Sonoff Basic / ITEAD ESP8266

pip3 install tasmotizer
chmod 777  /dev/ttyUSB0 
tasmotizer.py
Release 12.5.0
tasmota.bin
Tasmotizue!

SSID: ESP_0
pass: configesp

screen /dev/ttyUSB0 115200

# configuration.yaml
switch:                         
  - platform: mqtt            
    unique_id: sonoff_poweroutlet
    name : "SonOff"           
    state_topic: "stat/device_name/POWER"
    command_topic: "cmnd/device_name/POWER"
    value_template: "{{ value_json.STATE }}"
    payload_on: "ON"          
    payload_off: "OFF"        
    state_on: "ON"            
    state_off: "OFF"          
    qos: 2