Sonoff ESP8266 mqtt switch
This code goes with an article I wrote describing using a Sonoff Basic WiFi switch with MQTT. A Raspberry Pi is setup with Mosquitto MQTT. The switch is programmed using Arduino IDE and the ESP8266 generic community board configuration.
For details see Sonoff IoT Switch using Mosquitto MQTT and Arduino ESP8266
Features
- LED light is on when the switch is on
- Switch button controls the light
- Turn on or off from MQTT commands
- Sends status after connecting to MQTT
- Send status when switch pressed
I used the following settings in the Arduino IDE for the Sonoff switch ESP8266.
| Setting | Value |
|---|---|
| Board | Generic ESP8266 Module |
| Upload Speed | 115200 |
| CPU Frequency | 80 MHz |
| Flash Mode | DOUT |
| Flash Size | 1M (no SPIFFS) |
| CPU Frequency | 80 MHz |
| Crystal Frequency | 26 MHz |
| Reset Method | ck |
| Debug port | Disabled |
| Debug Level | None |
| IwIP Variant | v2 Lower Memory |
| VTables | Flash |
| Builtin Led | 13 |
| Port | the port specified with USB serial connection |