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--- ikea_vindriktning_esphome [2023/08/15 19:10] – created benoitb
+++ ikea_vindriktning_esphome [2023/08/18 08:54] (current) – benoitb
@@ Line 1: / Line 1: @@
 ====== Ikea Vindriktning, bme280, sgp40, wemos S2 mini ======
-L'idée est de faire un boitier de mesure de la qualité de l'air intégré facilement dans Home Assistant.
+The aim is to create an air quality measurement device that iseasily integrated into Home Assistant.
-Liste des courses:
+Shopping list:
-  * Ikea Vindriktning capteur de particules fines
+  * Ikea Vindriktning, PM2.5 sensor, case, LED, off-line controler
     * https://www.ikea.com/fr/fr/p/vindriktning-capteur-qualite-de-lair-70498242/
-  * Capteur de température, pression, humidité: bme280
+  * Temperature, pressure, humidity sensor: bme280 3.3v version
-  * Capteur de pollution VOX: sgp40
+    * https://s.click.aliexpress.com/e/_mNFfu6I
+  * VOX pollution sensor: sgp40
+    * https://s.click.aliexpress.com/e/_msVbfiE
   * ESP32-S2 mini
-  * Un peu de câble et de quoi souder
+    * https://s.click.aliexpress.com/e/_mOTHPQi
+  * Some cables and tools to solder
+Wiring schematic:
+{{::ikeahack-connection.png?nolink|}}
+Once soldered:
+{{::ikehack_components.jpg?nolink|}}
+Solder points on the IKA stock PCB:
+{{::ikehack_solderpads.jpg?nolink|}}
+Final installation:
+{{::ikehack_install.jpg?nolink|}}
+Comments:
+  * In green, the Wemos S2 Mini is just slotted there. It's a tight fit so it doesn't move. I placed it under the fan not to disturb airflow around the PM1006 sensor and avoid heating up the upper chamber. The aim is also not to influence the temperature measurement.
+  * In blue, I cut a piece of the plastic wall to let the cables pass.
+  * In red, I sticked the sensors on each side of the case as close as possible to the venting grill. I used 3M VHB double sided tape.
+YAML configuration for ESPHome:
+<code>
+esphome:
+  name: ikehack-air
+  platformio_options:
+    board_build.extra_flags:
+      - "-DARDUINO_USB_CDC_ON_BOOT=0"  # Override, defaults to '-DARDUINO_USB_CDC_ON_BOOT=1'
+esp32:
+  board: lolin_s2_mini
+  framework:
+    type: arduino
+# Enable logging
+logger:
+# Enable Home Assistant API
+api:
+  password: ""
+ota:
+  password: ""
+wifi:
+  ssid: "yourwifi"
+  password: "yourwifipassword"
+  # Enable fallback hotspot (captive portal) in case wifi connection fails
+  ap:
+    ssid: "Ikehack-Air Fallback Hotspot"
+    password: "IOaAbwZFLoI2"
+captive_portal:
+# uart bus for PM1006 sensor
+uart:
+  rx_pin: GPIO35
+  baud_rate: 9600
+#i2c bus for extra sensors bme280 and sgp40
+i2c:
+  sda: GPIO16
+  scl: GPIO18
+  scan: true
+  id: bus_a
+sensor:
+  # particles from the Ikea sensor
+  - platform: pm1006
+    pm_2_5:
+      name: "Particulate Matter 2.5µm Concentration"
+  # bme280 temp pressure humidity
+  - platform: bme280
+    temperature:
+      name: "Ikehack Temperature"
+      id: bme280_temp
+    pressure:
+      name: "Ikehack Pressure"
+    humidity:
+      name: "Ikehack Humidity"
+      id: bme280_hum
+    address: 0x76
+    update_interval: 20s
+  # sgp40 Volatile Organic Compound Sensor
+  - platform: sgp4x
+    voc:
+      name: "Ikehack VOC Index"
+    nox:
+      name: "Ikehack NOx Index"
+    update_interval: 20s
+    compensation:
+      humidity_source: bme280_hum
+      temperature_source: bme280_temp
+</code>