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  • May 25, 2014 at 5:52 pm in reply to: LCD is backlit but characters are rectangles #26883

    HUSKERS
    Participant

    Today on further examination I found 3 areas of questionable soldering. I’m 60 and my eyes are challenged. Low and behold it came on like its suppose to. More fun to come now!

    May 25, 2014 at 1:20 am in reply to: LCD is backlit but characters are rectangles #26882

    HUSKERS
    Participant

    Ray,
    Mine did as you say. I unplugged power and then held B button in. Plugged in power….LCD was off. I need to check into boot loading mode.
    Rick

    The voltages are correct, that’s good. The first thing to figure out is if the microcontroller is up running. For example, unplug power, then press and hold the second pushbutton (B2) and plug the power back in, does the LCD remain off? If it remains off, that means the microcontroller is running and can successfully enter bootloading mode. If not, that means for some reason the microcontroller is not up running. Can you take off the LCD and take a picture of the microcontroller? Also, make sure the 12MHz crystal (for microcontroller) and 25MHz crystal (for Ethernet controller) are not accidentally switched.
    ray Site Admin Posts: 800Joined: Mon Jul 30, 2012 10:06 pm

    May 25, 2014 at 12:06 am in reply to: LCD is backlit but characters are rectangles #26881

    HUSKERS
    Participant

    I just got my kit this afternoon. I have the same problem above. I am going to get my jewelers eyepiece and look over my soldering.

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