Probe Z-stop driver fallback
I just witnessed my probe failing (i think...not exactly sure what happened there) and the nozzle crashing while Z-homing - this got me thinking...:
Is it possible to use the TMC driver's feedback as a backup for a case such as this?
That's not currently supported, however you could reduce motor current during homing using M913.
@dc42 Thank you for that amazingly quick answer - awesome support
I think this would be a really nice future security feature, I don't feel comfortable messing with adjusting motor current on the fly, but will keep that suggestion in mind - thanks a lot!
@duetwifiuser It's really not a problem to alter current on the fly. I use it all the time in my homing files. Here's an example:
; Home XY ; M913 X30 Y30 ; set X Y motors to 30% of their normal current for homing G1 S1 X-375 Y305 F4000 ; course home X or Y G1 S1 X-375 F4000 ; course home X G1 S1 Y305 F4000 ; course home Y G1 X5 Y-5 F1000 ; move away from the endstops G1 S1 X-10 F600 ; fine home X G1 S1 Y10 F600 ; fine home Y M913 X85 Y85 ; set X Y motors to 85% of their normal max current