Wiring for I2C Stepper - xpix/XHTC GitHub Wiki
BIG Wiring on Washers from Toolholder:
A --- B A (+24VCC): EMPTY
B (+12VCC): STP+
C C (GROUND): STP-
Small Wiring on pogo pins from Toolholder:
1 GROUND PWM- black thin wire
2 I2C_T red thin wire
3 I2C_D white or yellow thin wire
4 EMPTY
5 +5 VCC
Driver: https://www.ebay.de/itm/264149837828
Flash wemos driver https://hackaday.io/project/18439-motor-shield-reprogramming
Firmwarefor Stepper motors https://github.com/masutokw/WEMOS-motor-shield-for-stepper-UART/issues/2