i2c, yun, digital pins 2 & 3

Products & Technology Grove
#1

Hi

Can you use the I2C port as well as the D2 & D3 pins together? My project works fine with the RGB LCD connected to the I2C port as shown in the manual.

As soon as I put a LED into D3, or a button in D2, reading from the console stops working. As soon as I remove the other components the console works again and everything that is typed gets read.

Any ideas? New to I2C and the LCD!

#2

Hello,

ATmega32u4 used in Yun has I2C: on 2 (SDA) and 3 (SCL). Hence, there is a conflict.

Thanks and Warm Regards.