Sonoff Socket S20 firmware

Firmware for Sonoff Socket S20 This firmware supports MQTT and Home Assistant

Configuration

You can see buildConfig.example.json, copy it to buildConfig.json and fill out the variables:

{
	"arduino": {
		"root": "/opt/arduino/",
		"cmd": "arduino-builder",
		"hardware": "hardware",
		"tools": "tools-builder",
		"libraries": "libraries",
		"src": "sonoff_socket.ino",
		"build-path": "build"
	},
	"mqtt": {
		"host": "192.168.x.x",
		"port": 1883,
		"clientId": "device-updater",
		"name": "username",
		"password": "secret password",
		"deviceTopicPrefix": "device/"
	},
	"wifi": {
		"ssid": "",
		"password": ""
	},
	"devices": {
		"sonoff-socket-s20": {
			"mqttHost": "192.168.x.x",
			"mqttPort": 1883,
			"mqttUser": "sonoff",
			"mqttPassword": "password",
			"topic": "",
			"fqbn": "esp8266com:esp8266:generic",
			"hardware": "hardware/esp8266com/esp8266/libraries",
			"tools": "hardware/esp8266com/esp8266/tools/",
			"libraries": "hardware/esp8266com/esp8266/libraries",
			"prefs": [
				"build.flash_ld=/opt/arduino/hardware/esp8266com/esp8266/tools/sdk/ld/eagle.flash.1m0.ld",
				"build.flash_freq=40",
				"build.flash_size=1M",
				"build.flash_mode=dout",
				"build.flash_flags=",
				"build.f_cpu=80000000"
			]
		}
	}
}

Requirements

• Arduino, tested with 1.8.9
• Arduino core for ESP8266 WiFi chip
• NodeJS
• Gulp

Install dependencies

npm install

Generate configuration, build and update firmware

Just run this command:

gulp --device=sonoff-socket-s20

Demonstration video:

Home Assistant

configuration.yaml:

switch:
  - platform: mqtt
    name: "Éjjeli lámpa"
    state_topic: "smarthome/bedroom/nightlamp/state"
    command_topic: "smarthome/bedroom/nightlamp"
    payload_on: "on"
    payload_off: "off"
    qos: 1
    retain: true
group:
  haloszoba:
    name: Hálószoba
    control: hidden
    entities:
      - switch.ejjeli_lampa

customize.yml:

  switch.ejjeli_lampa:
    icon: mdi:lamp

For more information check out my page here and here.

Donations

• Bitcoin: bc1qx4q5epl7nsyu9mum8edrvp2my8tut0enrz7kcn
• EVM compatible (Ethereum, Fantom, Polygon, etc.): 0x9F0a70A7306DF3fc072446cAF540F6766a4CC4E8
• Litecoin: ltc1qk2gf43u3lw6vzhvah03wns0nkgetg2c7ea0w5r
• Solana: 14SHwk3jTNYdMkEvpbq1j7Eu9iUJ3GySnaBF4kqBR8Ah
• Flux: t1T3x4HExm4nWD7gN68px9zCF3ZFQyneFSK