HomeSpanAwairSensor

Very basic HomeKit bridge for Awair Element Indoor Air Monitor.

About

Uses an ESP32 based microcontroller to listen to the sensor data sent from a Awair Element and relays them out as HomeKit HAP Notifications. No internet connection required and everything stays local.

Directions

1). Install with Arduino IDE

1. Open the Arduino sketch HomeSpanAwairSensor.ino in the Arduino IDE

2. Install both the HomeSpan and Arduino_JSON libraries

   Sketch > Include Libraries > Manage Libraries

3. Follow the directions here to install the various ESP32 boards or install whatever is relevant to your specific board and select the board you are using from

   Tools > Board > ESP32 Arduino > Your Board

4. Upload the sketch to the board with Sketch > Upload or click the little arrow pointing right in the top left corner of the window

2). Configuring the device for HomeKit

1. Turn on the sensor Local API Feature
2. Change the following parameters in sketch with yours:

const char* ssid        = "My Wi-Fi SSID";      // Wi-Fi SSID
const char* password    = "My Wi-Fi Password";  // Wi-Fi Password
const char* pairingCode = "12341234";           // Pairing Code. Not Allowed: 00000000, 11111111, 22222222, 33333333, 44444444, 55555555, 66666666, 77777777, 88888888, 99999999, 12345678, 87654321
String serialNumber     = "70886B......";       // Sensor Serial Number

You can find the serial number in on the back of your device:

3). Connect to HomeKit

Add the device like you would any other accessory by typing your pairing code from parameters above. By default pairing code is 1234-1234

Usage

If you're connected to HomeKit, you should be able to see the sensors.

Dependencies

Uses the wonderful HomeSpan library for HomeKit functionality and Arduino_JSON for parsing the sensor data.