Documentation seems to say that I2C bus uses pins 20 and 21. In Mega. However in the schemati I2C bus seems to be on pins 43 and 44. What are the correct pins to use.

What pins to use for I2C bus with AVR Mega2560

doughboy May 14, 2012, 7:53pm 5

you're making it harder than it is. it's labelled right there on the board.

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