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Code Issues Releases Wiki Activity

[1.1.x] LIN_ADVANCE v1.5 (#9700)

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Sebastianv650 2018-02-23 07:53:41 +01:00 • committed by Scott Lahteine
parent e41b2274b0
commit 9c65890644
45 changed files with 774 additions and 1429 deletions
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6
Marlin/Conditionals_LCD.h
View file

@ -389,7 +389,6 @@
* HOTENDS - Number of hotends, whether connected or separate
* E_STEPPERS - Number of actual E stepper motors
* E_MANUAL - Number of E steppers for LCD move options
* TOOL_E_INDEX - Index to use when getting/setting the tool state
*
*/
#if ENABLED(SINGLENOZZLE) || ENABLED(MIXING_EXTRUDER) // One hotend, one thermistor, no XY offset
@ -408,24 +407,19 @@
#if EXTRUDERS > 4
#define E_STEPPERS 3
#define E_MANUAL 3
#define TOOL_E_INDEX current_block->active_extruder
#elif EXTRUDERS > 2
#define E_STEPPERS 2
#define E_MANUAL 2
#define TOOL_E_INDEX current_block->active_extruder
#else
#define E_STEPPERS 1
#define TOOL_E_INDEX 0
#endif
#define E_MANUAL E_STEPPERS
#elif ENABLED(MIXING_EXTRUDER)
#define E_STEPPERS MIXING_STEPPERS
#define E_MANUAL 1
#define TOOL_E_INDEX 0
#else
#define E_STEPPERS EXTRUDERS
#define E_MANUAL EXTRUDERS
#define TOOL_E_INDEX current_block->active_extruder
#endif
/**

46
Marlin/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

21
Marlin/Marlin_main.cpp
View file

@ -10458,33 +10458,18 @@ inline void gcode_M502() {
#if ENABLED(LIN_ADVANCE)
/**
* M900: Set and/or Get advance K factor and WH/D ratio
* M900: Set and/or Get advance K factor
*
* K<factor> Set advance K factor
* R<ratio> Set ratio directly (overrides WH/D)
* W<width> H<height> D<diam> Set ratio from WH/D
*/
inline void gcode_M900() {
stepper.synchronize();
const float newK = parser.floatval('K', -1);
if (newK >= 0) planner.extruder_advance_k = newK;
float newR = parser.floatval('R', -1);
if (newR < 0) {
const float newD = parser.floatval('D', -1),
newW = parser.floatval('W', -1),
newH = parser.floatval('H', -1);
if (newD >= 0 && newW >= 0 && newH >= 0)
newR = newD ? (newW * newH) / (sq(newD * 0.5) * M_PI) : 0;
}
if (newR >= 0) planner.advance_ed_ratio = newR;
if (newK >= 0) planner.extruder_advance_K = newK;
SERIAL_ECHO_START();
SERIAL_ECHOPAIR("Advance K=", planner.extruder_advance_k);
SERIAL_ECHOPGM(" E/D=");
const float ratio = planner.advance_ed_ratio;
if (ratio) SERIAL_ECHO(ratio); else SERIAL_ECHOPGM("Auto");
SERIAL_ECHOPAIR("Advance K=", planner.extruder_advance_K);
SERIAL_EOL();
}
#endif // LIN_ADVANCE

6
Marlin/SanityCheck.h
View file

@ -223,6 +223,8 @@
#error "MIN_RETRACT is now MIN_AUTORETRACT and MAX_AUTORETRACT. Please update your Configuration_adv.h."
#elif defined(ADVANCE)
#error "ADVANCE was removed in Marlin 1.1.6. Please use LIN_ADVANCE."
#elif defined(LIN_ADVANCE_E_D_RATIO)
#error "LIN_ADVANCE (1.5) no longer uses LIN_ADVANCE_E_D_RATIO. Check your configuration."
#elif defined(NEOPIXEL_RGBW_LED)
#error "NEOPIXEL_RGBW_LED is now NEOPIXEL_LED. Please update your configuration."
#elif defined(UBL_MESH_INSET)
@ -525,10 +527,6 @@ static_assert(X_MAX_LENGTH >= X_BED_SIZE && Y_MAX_LENGTH >= Y_BED_SIZE,
#endif
#endif
#if ENABLED(LIN_ADVANCE) && !IS_CARTESIAN
#error "Sorry! LIN_ADVANCE is only compatible with Cartesian."
#endif
/**
* Parking Extruder requirements
*/

