Replace y-axis motor drive by aux-drive in software?

Software
3

I tested it. Works like a charm.
Here’s what I did in order to use the TMC2130 of the spare AUX drive to drive the Y-axis motor:

  1. downloaded the farmduino firmware
  2. defined the correct board in src/Board.h:
  // Farmbot Genesis 1.6
  #define FARMDUINO_V32
  #define K16
  1. swapped the pin assignments in src/pins.h in section “#if defined(FARMDUINO_V32)”:
  //#define Y_STEP_PIN 32
  #define Y_STEP_PIN 40
  //#define Y_DIR_PIN 33
  #define Y_DIR_PIN 41
  //#define Y_ENABLE_PIN 31
  #define Y_ENABLE_PIN 37  
  //#define Y_CHIP_SELECT 28  // Y_CHIP_SELECT
  #define Y_CHIP_SELECT 43  // Y_CHIP_SELECT

and

  //#define AUX_STEP_PIN 40
  #define AUX_STEP_PIN 32
  //#define AUX_DIR_PIN 41
  #define AUX_DIR_PIN 33
  //#define AUX_ENABLE_PIN 37
  #define AUX_ENABLE_PIN 31
  // #define AUX_CHIP_SELECT 43 // CHIP_SELECT is not used for the spare AUX motor
  1. compiled the sketch in the Arduino IDE using ‘Sketch–>Export Compiled Binary’
  2. copied the file \src\build\arduino.avr.mega\src.ino.hex to the FAT32-Boot-Partition of the Raspberry SD card and renamed it to custom.hex
  3. connected the Y-motor cable to the AUX connector
  4. booted the system

Whether this works for versions other than FARMDUINO_V32 I can’t say

Regards
Franz

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