need Guru on duet 3 mini5 using stall guard/sensor less homing
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if you have stall detection enabled, you may get stall warnings, that's normal. I tend to get them during prints on Z when I do fast Z hops because the sudden stop during those moves also generates back emf.
<>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>
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@oliof
thanks, that's interesting to know, ive mainly seen them on Z axis , but have also seen them on X too now and again.i suppose i could set a new sensitivity (S parameter) at the end of the homing routines .
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Ok i have noticed this:-
hit the "emergency stop " button and all i run is "max z home. g" Macro as above , but its always motor 0.4 that doesn't move.
if i switch on the printer (mains on) in the config i run the same macro "max z home. g" and its motor 0.4 that doesn't move .this seems to happen 100% of the time well i did 20 tests and it happened each time.
so here is where its gets a bit odd, i swapped stepper motor wiring 4 and 6 , re did config so the stepper motor order in M584 was in the correct order again , but now its stepper motor 0.6 playing up.
so could this be a software issue as it always seems to be the first stepper in the M584 list , or just coincidence?<
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@moth4017 said in need Guru on duet 3 mini5 using stall guard/sensor less homing:
No more Gurus out there playing with the Duet 3 mini5 tmc2209
I setup homing via stalling and it worked. Compared to an actual endstop sensor it made quite a thump.
I quickly installed actual endstop sensors.
I don't like thumps.
Frederick
Printers: A FT-5 with the 713 upgrade bits, a custom MarkForged style, a small Utilmaker style, a small CoreXY from kit and a E3D MS/TC setup. Various hotends. Using Duets (2 and 3) running 3.4.6
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@moth4017 since you swapped the wiring as well it's hard to say.
<>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>
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I have the x y sensorless homing well just a gentle tap for homing,
the Z homing max also works with a gental tap, but sometimes the motor just stalls and doesnt move.<
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@oliof
i suppose it rules out if it was a mechanical issue .. -
sure, but I would check the wiring on both ends anyways to ensure there are no bad crimps.
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thats has caught me out in the past before , that would be a nice easy fix :), but not this time .
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@moth4017 said in need Guru on duet 3 mini5 using stall guard/sensor less homing:
I have the x y sensorless homing well just a gentle tap for homing,
the Z homing max also works with a gental tap, but sometimes the motor just stalls and doesnt move.That suggests you are reducing the current too much (I assume you are reducing the current) which helps with obtaining the gentle tap but also may be creating the lack of movement.
Frederick
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Ive tried settings from low to high in the sensitivity H settings from 50 to 700 current from 10% to 100% .
it does seem to be 90% of the time the first stepper motor listed in M584 stalls
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@moth4017 said in need Guru on duet 3 mini5 using stall guard/sensor less homing:
Ive tried settings from low to high in the sensitivity H settings from 50 to 700 current from 10% to 100% .
it does seem to be 90% of the time the first stepper motor listed in M584 stalls
Well, that rules out that theory.
I don't use the "stall guard" feature and know only the basics.
Good luck.
Frederick
