Problems interfacing with I2C devices

Projects Programming
1

I am a newbie, probably the source of my problems. I wish to use the MLX90614 IR temp sensor for a project that will require reprogramming it. I had no luck doing that so moved to a simpler task to learn to use the I2c interface, r/w to the 24LC256 using the sketch from the youtube humanHardDrive video. I can't even get that code compiled.

So to the question: do the wire and/or the i2cmaster libraries work with the Arduino Uno? If I at least know wire.h works with the Uno, I can beat on it for a while....

2

I have a Uno and use the wire library often. Never had a problem that was not related to a wrong address, lack of pullups or just bad code. Post your code and any errors that the IDE spits out and we can help.

3

Wire works with the uno. Wire - Arduino Reference . It uses the analog pins. A4 (SDA), A5 (SCL).

4

Thank you both for the quick responses. I'll go back and put the code in line by line and try to work it out. I learn more quickly by experience than by using another's code but I'll probably be back. Just knowing wire.h works with the Uno gives me a lot more confidence.

5

If you run into too many problems, post your code for some help.

6

I also like to learn by doing things, but you may find some useful reading here Arduino Playground - LibraryForI2CEEPROM

Cheers