I have been experience some I2C problems between MEGA and UNO. First I wire a I2C device#1 to MEGA, and works fine. Then I wire the device#1 to UNO and the same program, and it doesn't work. A few days later, I did another experiment. I wire I2C device#2?which works with UNO each time) to MEGA, and…

I2C is different between MEGA and UNO?

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