23
Marlin/configuration_store.cpp
View file

@ -37,7 +37,7 @@
*/
// Change EEPROM version if the structure changes
#define EEPROM_VERSION "V51"
#define EEPROM_VERSION "V52"
#define EEPROM_OFFSET 100
// Check the integrity of data offsets.
@ -221,8 +221,7 @@ typedef struct SettingsDataStruct {
//
// LIN_ADVANCE
//
float planner_extruder_advance_k, // M900 K planner.extruder_advance_k
planner_advance_ed_ratio; // M900 WHD planner.advance_ed_ratio
float planner_extruder_advance_K; // M900 K planner.extruder_advance_K
//
// HAS_MOTOR_CURRENT_PWM
@ -767,15 +766,13 @@ void MarlinSettings::postprocess() {
// Linear Advance
//
_FIELD_TEST(planner_extruder_advance_k);
_FIELD_TEST(planner_extruder_advance_K);
#if ENABLED(LIN_ADVANCE)
EEPROM_WRITE(planner.extruder_advance_k);
EEPROM_WRITE(planner.advance_ed_ratio);
EEPROM_WRITE(planner.extruder_advance_K);
#else
dummy = 0.0f;
EEPROM_WRITE(dummy);
EEPROM_WRITE(dummy);
#endif
_FIELD_TEST(motor_current_setting);
@ -1305,14 +1302,12 @@ void MarlinSettings::postprocess() {
// Linear Advance
//
_FIELD_TEST(planner_extruder_advance_k);
_FIELD_TEST(planner_extruder_advance_K);
#if ENABLED(LIN_ADVANCE)
EEPROM_READ(planner.extruder_advance_k);
EEPROM_READ(planner.advance_ed_ratio);
EEPROM_READ(planner.extruder_advance_K);
#else
EEPROM_READ(dummy);
EEPROM_READ(dummy);
#endif
//
@ -1793,8 +1788,7 @@ void MarlinSettings::reset() {
#endif
#if ENABLED(LIN_ADVANCE)
planner.extruder_advance_k = LIN_ADVANCE_K;
planner.advance_ed_ratio = LIN_ADVANCE_E_D_RATIO;
planner.extruder_advance_K = LIN_ADVANCE_K;
#endif
#if HAS_MOTOR_CURRENT_PWM
@ -2364,8 +2358,7 @@ void MarlinSettings::reset() {
SERIAL_ECHOLNPGM("Linear Advance:");
}
CONFIG_ECHO_START;
SERIAL_ECHOPAIR(" M900 K", planner.extruder_advance_k);
SERIAL_ECHOLNPAIR(" R", planner.advance_ed_ratio);
SERIAL_ECHOLNPAIR(" M900 K", planner.extruder_advance_K);
#endif
#if HAS_MOTOR_CURRENT_PWM

46
Marlin/example_configurations/AlephObjects/TAZ4/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Anet/A6/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Anet/A8/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/BIBO/TouchX/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/BQ/Hephestos/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/BQ/Hephestos_2/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/BQ/WITBOX/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Cartesio/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Creality/CR-10/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Creality/CR-10S/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Creality/Ender/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Felix/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/FolgerTech/i3-2020/Configuration_adv.h
View file

@ -710,43 +710,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Infitary/i3-M508/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/JGAurora/A5/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Malyan/M150/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Micromake/C1/enhanced/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/RigidBot/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/SCARA/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Sanguinololu/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/TinyBoy2/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Velleman/K8200/Configuration_adv.h
View file

@ -724,43 +724,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 140 // start value for PLA on K8200
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Velleman/K8400/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/Wanhao/Duplicator 6/Configuration_adv.h
View file

@ -713,43 +713,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 0
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration_adv.h
View file

@ -713,43 +713,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/delta/FLSUN/kossel/Configuration_adv.h
View file

@ -713,43 +713,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration_adv.h
View file

@ -713,43 +713,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/delta/generic/Configuration_adv.h
View file

@ -713,43 +713,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
View file

@ -713,43 +713,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
View file

@ -718,43 +718,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
View file

@ -713,43 +713,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/gCreate/gMax1.5+/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/makibox/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
View file

@ -711,43 +711,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

46
Marlin/example_configurations/wt150/Configuration_adv.h
View file

@ -712,43 +712,25 @@
// @section extruder
/**
* Implementation of linear pressure control
* Linear Pressure Control v1.5
*
* Assumption: advance = k * (delta velocity)
* Assumption: advance [steps] = k * (delta velocity [steps/s])
* K=0 means advance disabled.
* See Marlin documentation for calibration instructions.
*
* NOTE: K values for LIN_ADVANCE 1.5 differ from earlier versions!
*
* Set K around 0.22 for 3mm PLA Direct Drive with ~6.5cm between the drive gear and heatbreak.
* Larger K values will be needed for flexible filament and greater distances.
* If this algorithm produces a higher speed offset than the extruder can handle (compared to E jerk)
* print acceleration will be reduced during the affected moves to keep within the limit.
*
* See http://marlinfw.org/docs/features/lin_advance.html for full instructions.
* Mention @Sebastianv650 on GitHub to alert the author of any issues.
*/
//#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
* Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Example: `M900 R0.0458` to set the ratio directly.
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Průša Control) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#define LIN_ADVANCE_K 0.22 // Unit: mm compression per 1mm/s extruder speed
//#define LA_DEBUG // If enabled, this will generate debug information output over USB.
#endif
// @section leveling

