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ESPHome devices

Airtap T Series 3btn PCB by SiloCityLabs: ESPHome

Airtap T Series 3btn PCB by SiloCityLabs (other devices, ESP32): GPIO pinout and a starter ESPHome config with relays, buttons, LED. Local Home Assistant control with no cloud.

Type
Other devices
Chip
ESP32
Region standard
GLOBAL

Pinout

PinFunction
GPIO2PWM
GPIO4Temp
GPIO6OLED SDA
GPIO7OLED SCL
GPIO8Button Up
GPIO9Button Down
GPIO10Button Toggle

Find it in shops: AliExpress

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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: airtap-t-series-3btn-pcb

esphome:
  name: ${name}
  friendly_name: "Airtap T Series 3btn PCB by SiloCityLabs"

esp32:
  board: esp32dev

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: GPIO8
      mode: INPUT_PULLUP
      inverted: true
    name: "Button 1"  # Button Up
  - platform: gpio
    pin:
      number: GPIO9
      mode: INPUT_PULLUP
      inverted: true
    name: "Button 2"  # Button Down
  - platform: gpio
    pin:
      number: GPIO10
      mode: INPUT_PULLUP
      inverted: true
    name: "Button 3"  # Button Toggle

status_led:
  pin:
    number: GPIO6
    inverted: false  # OLED SDA

# Other pins from the pinout:
#   GPIO7: OLED SCL
#   GPIO2: PWM
#   GPIO4: Temp

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.

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