/blobbin

How to set up a Wii Fit with a Raspberry Pi to record your weight to the web.

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Blobbin

How to set up a Wii Fit with a Raspberry Pi to record your weight to the web. I am using a CanaKit: http://www.canakit.com/raspberry-pi-starter-kit.html

  1. Set up raspbian.
  2. Set up WiFi.
  3. sudo apt-get update && sudo apt-get upgrade
  4. sudo apt-get install bluez bluez-tools python-bluez python-gobject wminput

Set up the hardware with bluetooth.

This hack is based on the instructions at http://www.stavros.io/posts/your-weight-online/ I've added some Raspberry Pi specific build details. Also, this is updated to account for some minor changes to bluez. The gist is that you have to temporary replace your bluetooth stack with a version that's hacked up to send the correct keycode.

  1. Use sudo bluez-test-discovery or hcitool scan to get the address of the Wii Fit.
  2. Uninstall bluez with sudo apt-get remove bluez (or you can use dpkg -r).
  3. sudo apt-get install build-essential libdbus-1-dev check checkinstall libglib2.0-dev libudev-dev
  4. sudo nano /etc/apt/sources.list and uncomment the deb-src line.
  5. sudo apt-get update
  6. mkdir -p ~/src && cd ~/src && apt-get source bluez
  7. cd bluez-*
  8. ./configure --enable-test --prefix=/ --exec_prefix=/usr
  9. Hand edit pincode_cb in src/event.c like this: https://gist.github.com/bklimt/9f7b290d0a664b7a3567
  10. make
  11. sudo checkinstall --fstrans=no
  12. sudo service bluetooth restart
  13. Press the red button on your Wii Fit, then sudo ./test/simple-agent hci0 <your wii fit's address> && sudo wminput <your wii fit's address>
  14. For the pin, enter the numbers in your bluetooth adapter's (not the Wii Fit) address backwards with a dollar sign. For example, if your adapter's address is 00:1A:7D:DA:71:13, use pin code $1371da7d1a00. If you aren't sure of your apapter's address, one was to find it is ls /var/lib/bluetooth/.
  15. sudo bt-device —set <your wii fit's address> Trusted 1
  16. sudo dpkg -r bluez
  17. sudo apt-get install bluez
  18. Wait 3 days. Yeah, I don't know. It didn't work for me, and then I came back 3 days later and everything worked.

Get the python scripts and website code.

  1. Set up git access to github. https://help.github.com/articles/generating-ssh-keys/
  2. mkdir -p ~/src && cd ~/src
  3. git clone git@github.com:bklimt/blobbin.git

Set up the Parse app.

You can skip this step if you want to do something with the weights other than record them to the web. If so, you'll need to hack up the python scripts to do whatever you want them to do.

  1. Create an app on parse.com.
  2. Secure it by disabling client class creation, making a Weight class, adding a weight number field and a person string field to it, and making the class readonly.
  3. Download the parse cli.
  4. cd ~/src/blobbin/
  5. parse new to set the keys for the Parse app you want to deploy to.
  6. cd ./parse
  7. parse deploy

Configure the python script to listen.

  1. cd ~/src/blobbin/parse

  2. Edit the DEVICE variable in listen.py to use the address of your Wii Fit.

  3. Change the logic in storage.py to do whatever you want with the weights.

  4. Create the config for accessing Parse.

     $ cat >~/src/blobbin/config.py
 appId = "<Your App Id>"
 masterKey = "<Your Master Key>"
 ^D

  5. sudo python listen.py