Switching Sonoff Basic and Sonoff S20 (Webserver, local button and MQTT).
This project ist split in two parts: sonoffSimple/sonoffSimple.ino is just a simple demo as described here.
The more advanced software (sonoffSocket.ino) supports MQTT, toggle, status and is actively developed. Just copy sonoffSocket.ino into your Arduino-IDE folder. To use mqtt you have to install external library "PubSubClient". Change your SSID and WiFi-Key and activate MQTT if needed (choose a topic too). Connect Sonoff Basic or Sonoff S20 to your FTDI-Adapter and flash it using the Arduino-IDE.
The socket can be controlled by opening /on (to activate) and /off to deactivate. If MQTT is enabled, send 1 or 0 to your chosen topic (defined at the beginning of your code). Get the current status with /state and toggle with /toggle
This repository is part of article "Bastelfreundlich" from German computer magazine "c't".