Duet 3 - Moves really slow?
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@Phaedrux said in Duet 3 - Moves really slow?:
@Martin1454 said in Duet 3 - Moves really slow?:
The stepper takes 1 step - like it moves to the left a tiny bit. (I think 1 full step, not microstep)
That sounds like stall detection has triggered prematurely. Does it show the axis as homed after it stops?
I guess I'm a bit confused, is it a case of movement being slower than requested or is it stalling before it should?
Have you gone through any of the stall detection tuning?
https://duet3d.dozuki.com/Wiki/Stall_detection_and_sensorless_homing
Thats what im trying to do - Im trying to setup the stall detection, but I never get it moving fast enough to try to tune it.
But Maybe I should try to add in a comment it post when it triggers, and see if it triggers prematurely and that is why it vibrates/stalls in the begining.
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Can you test movement with M915 commented out?
Send G92 X100 to mark it as homed and try and jog it around.Have you calculated what your H value should be yet?
Have you tried different sensitivity values yet?
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@Phaedrux said in Duet 3 - Moves really slow?:
Can you test movement with M915 commented out?
Send G92 X100 to mark it as homed and try and jog it around.Have you calculated what your H value should be yet?
Have you tried different sensitivity values yet?
So I tested a bit around - I added an M117 and found out it moves slow due to stall detection was triggered as soon as it starts, and it tries to do the small "second" pass that is slow.
After playing with motor current + sensitivity I found S2 and 40% power works - I still have no idea why the motor made the stall/vibration sound when I started the homing, but with those 2 excact values it works.
Thanks for the support everyone!
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Glad you figured it out. Stall detection tuning can be tricky.
