Head over to the discord server to discuss this firmware: https://discord.gg/zw377qhj9c
Firmware source code for ESP32 and ESP8266 that is compatible with SimHub to build a belt tensioner through WiFi
https://www.simhubdash.com/diy-belt-tensionner/
By default this assumes ESP32 in pins and configuration, ESP8266 may need to be tested further