DIY HomeKit with Raspberry Pi and Xiaomi Robot Vacuum

Inspired by tweets of Steven Troughten-Smith, people started to experiment with Raspberry Pi’s as DIY HomeBridge devices. One of them is Wojtek Pietrusiewicz. He wrote a nice article which I used as base for this post.

Introduction

I own a Xiaomi Robot Vacuum. This robot can be controlled by the Xiaomi app, however, I don’t like it very much. The idea is to control this robot over HomeKit. To use HomeKit, I use an old Raspberry Pi 1B. The software will be HomeBridge.

Setting up the Pi

Installation and Configuration of Raspbian

Use Etcher to write the image to the SD card. Remount that SD card and add a file called „ssh“ in the root of the mounted partition. This will enable SSH from the beginning so that you can login directly to the Pi. I don’t want to attach a screen or keyboard to that machine so it will only be reachable over the network. Now boot your Pi from this SD card.

Identify the Pi’s IP (e.g. by looking at the network overview in your router). Now connect to that IP with user „pi“. The default password is „raspberry“. Please change the password now with passwd and assign a new user password.

Update everything with apt:

 

Install nodejs 8.9.4

According to Wojtek only this version works currently with HomeBridge. I did not test any other version so I’m just describing what I did on my machine:

  1. Download nodejs for the PI into your users homefolder, e.g. with wget https://nodejs.org/dist/v8.9.4/node-v8.9.4-linux-armv6l.tar.xz
  2. Unpack the file with tar -xvf node-v8.9.4-linux-armv6l.tar.xz
  3. cd node-v8.9.4-linux-armv61
  4. sudo cp -R * /usr/local/
  5. add export PATH=$PATH:/usr/local/bin to e.g. ~/.bashrc
  6. node should be now available

Install HomeBridge

  1. Install the necessary libraries: sudo apt-get install libavahi-compat-libdnssd-dev
  2. Install HomeBridge with npm: sudo npm install -g --unsafe-perm homebridge
  3. open /etc/default/homebridge and safe it with this content:
  4. open /etc/systemd/system/homebridge.service and safe it with this content:

Setting up HomeBridge with Xiaomi Robot Vacuum

  1. sudo npm install -g homebridge-xiaomi-mi-robot-vacuum miio
  2. open ~/.homebridge/config.json and safe it with this content:

    Generate a new MAC address separated by : using this website. You’ll need the IP address of your Xiaomi robot as well as the token. There are several ways to get the token. I’ve extracted mine from the iOS backup. Instead of uploading the token I’ve used this command on the token taken from the sqlite database:
  3. Check if everything is working by starting homebridge for the first time. It should show a QR code. If it does, cancel the process with ctrl+c

Automate HomeBridge startup

Adding the HomeBridge to iOS devices

  1. Install the Home app, if you’ve removed it from your device. You can reinstall it from the App store.
  2. Open the Home app and add a new device
  3. If you’ve give the app access to your camera, you can scan the QR code you’ve seen earlier. However, HomeBridge is now running as a daemon in the background so you won’t see that QR code. You can add the bridge manually by using the PIN you’ve set in the config.

Forward Kodi/XBMC video information to hyperion on Raspberry Pi

My current network setup allows me only to use small bandwidth connections between the living room (that’s where my Raspberry Pi is used as my Mediacenter) and office (my NAS). However, my Macbook is fast enough and can access the NAS wirelessly, so that I often use it as a replacement for the hardwired Raspberry Pi.

However, I cannot use my Hyperion Ambilight setup behind the TV in combination with the Macbook, because its only connected to the Raspberry Pi. But yesterday I’ve found this plugin which enables the Kodi setup on my Macbook to connect to the Hyperion Server on my Raspberry Pi over network.

  1. Download the zip file with the content of the git repository.
  2. Start Kodi on the Macbook and install it using the add on manager. You can point to the zip file directly without the need to unzip it first.
  3. Configure the installed plugin to connect to the ip of your Hyperion server.
  4. Start a video and be amazed that the lights on your TV will work wirelessly 😉

Update OpenElec 4.2.1 to 5.0.0 on a Raspberry Pi

XBMC is no more, it was replaced by KODI. The OpenElec team updated its media center distribution to version 5.0.0 which includes KODI. So it was time to update my RaspberryPi and its really easy:

  1. Backup your current installation with the OpenElec Backup tool.
  2. Move your backup to a secure location. You can access the backup tar file via SMB from the backup share.
  3. Download the 5.0.0 release image for Raspberry Pi.
  4. Place the tar file in the update share of your OpenElec installation.
  5. Reboot your Raspberry Pi.
  6. It should be rebooting a few times.

After these steps you should be greeted with the new KODI logo.


Kodi start screen

And you’re done, its really easy as a Pi 😉