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  1. #31
    Hi
    I need to convert this parallel board to USB but the firmware codes aren't suitable for it. Each pin of the parallel port goes through a Fet directly to the a coil of a motor. It controls 2 unipolar stepper motors. As you say if one needs a diferent firmware you could change it and post it here, I kindly ask you to do so.I attach the board for your reference . Thanks
    Click image for larger version. 

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    Last edited by Lee Roberts; 26-03-2019 at 10:31 PM.

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