generic esp8266/esp32 idf iot mqtt client firmware
Firmware can be manually build and installed on devkit boards and also on Sonoff devices lister bellow. It will connect to configured MQTT bridge from where can be used from any MQTT client: Node-Red, MQTT Dash, etc.
Supported Sonoff devices:
- Sonoff Basic: https://sonoff.tech/product/wifi-diy-smart-switches/basicr2
- Sonoff S20: https://www.itead.cc/smart-socket.html
- Sonoff T1: https://www.itead.cc/sonoff-t1-eu.html
- Sonoff 4CH: https://www.itead.cc/smart-home/sonoff-4ch.html