Dim LCD

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psycho
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Dim LCD

Post by psycho » Wed Mar 12, 2008 4:55 pm

Hi all,
I have a 20x2 Okaya LCD and even with the contrast all the way up, the thing is too dim to read! Anyone ever run into this before?

Kevin

L. Daniel Rosa
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Post by L. Daniel Rosa » Thu Mar 13, 2008 5:49 am

I have, but only when the supply voltage was low. I'm lazy and run off 4*AA (NiMH) without regulation.

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philba
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Post by philba » Thu Mar 13, 2008 12:09 pm

check the spec - some of these require negative voltage for contrast.

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