Re: CNC3 RA will only drive one direction


Try not powering the Wemos from the external power.  unless you have fitted the diode you will need to power up the CNC first then plug in the USB. If you have a meter you could try measuring the 5v and 3.3v lines, i found  if ihad USB and wemos external power the 5v was down at about 4.4 and the 3.3v was down at about 2.6 volts.
I had a quick google and the tmc2208 although can be a drop in replacement it can also be UART controlled ( stored in internal eprom) and that depends on what version you buy, and presumably also how you previously used them.
Do you have any non TMC drivers to try.

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