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Thread: Chinese Breakout Boards

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  1. 08-06-2012, 08:56 PM #3
    john-100
    john-100 is offline Registered
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    2083
    Hi Graham ,

    the breakout boards do work but like the tb6560 boards they do break a few design rules

    not connecting a +5V supply to pin 14 of one of the 74HC14 IC's
    or not connecting the unused input pin 13 to 0V or +5V - OK for a 7414 but not the CMOS version !!!!
    the 1K resistors connecting the 74HC244 output to the boards enable output terinals could be a problem with some stepper drivers


    John
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