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Topic: Where is Vee on Meg 2560 (Read 635 times) previous topic - next topic


I can not find how to get a negative V to run the 12864a LCD

So far I can compile and load great, but have a completely blank screen
Btw it's a white on black


You do not get the negative voltage for the LCD from the Mega2560.  Many Graphical LCDs provide a negative voltage supply, typically on pin 18.  Otherwise you will have to generate it yourself with some external components.



Now that I go back and look at the wiring diagram it's pretty clear.

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