Using COMPA and COMPB correctly

Projects Discussion and Showcase Science and Measurement
10

soulid:
Your code works! Jihaa! :grin:

I tried several values and found a "base delay" of abput 12.5us meaning that there is no Interupt control below that. From that value on the control works , but I can live with that.

Thank you for your brilliant help!

The digitalWrite() function takes a while and probably explains much of your 12.5 microsecond delay. You can get faster response using direct port access. On the UNO, Pin 13 is PORTB bit 5. (See: Arduino Pins - Google Drive )

To set it HIGH:

PORTB |= 0b00100000;

To set it LOW:

PORTB &= 0b11011111;