6. Now if you look through the code you will see that in the beginning there is a lot of commented out code that allows the user to select what display they want to use. Right under all that add a new ...

In fact, I2C is the backbone for a lot of side channels like these – it’s also one of our preferred interfaces for connecting to cool sensors, and in this case, an OLED display!

Inexpensive OLED displays with I2C interfaces abound, but there is a catch: they tend to be stuck on I2C address 0x3C. Some have a jumper or solder pads to select an alternate (usually 0x3D), but t… ...