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Author Topic: nokia 5110 lcd problem  (Read 594 times)
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Hi there,
when i was trying to use the nokia 5110 lcd, i connected its GND to the 3.3v output from my microcontroller and its VCC to the ground. Will this damage the lcd? Now my screen only has a backlight but nothing else. I am not sure about my code. But maybe the lcd damaged already?
Thanks !
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Ouch, yes you may have damaged it.. I think, if there is no reverse current protection on it, it's probably toasted smiley-confuse

But, show the code, and say which arduino you use.
« Last Edit: October 07, 2012, 01:04:16 am by guix » Logged

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Quote
I am not sure about my code. But maybe the lcd damaged already?

Those devices show nothing when the code isn't right. So your lcd may not have been damaged.

I would find a working piece of code and see if indeed the lcd has gone.
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