prefixkit Ask an engineerAsk Support RU

ESPHome devices

myStrom WiFi Button: ESPHome

myStrom WiFi Button (wall switches, ESP8266): GPIO pinout and a starter ESPHome config with relays, buttons, LED. Local Home Assistant control with no cloud.

Type
Wall switches
Chip
ESP8266
Region standard
GLOBAL

Pinout

PinFunction
GPIO5White LED - Low on
GPIO13Green LED - Low on
GPIO14Red LED - Low on
GPIO4Must be set High if using button to wake from deep sleep

Find it in shops: AliExpress

Links open a search in the shop; some are affiliate links: buying through them costs you nothing extra and supports this site. We do not sell devices or get them from manufacturers.

Starter ESPHome config

Built from the pinout above. Keys and the Wi-Fi password come from secrets.yaml in ESPHome. Check the pins against your hardware revision before flashing: one model can ship with different boards.

substitutions:
  name: mystrom-wifi-button

esphome:
  name: ${name}
  friendly_name: "myStrom WiFi Button"

esp8266:
  board: esp01_1m  # most plugs and relays have 1 MB flash; check yours

logger:
api:
  encryption:
    key: !secret api_key
ota:
  - platform: esphome
    password: !secret ota_password
wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap: {}
captive_portal:

binary_sensor:
  - platform: gpio
    pin:
      number: GPIO4
      mode: INPUT_PULLUP
      inverted: true
    name: "Button"  # Must be set High if using button to wake from deep sleep

status_led:
  pin:
    number: GPIO5
    inverted: false  # White LED - Low on

# Other pins from the pinout:
#   GPIO13: Green LED - Low on
#   GPIO14: Red LED - Low on

How to flash

  • Most devices are flashed over UART: a 3.3 V USB-TTL adapter to RX, TX, GND and 3V3, holding GPIO0 to ground at power-on (ESP8266/ESP32). Mains power disconnected.
  • Beken (BK72xx) and Realtek chips are flashed with ltchiptool, or with cloudcutter without opening the case if the firmware allows it.
  • Details and board photos: the device page in the ESPHome database.

A config from scratch: ESPHome generator. Which pins are safe: pinout.

Similar devices

Idea?