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#1 2018-12-12 05:16:27

Guennie
Member
Registered: 2018-12-12
Posts: 2

Problem with the Steppermotor

Hello,

Raspberry has missing pulses (dropouts) at pin 16 (STEP pulses) during the Z-axis movement.
Result: Step losses when moving the Z-axis
These dropouts at the Raspberry output are clearly visible on the oscilloscope image.
Since these dropouts are directly visible at the output of the Raspberry, I suspect that this either comes from the operating system (e.g. interrupts) or the application.

Please help me.
Günther

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#2 2018-12-12 05:49:53

Shahin
Administrator
Registered: 2016-02-17
Posts: 2,305

Re: Problem with the Steppermotor

Lower the speed see if it makes any improvement. Due to nanodlp GC and non-realtime OS fast pulse generation is not possible.

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#3 2018-12-12 19:28:26

Guennie
Member
Registered: 2018-12-12
Posts: 2

Re: Problem with the Steppermotor

Thanks for this Info,

I have reduced the speeds, and now its working without missing pulses.....

are tested speed parameter sets available where I should move about ?

Best Regards
Günther

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#4 2018-12-13 04:43:37

Shahin
Administrator
Registered: 2016-02-17
Posts: 2,305

Re: Problem with the Steppermotor

Default nanodlp settings is pretty reliable (max speed)

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