After a quick search (I've gotta get to work!) I found a negative voltage
generator from PWM, but not what my LCD is looking for for contrast.
Typically, you put in a 10k pot between Vss & Vdd with the slider on pin 3
(mine looks great with just a 3.3k resistor from pin3 to ground).  I tried
what I thought might work, but it didn't. (a cap across gnd and PWM with
resistor going to the contrast input)

Any ideas?


Thanks,
Barry

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