Standalone ATmega328P and I2C

Other Hardware 3rd Party Boards
1

Hi guys

I've just build my first standalone Arduino based on the ATmega328P. At the moment in trying to transfer my project to it. My problem is that I'm using a sensor (BMP180) that uses I2C. How do i approach this?

Thanks!

PS: I read somewhere that a 4.7 ohm resistor is needed. I got a lot of different resistors but not one of those. Can other be used?

2

Kaka:
Hi guys

I've just build my first standalone Arduino based on the ATmega328P. At the moment in trying to transfer my project to it. My problem is that I'm using a sensor (BMP180) that uses I2C. How do i approach this?

Thanks!

PS: I read somewhere that a 4.7 ohm resistor is needed. I got a lot of different resistors but not one of those. Can other be used?

It would be 4.7k Ohm, but the value isn't critical. 2.2k, 3.3k... they all work.

But... if it works on an Uno it should work on your standalone without resistors. Just connect the wires.