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Latvian HomeKit made with Raspberry Pi and Arduino

Description

Homemade HomeKit device using a lot of cables but giving that joy when you create something with your own hands. A small demo here:

HomeKit Demo

Screenshot from iPhone:

HomeKit screenshot

Hardware list

  • Apple TV 3rd gen (Works as your HomeKit HUB)
  • Router (I use ASUS RT-N12+)
  • iPhone (for obvious reasons)
  • Arduino Uno
  • HR911105A Ethernet Shield
  • DHT22 temperature sensor
  • WS2812B RGB LED ring
  • Keyestudio Single Channel Relay
  • Raspberry Pi 3
  • Lot of cables (ethernet and arduino)
  • Soldering iron

Installation

Raspberry Pi

I use Pi as HomeKit server using https://github.com/nfarina/homebridge. Installation is pretty straight forward. After you've installed HomeBridge on Pi:

  1. cd ~/.homebridge
  2. touch config.json
  3. nano config.json
  4. Add this code to config.json (change the IP address to suit your local network)
{
  "bridge": {
    "name": "Homebridge",
    "username": "CC:22:3D:E3:CE:31",
    "port": 51826, 
    "pin": "031-45-154"
  },
  "platforms": [],
  "accessories": [
    {
      "accessory": "Http",
      "name": "Desk Lamp",
      "on_url": "http://192.168.2.202:80/?lamp_on",
      "off_url": "http://192.168.2.202:80/?lamp_off",
      "http_method": "GET"
    },
    {
      "accessory": "HttpTemphum",
      "name": "Living Room Weather",
      "url": "http://192.168.2.202/?weather",
      "http_method": "GET"
    },
    {
      "accessory": "HttpTemphum",
      "name": "Outside Weather",
      "url": "http://192.168.2.202/?w_out",
      "http_method": "GET"
    },
    {
      "accessory": "HTTP-RGB",
      "name": "RGB",
      "switch": {
        "status": "http://192.168.2.202/?rgb_status",
        "powerOn": "http://192.168.2.202/?rgb_on",
        "powerOff": "http://192.168.2.202/?rgb_off"
      },
      "brightness": {
        "status": "http://192.168.2.202/?rgb_brightness",
        "url": "http://192.168.2.202/?rgb_light/%s"
      },
      "color": {
        "status": "http://192.168.2.202/?rgb_set",
        "url": "http://192.168.2.202/?rgb_hue/%s",
        "brightness": true
      }
    }
  ]
}
  1. Install $ npm install -g homebridge-http
  2. Install $ npm install -g homebridge-httptemperaturehumidity
  3. Install $ npm install -g homebridge-better-http-rgb
  4. Run HomeBridge $ homebridge

Arduino

I've uploaded Arduino INO file to this repository. My Arduino setup:

  • Arduino Uno
  • HR911105A Ethernet Shield (In the beginning tried with ESP8266, but it was too much hustle)
  • SRD-05VDC-SL-C relay module connected on pin 3
  • DHT22 temperature and humidity module connected on pin 2 (inside) and on pin 4 (outside)
  • A desk lamp connected to relay module