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  1. 25-01-2012 #9
    russell's Avatar
    Lives in Millas, France.
    russell
    Last Activity: 23-07-2025 Has been a member for 9-10 years. Has a total post count of 123. Received thanks 12 times, giving thanks to others 0 times.
    I have one of these boards and can confirm that the motors are not powered up if it's not connected to a computer. A circuit diagram of the board can be found here:http://www.drkfs.net/REVERSESTEPPER.htm

    Another point to bear in mind is that the motor current is reduced in the absence of drive pulses to save power when things aren't moving.

    Russell.
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