Stall not being detected...
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According to the web dashboard, my Y axis, which is not detecting, is going 339mm/sec.
Also, I checked the Dashboard for Vin, and it never drops below 24.0. At idle, it's mostly 24.1, sometimes 24.2. Running, it's mostly 24.1, and occasionally 24.0 (rarely).
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Can you give some more details about what the motor is driving? What kind of loads/forces are applied to it? What do you think it causing it to skip steps in the first place?
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There is no load.
Just a small 1.5" x .5" aluminum knob (flywheel).
Oh, yeah...and occasionally my hand stopping the knob for a forced stall. But the whole reason I started this exercise is because it would randomly stall with no changes made. At higher currents, it takes a lot more than a little fingertip pinch to get it to stop--you have to GRAB it.
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That's going to be hard to detect if it's just some resistance from resonance vibration.
The stall guard feature is intended to detect an impact that causes a back EMF spike, like the nozzle impacting with a print. This may be too subtle to detect.
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@Phaedrux said in Stall not being detected...:
impacting
But it's not even detecting if I grab it at full speed. I would expect it could, at 339 "mm" per second.
I just tested, and the motor can run these speeds even as low as 260mA, but no 250.
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When it stalls in operation, is it coming to a full stop?
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Will have to see what DC42 thinks. I'm no expert on stalls. Just my best guesses.
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@Phaedrux , Thank you for your help.
Yes, it comes to a full stop when it stalls, no matter when it stops (i.e. during accel, decel, or full speed).
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Photo of the motor and mass? Is it well balanced?
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@Phaedrux , probably not...although I ordered a steel knob, I received an aluminum one. Like I said, the knob is only 1/2" thick x 1.5" OD, the motor is about 1-3/4" long, so I think that's a dual stack motor.
When warm, it would run reasonably reliably with at .26A current. After letting it cool down, .5A is not enough to get it moving--it is stalling every time there, now, and .8A is hit & miss. I don't really want to have a long warmup cycle just to get this reliable.
