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