On tutorials are most people using the A4&A5 pins with the Wire.h library. But i have an arduino with dedicated I²C pins. How can i use them? Arduino

1 Answer 1


They are the same pins. They are physically connected to each other on the UNO board. (So SDA is connected to A4. SCL is connected to A5)

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.