214
Marlin/planner.cpp
View file

@ -174,11 +174,8 @@ float Planner::previous_speed[NUM_AXIS],
#endif
#if ENABLED(LIN_ADVANCE)
float Planner::extruder_advance_k, // Initialized by settings.load()
Planner::advance_ed_ratio, // Initialized by settings.load()
Planner::position_float[XYZE], // Needed for accurate maths. Steps cannot be used!
Planner::lin_dist_xy,
Planner::lin_dist_e;
float Planner::extruder_advance_K, // Initialized by settings.load()
Planner::position_float[XYZE]; // Needed for accurate maths. Steps cannot be used!
#endif
#if ENABLED(ULTRA_LCD)
@ -353,6 +350,13 @@ void Planner::recalculate_trapezoids() {
// NOTE: Entry and exit factors always > 0 by all previous logic operations.
const float nomr = 1.0 / current->nominal_speed;
calculate_trapezoid_for_block(current, current->entry_speed * nomr, next->entry_speed * nomr);
#if ENABLED(LIN_ADVANCE)
if (current->use_advance_lead) {
const float comp = current->e_D_ratio * extruder_advance_K * axis_steps_per_mm[E_AXIS];
current->max_adv_steps = current->nominal_speed * comp;
current->final_adv_steps = next->entry_speed * comp;
}
#endif
CBI(current->flag, BLOCK_BIT_RECALCULATE); // Reset current only to ensure next trapezoid is computed
}
}
@ -362,6 +366,13 @@ void Planner::recalculate_trapezoids() {
if (next) {
const float nomr = 1.0 / next->nominal_speed;
calculate_trapezoid_for_block(next, next->entry_speed * nomr, (MINIMUM_PLANNER_SPEED) * nomr);
#if ENABLED(LIN_ADVANCE)
if (next->use_advance_lead) {
const float comp = next->e_D_ratio * extruder_advance_K * axis_steps_per_mm[E_AXIS];
next->max_adv_steps = next->nominal_speed * comp;
next->final_adv_steps = (MINIMUM_PLANNER_SPEED) * comp;
}
#endif
CBI(next->flag, BLOCK_BIT_RECALCULATE);
}
}
@ -719,7 +730,12 @@ void Planner::check_axes_activity() {
* fr_mm_s - (target) speed of the move
* extruder - target extruder
*/
void Planner::_buffer_steps(const int32_t (&target)[ABCE], float fr_mm_s, const uint8_t extruder, const float &millimeters/*=0.0*/) {
void Planner::_buffer_steps(const int32_t (&target)[XYZE]
#if ENABLED(LIN_ADVANCE)
, const float (&target_float)[XYZE]
#endif
, float fr_mm_s, const uint8_t extruder, const float &millimeters/*=0.0*/
) {
const int32_t da = target[A_AXIS] - position[A_AXIS],
db = target[B_AXIS] - position[B_AXIS],
@ -740,13 +756,14 @@ void Planner::_buffer_steps(const int32_t (&target)[ABCE], float fr_mm_s, const
SERIAL_ECHOLNPGM(" steps)");
//*/
// If LIN_ADVANCE is disabled then do E move prevention with integers
// Otherwise it's done in _buffer_segment.
#if DISABLED(LIN_ADVANCE) && (ENABLED(PREVENT_COLD_EXTRUSION) || ENABLED(PREVENT_LENGTHY_EXTRUDE))
#if ENABLED(PREVENT_COLD_EXTRUSION) || ENABLED(PREVENT_LENGTHY_EXTRUDE)
if (de) {
#if ENABLED(PREVENT_COLD_EXTRUSION)
if (thermalManager.tooColdToExtrude(extruder)) {
position[E_AXIS] = target[E_AXIS]; // Behave as if the move really took place, but ignore E part
#if ENABLED(LIN_ADVANCE)
position_float[E_AXIS] = target_float[E_AXIS];
#endif
de = 0; // no difference
SERIAL_ECHO_START();
SERIAL_ECHOLNPGM(MSG_ERR_COLD_EXTRUDE_STOP);
@ -755,13 +772,16 @@ void Planner::_buffer_steps(const int32_t (&target)[ABCE], float fr_mm_s, const
#if ENABLED(PREVENT_LENGTHY_EXTRUDE)
if (labs(de * e_factor[extruder]) > (int32_t)axis_steps_per_mm[E_AXIS_N] * (EXTRUDE_MAXLENGTH)) { // It's not important to get max. extrusion length in a precision < 1mm, so save some cycles and cast to int
position[E_AXIS] = target[E_AXIS]; // Behave as if the move really took place, but ignore E part
#if ENABLED(LIN_ADVANCE)
position_float[E_AXIS] = target_float[E_AXIS];
#endif
de = 0; // no difference
SERIAL_ECHO_START();
SERIAL_ECHOLNPGM(MSG_ERR_LONG_EXTRUDE_STOP);
}
#endif // PREVENT_LENGTHY_EXTRUDE
}
#endif // !LIN_ADVANCE && (PREVENT_COLD_EXTRUSION || PREVENT_LENGTHY_EXTRUDE)
#endif // PREVENT_COLD_EXTRUSION || PREVENT_LENGTHY_EXTRUDE
// Compute direction bit-mask for this block
uint8_t dm = 0;
@ -1177,6 +1197,9 @@ void Planner::_buffer_steps(const int32_t (&target)[ABCE], float fr_mm_s, const
if (!block->steps[A_AXIS] && !block->steps[B_AXIS] && !block->steps[C_AXIS]) {
// convert to: acceleration steps/sec^2
accel = CEIL(retract_acceleration * steps_per_mm);
#if ENABLED(LIN_ADVANCE)
block->use_advance_lead = false;
#endif
}
else {
#define LIMIT_ACCEL_LONG(AXIS,INDX) do{ \
@ -1196,6 +1219,47 @@ void Planner::_buffer_steps(const int32_t (&target)[ABCE], float fr_mm_s, const
// Start with print or travel acceleration
accel = CEIL((esteps ? acceleration : travel_acceleration) * steps_per_mm);
#if ENABLED(LIN_ADVANCE)
/**
*
* Use LIN_ADVANCE for blocks if all these are true:
*
* esteps : This is a print move, because we checked for A, B, C steps before.
*
* extruder_advance_K : There is an advance factor set.
*
* de > 0 : Extruder is running forward (e.g., for "Wipe while retracting" (Slic3r) or "Combing" (Cura) moves)
*/
block->use_advance_lead = esteps
&& extruder_advance_K
&& de > 0;
if (block->use_advance_lead) {
block->e_D_ratio = (target_float[E_AXIS] - position_float[E_AXIS]) /
#if IS_KINEMATIC
block->millimeters
#else
SQRT(sq(target_float[X_AXIS] - position_float[X_AXIS])
+ sq(target_float[Y_AXIS] - position_float[Y_AXIS])
+ sq(target_float[Z_AXIS] - position_float[Z_AXIS]))
#endif
;
// Check for unusual high e_D ratio to detect if a retract move was combined with the last print move due to min. steps per segment. Never execute this with advance!
// This assumes no one will use a retract length of 0mm < retr_length < ~0.2mm and no one will print 100mm wide lines using 3mm filament or 35mm wide lines using 1.75mm filament.
if (block->e_D_ratio > 3.0)
block->use_advance_lead = false;
else {
const uint32_t max_accel_steps_per_s2 = max_jerk[E_AXIS] / (extruder_advance_K * block->e_D_ratio) * steps_per_mm;
#if ENABLED(LA_DEBUG)
if (accel > max_accel_steps_per_s2)
SERIAL_ECHOLNPGM("Acceleration limited.");
#endif
NOMORE(accel, max_accel_steps_per_s2);
}
}
#endif
#if ENABLED(DISTINCT_E_FACTORS)
#define ACCEL_IDX extruder
#else
@ -1219,6 +1283,17 @@ void Planner::_buffer_steps(const int32_t (&target)[ABCE], float fr_mm_s, const
