Can I change the pins on the communication for a Master-Slave arduino Wire transmission? I want to communicate between 2 arduinos, but on one of them A4&A5 are taken
To complete Ignacio's answer, there's indeed no other hardware I2C on AVR Arduinos.
The only options you have to use other pins is:
- to use bitbang i2c, which is way slower ;
- or you can switch to the Arduino Due which features two TWI ports ;
- or you can use an SPI to I2C serial bridge such has that one.