This is my first post to this site and any advice would be appreciated. I bought a new 20X4 J204A LCD and had it successfully up and running within minutes of attaching it to my Arduino Mega 2560. It ran perfectly for 3 hours. After 3 hours of operating without error I noticed that that the contra…

Solution found: LCD 20X4 Display Problem - Only top two lines display characters

system April 27, 2014, 1:08pm 3

It seems this lcd is available in 3.3V and 5V versions. Do you know which one you have ?

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