I tried using accelerometer on pins 20 & 21 but it seems like there is something wrong with the board (no, I did not use +5V anywhere). Somewhere it is mentioned DUE has two I2C interfaces, and there are pins SCL1 and SDA1 next to AREF pin. How I can switch to using them?

How to use second I2C?

pouya444 February 27, 2015, 5:15am 11

Thanks John,
It worked for me too.

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