block->acceleration_steps_per_s2 = accel;
block->acceleration = accel / steps_per_mm;
block->acceleration_rate = (long)(accel * 16777216.0 / ((F_CPU) * 0.125)); // * 8.388608
#if ENABLED(LIN_ADVANCE)
if (block->use_advance_lead) {
block->advance_speed = ((F_CPU) * 0.125) / (extruder_advance_K * block->e_D_ratio * block->acceleration * axis_steps_per_mm[E_AXIS]);
#if ENABLED(LA_DEBUG)
if (extruder_advance_K * block->e_D_ratio * block->acceleration * 2 < block->nominal_speed * block->e_D_ratio)
SERIAL_ECHOLNPGM("More than 2 steps per eISR loop executed.");
if (block->advance_speed < 200)
SERIAL_ECHOLNPGM("eISR running at > 10kHz.");
#endif
}
#endif
// Initial limit on the segment entry velocity
float vmax_junction;
@ -1374,41 +1449,15 @@ void Planner::_buffer_steps(const int32_t (&target)[ABCE], float fr_mm_s, const
previous_nominal_speed = block->nominal_speed;
previous_safe_speed = safe_speed;
#if ENABLED(LIN_ADVANCE)
/**
*
* Use LIN_ADVANCE for blocks if all these are true:
*
* esteps && (block->steps[X_AXIS] || block->steps[Y_AXIS]) : This is a print move
*
* extruder_advance_k : There is an advance factor set.
*
* esteps != block->step_event_count : A problem occurs if the move before a retract is too small.
* In that case, the retract and move will be executed together.
* This leads to too many advance steps due to a huge e_acceleration.
* The math is good, but we must avoid retract moves with advance!
* lin_dist_e > 0 : Extruder is running forward (e.g., for "Wipe while retracting" (Slic3r) or "Combing" (Cura) moves)
*/
block->use_advance_lead = esteps && (block->steps[X_AXIS] || block->steps[Y_AXIS])
&& extruder_advance_k
&& (uint32_t)esteps != block->step_event_count
&& lin_dist_e > 0;
if (block->use_advance_lead)
block->abs_adv_steps_multiplier8 = LROUND(
extruder_advance_k
* (UNEAR_ZERO(advance_ed_ratio) ? lin_dist_e / lin_dist_xy : advance_ed_ratio) // Use the fixed ratio, if set
* (block->nominal_speed / (float)block->nominal_rate)
* axis_steps_per_mm[E_AXIS_N] * 256.0
);
#endif // LIN_ADVANCE
// Move buffer head
block_buffer_head = next_buffer_head;
// Update the position (only when a move was queued)
static_assert(COUNT(target) > 1, "Parameter to _buffer_steps must be (&target)[XYZE]!");
COPY(position, target);
#if ENABLED(LIN_ADVANCE)
COPY(position_float, target_float);
#endif
recalculate();
@ -1444,6 +1493,10 @@ void Planner::buffer_segment(const float &a, const float &b, const float &c, con
LROUND(e * axis_steps_per_mm[E_AXIS_N])
};
#if ENABLED(LIN_ADVANCE)
const float target_float[XYZE] = { a, b, c, e };
#endif
// DRYRUN prevents E moves from taking place
if (DEBUGGING(DRYRUN)) {
position[E_AXIS] = target[E_AXIS];
@ -1452,40 +1505,6 @@ void Planner::buffer_segment(const float &a, const float &b, const float &c, con
#endif
}
#if ENABLED(LIN_ADVANCE)
lin_dist_e = e - position_float[E_AXIS];
#endif
// If LIN_ADVANCE is enabled then do E move prevention with floats
// Otherwise it's done in _buffer_steps.
#if ENABLED(LIN_ADVANCE) && (ENABLED(PREVENT_COLD_EXTRUSION) || ENABLED(PREVENT_LENGTHY_EXTRUDE))
if (lin_dist_e) {
#if ENABLED(PREVENT_COLD_EXTRUSION)
if (thermalManager.tooColdToExtrude(extruder)) {
position_float[E_AXIS] = e; // Behave as if the move really took place, but ignore E part
position[E_AXIS] = target[E_AXIS];
lin_dist_e = 0;
SERIAL_ECHO_START();
SERIAL_ECHOLNPGM(MSG_ERR_COLD_EXTRUDE_STOP);
}
#endif // PREVENT_COLD_EXTRUSION
#if ENABLED(PREVENT_LENGTHY_EXTRUDE)
if (lin_dist_e * e_factor[extruder] > (EXTRUDE_MAXLENGTH)) {
position_float[E_AXIS] = e; // Behave as if the move really took place, but ignore E part
position[E_AXIS] = target[E_AXIS];
lin_dist_e = 0;
SERIAL_ECHO_START();
SERIAL_ECHOLNPGM(MSG_ERR_LONG_EXTRUDE_STOP);
}
#endif // PREVENT_LENGTHY_EXTRUDE
}
#endif // LIN_ADVANCE && (PREVENT_COLD_EXTRUSION || PREVENT_LENGTHY_EXTRUDE)
#if ENABLED(LIN_ADVANCE)
if (lin_dist_e > 0)
lin_dist_xy = HYPOT(a - position_float[X_AXIS], b - position_float[Y_AXIS]);
#endif
/* <-- add a slash to enable
SERIAL_ECHOPAIR(" buffer_segment FR:", fr_mm_s);
#if IS_KINEMATIC
@ -1519,38 +1538,43 @@ void Planner::buffer_segment(const float &a, const float &b, const float &c, con
#define _BETWEEN(A) (position[A##_AXIS] + target[A##_AXIS]) >> 1
const int32_t between[ABCE] = { _BETWEEN(A), _BETWEEN(B), _BETWEEN(C), _BETWEEN(E) };
#if ENABLED(LIN_ADVANCE)
#define _BETWEEN_F(A) (position_float[A##_AXIS] + target_float[A##_AXIS]) * 0.5
const float between_float[ABCE] = { _BETWEEN_F(A), _BETWEEN_F(B), _BETWEEN_F(C), _BETWEEN_F(E) };
#endif
DISABLE_STEPPER_DRIVER_INTERRUPT();
#if ENABLED(LIN_ADVANCE)
lin_dist_xy *= 0.5;
lin_dist_e *= 0.5;
#endif
_buffer_steps(between, fr_mm_s, extruder, millimeters * 0.5);
#if ENABLED(LIN_ADVANCE)
position_float[X_AXIS] = (position_float[X_AXIS] + a) * 0.5;
position_float[Y_AXIS] = (position_float[Y_AXIS] + b) * 0.5;
//position_float[Z_AXIS] = (position_float[Z_AXIS] + c) * 0.5;
position_float[E_AXIS] = (position_float[E_AXIS] + e) * 0.5;
#endif
_buffer_steps(between
#if ENABLED(LIN_ADVANCE)
, between_float
#endif
, fr_mm_s, extruder, millimeters * 0.5
);
const uint8_t next = block_buffer_head;
_buffer_steps(target, fr_mm_s, extruder, millimeters * 0.5);
_buffer_steps(target
#if ENABLED(LIN_ADVANCE)
, target_float
#endif
, fr_mm_s, extruder, millimeters * 0.5
);
SBI(block_buffer[next].flag, BLOCK_BIT_CONTINUED);
ENABLE_STEPPER_DRIVER_INTERRUPT();
}
else
_buffer_steps(target, fr_mm_s, extruder, millimeters);
_buffer_steps(target
#if ENABLED(LIN_ADVANCE)
, target_float
#endif
, fr_mm_s, extruder, millimeters
);
stepper.wake_up();
#if ENABLED(LIN_ADVANCE)
position_float[X_AXIS] = a;
position_float[Y_AXIS] = b;
//position_float[Z_AXIS] = c;
position_float[E_AXIS] = e;
#endif
} // buffer_segment()
/**
@ -1574,7 +1598,7 @@ void Planner::_set_position_mm(const float &a, const float &b, const float &c, c
#if ENABLED(LIN_ADVANCE)
position_float[X_AXIS] = a;
position_float[Y_AXIS] = b;
//position_float[Z_AXIS] = c;
position_float[Z_AXIS] = c;
position_float[E_AXIS] = e;
#endif
stepper.set_position(na, nb, nc, ne);

