Simultaneous digitalWriteMS on MUX Shield II

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  • May 15, 2016 at 1:57 pm #2195
    _Roms_
    Participant

    Hello,

    I posted this on the Arduino forum as well (Arduino Forum), but I’m having a hard time to figure out why I can’t seem to be able to turn more than 1 I/O pins to LOW.

    Here’s a video that explains the problem. The MUX is fine addressing individual pins but I’m getting weird results when multiple simultaneous pins are ON.

    May 18, 2016 at 2:25 am #2196
    _Roms_
    Participant

    I think the MUX might be defective. Here’s a picture.

    MUX Image

    May 23, 2016 at 11:56 pm #2199
    _Roms_
    Participant

    Problem solved!! Thanks a lot Mark for shipping the other MUX to me and… figuring out the issue with the MUXShield.cpp file!

    If anyone is having a similar issue, please make sure you use the updated version with the following header:

    Updated by Mark Mayhew, May 22, 2016: Fixed digital output issue where erroneous data was being clocked into shift registers
    October 5, 2016 at 4:09 pm #2289
    paultheflyer
    Participant

    Could you provide a download link for the newer muxshield.cpp file?

    Thanks

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