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No power unless on computer USB

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  • No power unless on computer USB

    I have a 12vdc 1.5 amp power adapter I use for a variety of Arduino projects. It works powering up my arduino 2560, but no video on the uvga-iii. If I swap to the computer usb cord, I get video. with the USB, I have 4.85v on the arduino 5v pin, with the 12vdc adapter, I have 5.01v. I've tried several power adapters, and it only works off the computer usb.
    Steve Spence KK4HFJ
    http://arduinotronics.blogspot.com

  • #2
    Can you describe your connections to the uVGA module (voltage, serial, whatever) and perhaps attach a photo showing them?
    Mark

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