StromAmpel: An application using an AZ-Delivery ESP8266MOD 12-F to display the current electricity mix for Germany in a traffic light kind of way

Inspired by this Mastodon account, I programmed an ESP8266 microcontroller to act as a traffic light, indicating the current electricity mix. Check it out on Codeberg! It uses an API from the Fraunhofer Institute and the parts cost around 5€. In my shared flat we use it as an indicator on when to run demanding devices, like...