Rather than be left on the wrong side of the divide [Stefan S] has come up with his own USB-C version of of an Arduino Pro Micro to avoid having to always find a different cable. Home made ...

The transmitter and receiver For the transmitter, he turned an Arduino Pro Micro into a USB sound card which he could plug into his laptop. That outputs both the audio signal and a 40 kHz carrier ...

If it's not active, the button glows red, but turns off after a minute. The PCB is designed to be soldered on top of an Arduino Pro Micro. To have an easy illuminated button, the lever is illuminated ...

WARNING: WORK IN PROGRESS. USE AT YOUR OWN RISK! The connection between the USB Host Shield and the Arduino Pro Micro over SPI, and is based on this topic: https ...