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Thread: motor backdrive

  1. #1
    Join Date
    May 2008

    motor backdrive

    I am building a motor controller that drives a motor then briefly drives it in the reverse direction for a fraction of a degree once power is deactivated (if turning clockwise CW a counterclockwise CCW pulse is required, if turning CCW, a CW pulse is required).

    Is anyone able to assist with a circuit that enables this? As I said, the reverse rotation is very brief, perhaps a 555 timer based solution. The problem I have at the moment is being able to "remember" the polarity of the initial rotation so that the timer is able to correctly send the motor in teh reverse direction.


  2. #2
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Colorado, but Canadian!
    If you use a stepper motor it is much more precise.

    My opinion is to use a cheap PIC.

    if you want to do it all logic chip based, then to remember polarity use a latch (ff).
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