Recommended to be used with a magnetic USB-C cable but not required

Put the magnetic end permanently into the ESP32-3C and easily hang your keys, powering the ESP32, perfect for home presence systems. ESP32-3C is connected means your keys are home, which means you are home. Grab the keys and “away” mode turns on. I've personally done this using MQTT to send an alive message to Home Assistant.

Print with support for the keyring loop and the USB-C hole.

The lid takes some work but will snap in place. Therefore if you want to remove it, get a slim knife and bend it out (The lid will probably break if you do that).

Make sure the lid orientation is correct. The side of the lid with the longer lip should be towards the keychain loop, while the shorter lip should be towards the USB port