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Q: Lcd Contrast And Pwm

C

Chris

Jan 1, 1970
0
Ok so it seems powertip's PG12864 serise of lcd's run at -5v to +5 for
contrast

how can i generate a range of -5 to +5 with pwm? i can do -5->0 ot 0->5
but how can i do the whole range?

or what would be the best way to have software controlled contrast?

Thanks
 
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