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Accurate timer?

Discussion in 'Misc Electronics' started by JamesB, Aug 3, 2005.

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  1. JamesB

    JamesB Guest

    Im looking for something to give a ttl pulse into a stepper motor driver
    board.
    I thought of using a 555 but I'm not sure on the accuracy level of this, I'd
    rather have something where I could set the frequency (maybe using
    dip-switches?) and it would be properly accurate. The frequency range would
    be fairly low, say a range from 1-50Hz.
    Any layouts that people know of for such things? Would it need to be crystal
    controlled for acuracy?
    James.
     
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