I have 2 Due and Two DFR0063 I2C LCD. I cannot even pass i2C scanner. I always got No I2C devices found. I tried both SCL/SDA and SCL1/SDA1. For SCL1/SDA1, I do add 10K pull up resister. But still not work. I notice most of example is using Arduino Uno not Due. So I wonder maybe they just not work together. I actually just need any Chelp I2C device work smoothy with DUE not other board. Anyone recommend any goof I2C device for DUE?