Quote:
Originally Posted by josemapiro
I've been checking the Timer2 perishes not be related to the INT0 and INT1, but with the PWM pins OC1A and OC2B.
If I understand correctly, the Timer2, control the Pins 3 and 9, but as PWM output.
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Not sure if you mean "pins 3 and 9" on your AtMega2560. On the AtMega328 (and presumably earlier chips), brightness is mapped to Port B bit 1, which is pin 15; and contrast is mapped to Port D bit 6, which is pin 12.