You have some other problems. Twice there is the sequence: es after '''S''', expected 3 Done! Response while disconnected: The first line is probably part of an error message from the Duet, but Repetier has chopped off the first part. I've no idea about "Done!" but I think that's from Repetier, not the Duet. After that, Repetier seems to think it shouldn't be connected and is surprised to see a response.

and thank you who read this topic 400 people i hope you learn from this topic

Look at https://github.com/dc42/PanelDueFirmware/releases . It starts with "Choosing the correct firmware binary" .

@dc42 woah that's an awesome feature! Thanks

Glad it's working.

@darnz said in External Drivers for Nema 34 Steppers: Could I make use of expansion plug pins for my XY and Z? So useE2 for my X Use E3 for my Y And use E4 for my Z. Yes, use the M584 command in config.g to specify which drivers your axis motors use. Do you think I may have a problem with one pin feeding signal to upto4 drivers? You might be able to drive 4 drivers from one expansion breakout board output. Or you could use E4 and E5 to drive 2 Z drivers each.