19
Marlin/planner.h
View file

@ -99,7 +99,10 @@ typedef struct {
// Advance extrusion
#if ENABLED(LIN_ADVANCE)
bool use_advance_lead;
uint32_t abs_adv_steps_multiplier8; // Factorised by 2^8 to avoid float
uint16_t advance_speed, // Timer value for extruder speed offset
max_adv_steps, // max. advance steps to get cruising speed pressure (not always nominal_speed!)
final_adv_steps; // advance steps due to exit speed
float e_D_ratio;
#endif
// Fields used by the motion planner to manage acceleration
@ -191,9 +194,8 @@ class Planner {
#endif
#if ENABLED(LIN_ADVANCE)
static float extruder_advance_k, advance_ed_ratio,
position_float[XYZE],
lin_dist_xy, lin_dist_e;
static float extruder_advance_K,
position_float[XYZE];
#endif
#if ENABLED(SKEW_CORRECTION)
@ -414,7 +416,12 @@ class Planner {
* extruder - target extruder
* millimeters - the length of the movement, if known
*/
static void _buffer_steps(const int32_t (&target)[XYZE], float fr_mm_s, const uint8_t extruder, const float &millimeters=0.0);
static void _buffer_steps(const int32_t (&target)[XYZE]
#if ENABLED(LIN_ADVANCE)
, const float (&target_float)[XYZE]
#endif
, float fr_mm_s, const uint8_t extruder, const float &millimeters=0.0
);
/**
* Planner::buffer_segment
@ -537,7 +544,7 @@ class Planner {
// If the block has no trapezoid calculated, it's unsafe to execute.
if (movesplanned() > 1) {
block_t* next = &block_buffer[next_block_index(block_buffer_tail)];
const block_t * const next = &block_buffer[next_block_index(block_buffer_tail)];
if (TEST(block->flag, BLOCK_BIT_RECALCULATE) || TEST(next->flag, BLOCK_BIT_RECALCULATE))
return NULL;
}

