DUET 3 - PID control pressure sensor to run motor?

CJ.BRAVO

Hey,
is it plausible to connect a pressure sensor to the duet 3 with a pid control to run a stepper motor?

cheers!

dc42

If it's the Z motor you want to control, then yes. See M951 and M594. Caution, this feature is experimental.

CJ.BRAVO

@dc42 said in DUET 3 - PID control pressure sensor to run motor?:

M951

I was actually looking to run an extruder.

dc42

@CJ-BRAVO said in DUET 3 - PID control pressure sensor to run motor?:

@dc42 said in DUET 3 - PID control pressure sensor to run motor?:

M951

I was actually looking to run an extruder.

That would require a modification to the M951/M594 code, to generalise to allow a different axis to be used. If the intention is to extrude with constant pressure, then a further modification would be needed to allow the PID controller to control motor speed instead of position.

CJ.BRAVO

@dc42 said in DUET 3 - PID control pressure sensor to run motor?:

I"f the intention is to extrude with constant pressure"
yes, that's the idea.

CJ.BRAVO

@dc42 said in DUET 3 - PID control pressure sensor to run motor?:

That would require a modification to the M951/M594 code,

so thats something in my range?