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step pulse and dir are not smooth

23 Nov 2017 08:41 #102250 by thang
I dont know if this is a real problem but when i check halscope i see the pulse/dir are weird. They are not smooth and my stepper motor too. Is there any reason can cause this problem
23 Nov 2017 14:09 #102258 by tommylight
That looks about right.
You might want to lengthen the step time, especially if using chinese drives, that will improve smoothness a lot.
The following user(s) said Thank You: thang
26 Nov 2017 15:47 #102355 by andypugh
What you are seeing there is likely an artefact of measurement due to the sample time of the halscope, you are only sampling at 1kHz
Click the button that says "2000 samples at 1kHz" and put the Halscope sampler into the base-thread and you stand a better chance of seeing the real pulse shapes.

You probably don't even see most of the pulses. The fact that you can see any at all may mean that (unusually) your step pulses are too _long_
The following user(s) said Thank You: thang
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