Hi Rod,
The noise seems to be minimal because the microstepping PWM frequency is higher than I can hear (~50kHz - this depends on inductance of the motor coils, of course).
Max speed from SoundStepper is around 2k pulses per second, resulting speed is similar to scope.exe (I am sure motors can do better than that, since here I am using high current, low voltage bipolar steppers, while on my dob I have steppers from old 8" floppy drives, operating at 36V or so.. and the PWM from scope is audible.
Also,please note, mechanical reduction will be different - much lower so slewing will be faster than my dob - so here I have 15° for 30 sec (half degrees per sec).
Last edited by bojan; 09-05-2012 at 08:24 PM.
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