208
Marlin/stepper.cpp
View file

@ -100,31 +100,21 @@ volatile uint32_t Stepper::step_events_completed = 0; // The number of step even
#if ENABLED(LIN_ADVANCE)
uint32_t Stepper::LA_decelerate_after;
constexpr uint16_t ADV_NEVER = 65535;
uint16_t Stepper::nextMainISR = 0,
Stepper::nextAdvanceISR = ADV_NEVER,
Stepper::eISR_Rate = ADV_NEVER;
Stepper::eISR_Rate = ADV_NEVER,
Stepper::current_adv_steps = 0,
Stepper::final_adv_steps,
Stepper::max_adv_steps;
volatile int Stepper::e_steps[E_STEPPERS];
int Stepper::final_estep_rate,
Stepper::current_estep_rate[E_STEPPERS],
Stepper::current_adv_steps[E_STEPPERS];
int8_t Stepper::e_steps = 0,
Stepper::LA_active_extruder; // Copy from current executed block. Needed because current_block is set to NULL "too early".
/**
* See https://github.com/MarlinFirmware/Marlin/issues/5699#issuecomment-309264382
*
* This fix isn't perfect and may lose steps - but better than locking up completely
* in future the planner should slow down if advance stepping rate would be too high
*/
FORCE_INLINE uint16_t adv_rate(const int steps, const uint16_t timer, const uint8_t loops) {
if (steps) {
const uint16_t rate = (timer * loops) / abs(steps);
//return constrain(rate, 1, ADV_NEVER - 1)
return rate ? rate : 1;
}
return ADV_NEVER;
}
bool Stepper::use_advance_lead;
#endif // LIN_ADVANCE
@ -500,7 +490,7 @@ void Stepper::isr() {
#if DISABLED(MIXING_EXTRUDER)
// Don't step E here for mixing extruder
count_position[E_AXIS] += count_direction[E_AXIS];
motor_direction(E_AXIS) ? --e_steps[TOOL_E_INDEX] : ++e_steps[TOOL_E_INDEX];
motor_direction(E_AXIS) ? --e_steps : ++e_steps;
#endif
}
@ -679,25 +669,6 @@ void Stepper::isr() {
} // steps_loop
#if ENABLED(LIN_ADVANCE)
if (current_block->use_advance_lead) {
const int delta_adv_steps = current_estep_rate[TOOL_E_INDEX] - current_adv_steps[TOOL_E_INDEX];
current_adv_steps[TOOL_E_INDEX] += delta_adv_steps;
#if ENABLED(MIXING_EXTRUDER)
// Mixing extruders apply advance lead proportionally
MIXING_STEPPERS_LOOP(j)
e_steps[j] += delta_adv_steps * current_block->step_event_count / current_block->mix_event_count[j];
#else
// For most extruders, advance the single E stepper
e_steps[TOOL_E_INDEX] += delta_adv_steps;
#endif
}
// If we have esteps to execute, fire the next advance_isr "now"
if (e_steps[TOOL_E_INDEX]) nextAdvanceISR = 0;
#endif // LIN_ADVANCE
// Calculate new timer value
if (step_events_completed <= (uint32_t)current_block->accelerate_until) {
@ -718,14 +689,15 @@ void Stepper::isr() {
#if ENABLED(LIN_ADVANCE)
if (current_block->use_advance_lead) {
#if ENABLED(MIXING_EXTRUDER)
MIXING_STEPPERS_LOOP(j)
current_estep_rate[j] = ((uint32_t)acc_step_rate * current_block->abs_adv_steps_multiplier8 * current_block->step_event_count / current_block->mix_event_count[j]) >> 17;
#else
current_estep_rate[TOOL_E_INDEX] = ((uint32_t)acc_step_rate * current_block->abs_adv_steps_multiplier8) >> 17;
#endif
if (step_events_completed == step_loops || (e_steps && eISR_Rate != current_block->advance_speed)) {
nextAdvanceISR = 0; // Wake up eISR on first acceleration loop and fire ISR if final adv_rate is reached
eISR_Rate = current_block->advance_speed;
}
}
else {
eISR_Rate = ADV_NEVER;
if (e_steps) nextAdvanceISR = 0;
}
eISR_Rate = adv_rate(e_steps[TOOL_E_INDEX], interval, step_loops);
#endif // LIN_ADVANCE
}
@ -751,14 +723,15 @@ void Stepper::isr() {
#if ENABLED(LIN_ADVANCE)
if (current_block->use_advance_lead) {
#if ENABLED(MIXING_EXTRUDER)
MIXING_STEPPERS_LOOP(j)
current_estep_rate[j] = ((uint32_t)step_rate * current_block->abs_adv_steps_multiplier8 * current_block->step_event_count / current_block->mix_event_count[j]) >> 17;
#else
current_estep_rate[TOOL_E_INDEX] = ((uint32_t)step_rate * current_block->abs_adv_steps_multiplier8) >> 17;
#endif
if (step_events_completed <= (uint32_t)current_block->decelerate_after + step_loops || (e_steps && eISR_Rate != current_block->advance_speed)) {
nextAdvanceISR = 0; // Wake up eISR on first deceleration loop
eISR_Rate = current_block->advance_speed;
}
}
else {
eISR_Rate = ADV_NEVER;
if (e_steps) nextAdvanceISR = 0;
}
eISR_Rate = adv_rate(e_steps[TOOL_E_INDEX], interval, step_loops);
#endif // LIN_ADVANCE
}
@ -766,10 +739,8 @@ void Stepper::isr() {
#if ENABLED(LIN_ADVANCE)
if (current_block->use_advance_lead)
