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ESPNow connectivity for the Ikea VINDRIKTNING

Most of the code is borrored from Hypfer/esp8266-vindriktning-particle-sensor that uses an ESP8266 to read from GPIO14(RX) and send via ESPNow to a EspNow Server (check debsahu/ESPNowMQTT), which sends it out to a MQTT broker.

Hardware

• •IKEA VINDRIKTNING ($11.99)
• •ESP8266 ($2.00)
• •Dupount cables ($0.50)
• •Soldering Iron & solder

Connections

• •5V on VINDRIKTNING to 5V on ESP8266 VIN
• •GND on VINDRIKTNING to GND on ESP8266 GND
• •REST on VINDRIKTNING to GPIO14 on ESP8266

Original idea from Home Assistant Thread

• •GitHub: Hypfer/esp8266-vindriktning-particle-sensor

ESPHome code

• •ESPHome PM1006
• •Example ESPHome Config/Code

ESPNow code

Source: GitHub: debsahu/esp8266-vindriktning-particle-sensor

• •Use platformio to build this sketch
• •Follow ESPNow server code here: debsahu/ESPNowMQTT
• •Home Assistant

sensor:
  - platform: mqtt
    name: "PM 2.5 Sensor 1"
    state_topic: "home/espnow/pm25_sensor1"
    value_template: "{{ value_json.temperature[0] }}"
    device_class: aqi
    icon: mdi:molecule
    unit_of_measurement: "µg/m³"

  - platform: template
    sensors:
     vindriktning_color_1:
        friendly_name: "Vindriktning Color 1"
        value_template: >-
          {% if states('sensor.pm_2_5_sensor_1')|int <= 35 %}
            green
          {% elif states('sensor.pm_2_5_sensor_1')|int >= 36 and states('sensor.pm_2_5_sensor_1')|int < 86 %}
            yellow
          {% else %}
            red
          {% endif %}

• •Home Assistant Lovelace card (source: ledhed-jgh/Vindriktning-Card - obtain the png images from this repo - check www folder)

type: vertical-stack
title: Kitchen Air Quality
cards:
  - type: picture-entity
    entity: sensor.vindriktning_color_1
    show_name: false
    show_state: false
    state_image:
      green: /local/AQI-green.png
      yellow: /local/AQI-yellow.png
      red: /local/AQI-red.png
  - type: entities
    entities:
      - entity: sensor.pm_2_5_sensor_1
        name: Indoor Air Quality
    show_header_toggle: false
    state_color: false

References and sources

• •GitHub: Hypfer/esp8266-vindriktning-particle-sensor
• •Home Assistant Thread
• •ledhed-jgh/Vindriktning-Card
• •@haxfleisch for their teardown of the device.
• •Gabriel Valky for the incredibly useful LA104 custom firmware + tools