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  1. #2
    I've used several of these spindle boards from Roy at DIYCNC with no problems, simple and easy. http://www.diycnc.co.uk/html/spindle_boards.html

    You only really need this if you want to control the speed.
    If you just want to turn on/off then usually your BOB will have relay outputs so just use these to control Run signals on VFD.
    Last edited by JAZZCNC; 13-08-2013 at 11:44 PM.

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