current_estep_rate[TOOL_E_INDEX] = final_estep_rate;
eISR_Rate = adv_rate(e_steps[TOOL_E_INDEX], OCR1A_nominal, step_loops_nominal);
// If we have esteps to execute, fire the next advance_isr "now"
if (e_steps && eISR_Rate != current_block->advance_speed) nextAdvanceISR = 0;
#endif
@ -808,55 +779,79 @@ void Stepper::isr() {
#if ENABLED(MK2_MULTIPLEXER)
// Even-numbered steppers are reversed
#define SET_E_STEP_DIR(INDEX) \
if (e_steps[INDEX]) E## INDEX ##_DIR_WRITE(e_steps[INDEX] < 0 ? !INVERT_E## INDEX ##_DIR ^ TEST(INDEX, 0) : INVERT_E## INDEX ##_DIR ^ TEST(INDEX, 0))
if (e_steps) E## INDEX ##_DIR_WRITE(e_steps < 0 ? !INVERT_E## INDEX ##_DIR ^ TEST(INDEX, 0) : INVERT_E## INDEX ##_DIR ^ TEST(INDEX, 0))
#else
#define SET_E_STEP_DIR(INDEX) \
if (e_steps[INDEX]) E## INDEX ##_DIR_WRITE(e_steps[INDEX] < 0 ? INVERT_E## INDEX ##_DIR : !INVERT_E## INDEX ##_DIR)
if (e_steps) E## INDEX ##_DIR_WRITE(e_steps < 0 ? INVERT_E## INDEX ##_DIR : !INVERT_E## INDEX ##_DIR)
#endif
#define START_E_PULSE(INDEX) \
if (e_steps[INDEX]) E## INDEX ##_STEP_WRITE(!INVERT_E_STEP_PIN)
if (e_steps) E## INDEX ##_STEP_WRITE(!INVERT_E_STEP_PIN)
#define STOP_E_PULSE(INDEX) \
if (e_steps[INDEX]) { \
e_steps[INDEX] < 0 ? ++e_steps[INDEX] : --e_steps[INDEX]; \
if (e_steps) { \
e_steps < 0 ? ++e_steps : --e_steps; \
E## INDEX ##_STEP_WRITE(INVERT_E_STEP_PIN); \
}
SET_E_STEP_DIR(0);
#if E_STEPPERS > 1
SET_E_STEP_DIR(1);
#if E_STEPPERS > 2
SET_E_STEP_DIR(2);
#if E_STEPPERS > 3
SET_E_STEP_DIR(3);
#if E_STEPPERS > 4
SET_E_STEP_DIR(4);
#endif
#endif
#endif
#endif
if (current_block->use_advance_lead) {
if (step_events_completed > LA_decelerate_after && current_adv_steps > final_adv_steps) {
e_steps--;
current_adv_steps--;
nextAdvanceISR = eISR_Rate;
}
else if (step_events_completed < LA_decelerate_after && current_adv_steps < max_adv_steps) {
//step_events_completed <= (uint32_t)current_block->accelerate_until) {
e_steps++;
current_adv_steps++;
nextAdvanceISR = eISR_Rate;
}
else {
nextAdvanceISR = ADV_NEVER;
eISR_Rate = ADV_NEVER;
}
}
else
nextAdvanceISR = ADV_NEVER;
// Step all E steppers that have steps
for (uint8_t i = step_loops; i--;) {
switch(LA_active_extruder) {
case 0: SET_E_STEP_DIR(0); break;
#if EXTRUDERS > 1
case 1: SET_E_STEP_DIR(1); break;
#if EXTRUDERS > 2
case 2: SET_E_STEP_DIR(2); break;
#if EXTRUDERS > 3
case 3: SET_E_STEP_DIR(3); break;
#if EXTRUDERS > 4
case 4: SET_E_STEP_DIR(4); break;
#endif // EXTRUDERS > 4
#endif // EXTRUDERS > 3
#endif // EXTRUDERS > 2
#endif // EXTRUDERS > 1
}
// Step E stepper if we have steps
while (e_steps) {
#if EXTRA_CYCLES_E > 20
uint32_t pulse_start = TCNT0;
#endif
START_E_PULSE(0);
#if E_STEPPERS > 1
START_E_PULSE(1);
#if E_STEPPERS > 2
START_E_PULSE(2);
#if E_STEPPERS > 3
START_E_PULSE(3);
#if E_STEPPERS > 4
START_E_PULSE(4);
#endif
#endif
#endif
#endif
switch(LA_active_extruder) {
case 0: START_E_PULSE(0); break;
#if EXTRUDERS > 1
case 1: START_E_PULSE(1); break;
#if EXTRUDERS > 2
case 2: START_E_PULSE(2); break;
#if EXTRUDERS > 3
case 3: START_E_PULSE(3); break;
#if EXTRUDERS > 4
case 4: START_E_PULSE(4); break;
#endif // EXTRUDERS > 4
#endif // EXTRUDERS > 3
#endif // EXTRUDERS > 2
#endif // EXTRUDERS > 1
}
// For minimum pulse time wait before stopping pulses
#if EXTRA_CYCLES_E > 20
@ -866,19 +861,21 @@ void Stepper::isr() {
DELAY_NOPS(EXTRA_CYCLES_E);
#endif
STOP_E_PULSE(0);
#if E_STEPPERS > 1
STOP_E_PULSE(1);
#if E_STEPPERS > 2
STOP_E_PULSE(2);
#if E_STEPPERS > 3
STOP_E_PULSE(3);
#if E_STEPPERS > 4
STOP_E_PULSE(4);
#endif
#endif
#endif
#endif
switch(LA_active_extruder) {
case 0: STOP_E_PULSE(0); break;
#if EXTRUDERS > 1
case 1: STOP_E_PULSE(1); break;
#if EXTRUDERS > 2
case 2: STOP_E_PULSE(2); break;
#if EXTRUDERS > 3
case 3: STOP_E_PULSE(3); break;
#if EXTRUDERS > 4
case 4: STOP_E_PULSE(4); break;
#endif // EXTRUDERS > 4
#endif // EXTRUDERS > 3
#endif // EXTRUDERS > 2
#endif // EXTRUDERS > 1
}
// For minimum pulse time wait before looping
#if EXTRA_CYCLES_E > 20
@ -1121,11 +1118,6 @@ void Stepper::init() {
TCNT1 = 0;
ENABLE_STEPPER_DRIVER_INTERRUPT();
#if ENABLED(LIN_ADVANCE)
for (uint8_t i = 0; i < COUNT(e_steps); i++) e_steps[i] = 0;
ZERO(current_adv_steps);
#endif
endstops.enable(true); // Start with endstops active. After homing they can be disabled
sei();

