Released under an MIT licence, no warranty implied or given, use at own risk etc etc.
This is a two axis stepper controller based on the ESP32 and TMC2130 stepper drivers. It is intended to be used with drawing machines and plotters.
See https://github.com/MarkJB/TMC429_Daughterboard_for_ESP32_Plotter_Controller for the TMC429 (Hardware stepper driver contoller) daughter board for this board (plugs into the two stepper motor driver sockets and provides an extra axis and hardware acceleration control.
Firmware https://github.com/MarkJB/Grbl_Esp32 (This is a Fork of Grbl_Esp32, if its out of date, you probably only need the config file from this fork). Tested with standard and corexy kinematics and a solenoid/relay for the spindle.
First board revision A (aka 'Diamiond Chimp')
