To get ready, he made a breakout board for 32-channel analog multiplexer device he wants to use. He put the project out on Hackaday.io and also has a video tutorial you can see below. There are ...

If you ever find yourself swapping between a mix of audio inputs and outputs and get tired of plugging cables all the time, check out [winslomb]’s audio multiplexer with integrated amplifier.

This method uses the tri-state logic capabilities of microcontrollers in order to gain efficiency over traditional multiplexing. Often, when it comes to your Arduino project,you never have enough ...

Also, this multiplexing technique turns the massive amount ... and then upload the sketch to Arduino using the Arduino IDE as usual. The finished circuit can display numbers ranging from 0 through ...