lcd dosent work with ramps 1.4

Home Forum Makelangelo Polargraph Art Robot lcd dosent work with ramps 1.4

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  • #25389
    Avataromarb
    Participant

    Hello everybody i’ve just built my first polograph machine followign this instructable https://www.instructables.com/id/Polargraph-Drawbot/ using the ramps 1.4 i’ve just uploaded the firmware to the board and i can controll it with the makelangelo software but the problem is that when i plug the lcd it dosen’t work i just get a blue screen and i’ve uploaded the same firrware as the instructable i have a reprap 12864 lcd does anyobdy knows how i can solve this problem thanks and i’m a beginner on this like said i’ve just finished building it today
    3i

    #25451
    DanDan
    Keymaster

    The instructable firmware instructions are probably out of date. Try this:

    https://mcr.dozuki.com/Guide/How+to+update+Makelangelo+firmware/4?lang=en

    #25459
    Avataromarb
    Participant

    i did that, with no luck lcd still blank

    #27465
    DanDan
    Keymaster

    According to this thread https://forum.arduino.cc/index.php?topic=556921.new#new
    Everything should be the same but one of the connector is physically rotated 180 degrees.
    Does that make sense? It could just be you have a cable backwards.

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