Someone has invented a way to add Wi-Fi to a standard Arduino Uno, by proposing a module that drops into the DIL socket normally ... “You’ll be able to maintain full compatibility in the pinout, ...

It's similar to the iconic Uno in a lot of ways. For instance, it's based on the same microcontroller, uses almost identical pinout ... module. The I2C/TWI pins on the Micro are on D2 and D3. For ...