RandallR:
What about 2 of the same device on the same processor?I would like to test different designs for an RTC board. All the boards will use the DS1307 RTC chip. I want to test several at the same time and compare drift of the different designs. Since they all have the same address, they can't be on the same bus. Is there a way to attach an I2C device to pins other than A4 and A5?
Only if you write the protocol bit-bang style for other pins. Maybe someone has done it already? I might Google around a bit.