46
Marlin/stepper.h
View file

@ -123,14 +123,14 @@ class Stepper {
#if ENABLED(LIN_ADVANCE)
static uint16_t nextMainISR, nextAdvanceISR, eISR_Rate;
static uint32_t LA_decelerate_after; // Copy from current executed block. Needed because current_block is set to NULL "too early".
static uint16_t nextMainISR, nextAdvanceISR, eISR_Rate, current_adv_steps,
final_adv_steps, max_adv_steps; // Copy from current executed block. Needed because current_block is set to NULL "too early".
#define _NEXT_ISR(T) nextMainISR = T
static volatile int e_steps[E_STEPPERS];
static int final_estep_rate;
static int current_estep_rate[E_STEPPERS]; // Actual extruder speed [steps/s]
static int current_adv_steps[E_STEPPERS]; // The amount of current added esteps due to advance.
// i.e., the current amount of pressure applied
// to the spring (=filament).
static int8_t e_steps;
static int8_t LA_active_extruder; // Copy from current executed block. Needed because current_block is set to NULL "too early".
static bool use_advance_lead;
#else // !LIN_ADVANCE
#define _NEXT_ISR(T) OCR1A = T
@ -348,6 +348,22 @@ class Stepper {
static int8_t last_extruder = -1;
#if ENABLED(LIN_ADVANCE)
if (current_block->active_extruder != last_extruder) {
current_adv_steps = 0; // If the now active extruder wasn't in use during the last move, its pressure is most likely gone.
LA_active_extruder = current_block->active_extruder;
}
if (current_block->use_advance_lead) {
LA_decelerate_after = current_block->decelerate_after;
final_adv_steps = current_block->final_adv_steps;
max_adv_steps = current_block->max_adv_steps;
use_advance_lead = true;
}
else
use_advance_lead = false;
#endif
if (current_block->direction_bits != last_direction_bits || current_block->active_extruder != last_extruder) {
last_direction_bits = current_block->direction_bits;
last_extruder = current_block->active_extruder;
@ -363,22 +379,6 @@ class Stepper {
acceleration_time = calc_timer_interval(acc_step_rate);
_NEXT_ISR(acceleration_time);
#if ENABLED(LIN_ADVANCE)
if (current_block->use_advance_lead) {
current_estep_rate[current_block->active_extruder] = ((unsigned long)acc_step_rate * current_block->abs_adv_steps_multiplier8) >> 17;
final_estep_rate = (current_block->nominal_rate * current_block->abs_adv_steps_multiplier8) >> 17;
}
#endif
// SERIAL_ECHO_START();
// SERIAL_ECHOPGM("advance :");
// SERIAL_ECHO(current_block->advance/256.0);
// SERIAL_ECHOPGM("advance rate :");
// SERIAL_ECHO(current_block->advance_rate/256.0);
// SERIAL_ECHOPGM("initial advance :");
// SERIAL_ECHO(current_block->initial_advance/256.0);
// SERIAL_ECHOPGM("final advance :");
// SERIAL_ECHOLN(current_block->final_advance/256.0);
}
#if HAS_DIGIPOTSS || HAS_MOTOR_CURRENT_PWM

4
Marlin/ultralcd.cpp
View file

@ -3183,7 +3183,7 @@ void kill_screen(const char* lcd_msg) {
#if DISABLED(NO_VOLUMETRICS) || ENABLED(ADVANCED_PAUSE_FEATURE)
MENU_ITEM(submenu, MSG_FILAMENT, lcd_control_filament_menu);
#elif ENABLED(LIN_ADVANCE)
MENU_ITEM_EDIT(float3, MSG_ADVANCE_K, &planner.extruder_advance_k, 0, 999);
MENU_ITEM_EDIT(float32, MSG_ADVANCE_K, &planner.extruder_advance_K, 0, 999);
#endif
#if HAS_LCD_CONTRAST
@ -3696,7 +3696,7 @@ void kill_screen(const char* lcd_msg) {
MENU_BACK(MSG_CONTROL);
#if ENABLED(LIN_ADVANCE)
MENU_ITEM_EDIT(float3, MSG_ADVANCE_K, &planner.extruder_advance_k, 0, 999);
MENU_ITEM_EDIT(float32, MSG_ADVANCE_K, &planner.extruder_advance_K, 0, 999);
#endif
#if DISABLED(NO_VOLUMETRICS)