it might be cool to have a database of common I2C slave device addresses so that the scanner itself can report back which particular chips it’s found. The one caveat with the Arduino scanner is ...

He didn’t have an amateur radio license, so he decided to use it as a police scanner. Since the schematics ... his own signals to the chip over I2C using an Arduino. He also recorded the signals ...

The Metro 328 has been created to provide extra features on top of what you would expect from the Arduino Uno offering plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM.