Quote:
Originally Posted by Maciel
....Is possible to design an analog-controlled PWM drive with current feedback?
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Hi Maciel,
It is possible, and I am working on this (the idea of using NJM3771 or similar driver is the answer
)
Quote:
Originally Posted by Maciel
....Using pulse/direction drive method, the Soundstepper "step" is a single pulse...
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I am aware ot that. The Allegro chip that I am using as stepper driver provides 16 microsteps, and in a combination with 0.9° steppers gives me enough resolution for smooth tracking (0.23 arcsec/microstep)