Can you please post pictures of the wiring between the 2 GRBL boards ? How long is the link ?geostein8888 a écrit : ↑07 déc. 2020 11:36 Hello,
received just a new stm module, programmed it with the hex file (115200bd), some problem. I still get the "??", and cant clear the error with the touchscreen buttons
Georg
See ya