MarlinFirmware-Configurations/config/examples/Prusa/MK3S-BigTreeTech-BTT002/README.md

# BigTreeTech BTT002/TMC2209 Config for Průša MK3S

## Requirements
- [Průša MK3S, MK3S+, or MK3 with MK3S/MK3S+ upgrade](https://www.prusa3d.com/original-prusa-i3-mk3/) is required for filament runout to work properly.
- BigTreeTech BTT002 motherboard
- 4 x BigTreeTech TMC2209s (DIAG pin location differs from Watterott's & similar designs)

## Configuration Options

Flags specific to this printer/configuration:

- `MK3_FAN_PINS` - Disable this for `FAN0_PIN PB9` and `FAN1_PIN PB8`
- `GEARBOX_BEAR` - Is printer equipped with a 3.5:1 gearbox on the extruder?
- `TALLBEAR` - Tall Bear (320mm)?
- `SUPERPINDA` - SuperPinda present?

## Upgrade Notes
> [!IMPORTANT]
> * Cut or desolder the Z & E driver DIAG pins or they will interfere with PINDA & filament runout detection.
> * Set the jumpers under your drivers to "TMC2208-UART MODE":
>
>   <img src="https://user-images.githubusercontent.com/13375512/74117621-24415000-4b6d-11ea-8811-f867e187ea0c.png" width="50%">

## Changes to Start G-code
> [!IMPORTANT]
> The `W` in Průša's `G28 W ; home all without mesh bed level` default G-code does not exist in Marlin and [`G80 ; mesh bed leveling`](https://marlinfw.org/docs/gcode/G080.html) cancels the current motion mode, so no bed leveling will take place.

Below are some example start G-code scripts from popular slicers to get you started.

### PrusaSlicer
- Set your G-code flavor to "Marlin 2" under "Printer Settings" -> "General" -> "Firmware" -> "G-code flavor".
- Use the "Custom G-code" section under "Filament Settings" to add the [Linear Advance](https://marlinfw.org/docs/features/lin_advance.html) (`M900 K0.0`) value since it can be saved on a per-filament basis.
- Paste the start G-code block below in the "Custom G-code" section under "Printer Settings".

```gcode
G90 ; use absolute coordinates
M83 ; extruder relative mode
M104 S170 ; preheat hotend to 170
M140 S[first_layer_bed_temperature] ; set bed temp
M190 S[first_layer_bed_temperature] ; wait for bed temp
G28 ; home all
G29 ; mesh bed leveling
G1 X0 Z0.6 Y-3.0 F1000.0 ; go outside print area for intro line
M104 S[first_layer_temperature] ; set hotend temp
M109 S[first_layer_temperature] ; wait for hotend temp
G92 E0.0
G1 X60.0 E9.0 F1000.0 ; intro line
G1 X100.0 E12.5 F1000.0 ; intro line
G92 E0.0
```

### Cura
Paste the start G-code block below in the "Start G-code" section. Add your [Linear Advance](https://marlinfw.org/docs/features/lin_advance.html) (`M900 K0.0`) value in the start G-code block below:
```gcode
G90 ; use absolute coordinates
M83 ; extruder relative mode
M900 K0.0 ; place your linear advance value here
M104 S170 ; preheat hotend to 170
M140 S{material_bed_temperature_layer_0} ; set bed temp
M190 S{material_bed_temperature_layer_0} ; wait for bed temp
G28 ; home all
G29 ; mesh bed leveling
G1 X0 Z0.6 Y-3.0 F1000.0 ; go outside print area for intro line
M104 S{material_print_temperature_layer_0} ; set hotend temp
M109 S{material_print_temperature_layer_0} ; wait for hotend temp
G92 E0.0
G1 X60.0 E9.0 F1000.0 ; intro line
G1 X100.0 E12.5 F1000.0 ; intro line
G92 E0.0
```

### IdeaMaker
Paste the start G-code block below in the filament's "Start G-code" section. Add your [Linear Advance](https://marlinfw.org/docs/features/lin_advance.html) (`M900 K0.0`) value in the start G-code block below:
```gcode
G90 ; use absolute coordinates
M83 ; extruder relative mode
M900 K0.0 ; place your linear advance value here
M104 S170 ; preheat hotend to 170
M140 S{temperature_heatbed} ; set bed temp
M190 S{temperature_heatbed} ; wait for bed temp
G28 ; home all
G29 ; mesh bed leveling
G1 X0 Z0.6 Y-3.0 F1000.0 ; go outside print area for intro line
M104 S{temperature_extruder1} ; set hotend temp
M109 S{temperature_extruder1} ; wait for hotend temp
G92 E0.0
G1 X60.0 E9.0 F1000.0 ; intro line
G1 X100.0 E12.5 F1000.0 ; intro line
G92 E0.0
```

### Simplify3D
Paste the start G-code block below in the "Starting Script" section. Add your [Linear Advance](https://marlinfw.org/docs/features/lin_advance.html) (`M900 K0.0`) value in the start G-code block below:
```gcode
G90 ; use absolute coordinates
M83 ; extruder relative mode
M900 K0.0 ; place your linear advance value here
M104 S170 ; preheat hotend to 170
M140 S[bed0_temperature] ; set bed temp
M190 S[bed0_temperature] ; wait for bed temp
G28 ; home all
G29 ; mesh bed leveling
G1 X0 Z0.6 Y-3.0 F1000.0 ; go outside print area for intro line
M104 S[extruder0_temperature] T0 ; set hotend temp
M109 S[extruder0_temperature] T0 ; wait for hotend temp
G92 E0.0
G1 X60.0 E9.0 F1000.0 ; intro line
G1 X100.0 E12.5 F1000.0 ; intro line
G92 E0.0
```