MarlinFirmware/Marlin/Configuration.h

#ifndef CONFIGURATION_H
#define CONFIGURATION_H

// BASIC SETTINGS: select your board type, thermistor type, axis scaling, and endstop configuration

//// The following define selects which electronics board you have. Please choose the one that matches your setup
// Gen6 = 5, 
#define MOTHERBOARD 5 

//// Thermistor settings:
// 1 is 100k thermistor
// 2 is 200k thermistor
// 3 is mendel-parts thermistor
#define THERMISTORHEATER 3


//// Calibration variables
// X, Y, Z, E steps per unit - Metric Mendel / Orca with V9 extruder:
float axis_steps_per_unit[] = {40, 40, 3333.92, 67}; 
// For E steps per unit = 67 for v9 with direct drive (needs finetuning) for other extruders this needs to be changed 
// Metric Prusa Mendel with Makergear geared stepper extruder:
//float axis_steps_per_unit[] = {80,80,3200/1.25,1380}; 

//// Endstop Settings
#define ENDSTOPPULLUPS // Comment this out (using // at the start of the line) to disable the endstop pullup resistors
// The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
const bool ENDSTOPS_INVERTING = false; // set to true to invert the logic of the endstops. 
// For optos H21LOB set to true, for Mendel-Parts newer optos TCST2103 set to false

// This determines the communication speed of the printer
#define BAUDRATE 250000

// Comment out (using // at the start of the line) to disable SD support:
//#define SDSUPPORT


//// ADVANCED SETTINGS - to tweak parameters

#include "thermistortables.h"

// For Inverting Stepper Enable Pins (Active Low) use 0, Non Inverting (Active High) use 1
#define X_ENABLE_ON 0
#define Y_ENABLE_ON 0
#define Z_ENABLE_ON 0
#define E_ENABLE_ON 0

// Disables axis when it's not being used.
#define DISABLE_X false
#define DISABLE_Y false
#define DISABLE_Z true
#define DISABLE_E false

// Inverting axis direction
#define INVERT_X_DIR true    // for Mendel set to false, for Orca set to true
#define INVERT_Y_DIR false   // for Mendel set to true, for Orca set to false
#define INVERT_Z_DIR true    // for Mendel set to false, for Orca set to true
#define INVERT_E_DIR true   // for direct drive extruder v9 set to true, for geared extruder set to false

//// ENDSTOP SETTINGS:
// Sets direction of endstops when homing; 1=MAX, -1=MIN
#define X_HOME_DIR -1
#define Y_HOME_DIR -1
#define Z_HOME_DIR -1

#define min_software_endstops false //If true, axis won't move to coordinates less than zero.
#define max_software_endstops true  //If true, axis won't move to coordinates greater than the defined lengths below.
#define X_MAX_LENGTH 200
#define Y_MAX_LENGTH 200
#define Z_MAX_LENGTH 100

//// MOVEMENT SETTINGS
#define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E
float max_feedrate[] = {60000, 60000, 100, 500000}; // set the max speeds
float homing_feedrate[] = {2400, 2400, 80, 0};  // set the homing speeds
bool axis_relative_modes[] = {false, false, false, false};

//// Acceleration settings
// X, Y, Z, E maximum start speed for accelerated moves. E default values are good for skeinforge 40+, for older versions raise them a lot.
float acceleration = 2000;         // Normal acceleration mm/s^2
float retract_acceleration = 7000; // Normal acceleration mm/s^2
float max_xy_jerk = 20.0*60;
float max_z_jerk = 0.4*60;
long max_acceleration_units_per_sq_second[] = {7000,7000,100,10000}; // X, Y, Z and E max acceleration in mm/s^2 for printing moves or retracts

// The watchdog waits for the watchperiod in milliseconds whenever an M104 or M109 increases the target temperature
// If the temperature has not increased at the end of that period, the target temperature is set to zero. It can be reset with another M104/M109
//#define WATCHPERIOD 5000 //5 seconds

//// The minimal temperature defines the temperature below which the heater will not be enabled
#define MINTEMP 5


// When temperature exceeds max temp, your heater will be switched off.
// This feature exists to protect your hotend from overheating accidentally, but *NOT* from thermistor short/failure!
// You should use MINTEMP for thermistor short/failure protection.
#define MAXTEMP 275


/// PID settings:
// Uncomment the following line to enable PID support.
//#define PIDTEMP
#ifdef PIDTEMP
//#define PID_DEBUG 1 // Sends debug data to the serial port. 
//#define PID_OPENLOOP 1 // Puts PID in open loop. M104 sets the output power in %
#define PID_MAX 156 // limits current to nozzle
#define PID_INTEGRAL_DRIVE_MAX 156.0
#define PID_dT 0.16
double Kp = 20.0;
double Ki = 1.5*PID_dT;
double Kd = 80/PID_dT;
#endif // PIDTEMP


// extruder advance constant (s2/mm3)
//
// advance (steps) = STEPS_PER_CUBIC_MM_E * EXTUDER_ADVANCE_K * cubic mm per second ^ 2
//
// hooke's law says:		force = k * distance
// bernoulli's priniciple says:	v ^ 2 / 2 + g . h + pressure / density = constant
// so: v ^ 2 is proportional to number of steps we advance the extruder
//#define ADVANCE

#ifdef ADVANCE
#define EXTRUDER_ADVANCE_K 0.02

#define D_FILAMENT 1.7
#define STEPS_MM_E 65
#define EXTRUTION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
#define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUTION_AREA)

#endif // ADVANCE

#endif