node-fitbit-livedata

This project aims to getting livedata from Fitbit tracker

!!! CAUTION !!!

This is an UNOFFICIAL and EXPERIMENTAL module.

Using this module sometimes forcibly logs out from fitbit application on your mobile device.

Requirement

• Host Machine
  • macOS El Capitan
  • Windows10 Creators Update or later
  • Raspbian 4.9
• Runtime
  • node.js (v6 or later)
  • Java (v1.8.0 or later)
• Fitbit Account

• Fitbit Tracker(Device) registered in the above account

  • Supported Trackers are
  • Charge HR

  The following trackers are not supported yet.

  • Ionic

  The following trackers are not verified yet.
  # I don't have them

  • Charge 2
  • Alta HR
  • Blaze
  • Flyer
  • Flex 2
  • Surge
  • Charge
  • Flex
  • One
  • Zip
  • Ultra
  • Force
  • Aria 2

Remarks

for Mac

Using this module on macOS, you need to connect or sync the macOS and your tracker with the official application only once before using this module.

for Windows

Because of using noble-uwp (it's very useful !), the version of your windows has to be Creators Update or later.
And this module on Windows can't get heart rate from your trackers.

for Raspbian

If you want to get heart rate from your trackers, you need to comment out the line in node_modules/bleno/lib/hci-socket/bindings.js (bleno's issue)

for Trackers

Some trackers need to be set On or Auto about heart rate using FItbit app for a smartphone, and sync after that.

Install

Install as library

Do npm install(or npm i) in your project directory.

$ cd /path/to/your/project/
$ npm i fitbit-livedata

After npm install, you can see this module in dependencies of your package.json, the key is fitbit-livedata and the value is the path to node-fitbit-livedata.

$ cat /path/to/your/project/package.json
{
  "name": "<YOUR_`PROJECT_NAME>",
    :
  "dependencies": {
    "fitbit-livedata": "file:/path/to/node-fitbit-livedata"
  }
}

Install as CLI tool

$ npm i -g fitbit-livedata

Usage

Usage as library

import fitbit from 'fitbit-livedata';

fitbit.on('discover', (tracker) => {
  tracker.on('connecting', () => {
    console.log('connecting to the tracker');
  });
  tracker.on('openingSession', () => {
    console.log('start tracker session');
  });
  tracker.on('authenticating', () => {
    console.log('start tracker authentication process.');
  });
  tracker.on('sendAuth', () => {
    console.log('send authention infomation.');
  });
  tracker.on('authenticated', () => {
    console.log('finishing tracker authentication process...');
  });
  tracker.on('connected', () => {
    console.log('tracker is connected.');

    tracker.on('disconnected', () => {
      console.log('tracker is disconnected.');
      // if you want to re-connect automatically.
      tracker.connect();    
    });
  });
  tracker.on('data', (livedata) => {
    process.stdout.write(`${JSON.stringify(livedata)}\n`);
  });
  tracker.connect();
});
fitbit.on('error', (error) => {
  console.error(`${error}\n`);
  process.exit(1);
});

const accounts = [
  {
    username: fitbitUser1_Username,
    password: fitbitUser1_Password
  },
  {
    username: fitbitUser2_Username,
    password: fitbitUser2_Password
  },
//  :
];
const trackers = [];

accounts.reduce((prev, curr) => {
  return prev.then(() => {
    return new Promise((resolve) => {
      fitbit.getTrackers(curr)
        .then((trackerInfos) => {
          // login succeeded
          trackerInfos.forEach((trackerInfo) => {
            trackers.push(trackerInfo);
          });
          console.log(`${trackersInfos}\n`);
          resolve();
        })
        .catch((err) => {
          // login failed
          console.error(`login failed\n`);
          console.error(`${err}\n`);
          resolve();
        });
    });
  });
}, Promise.resolve()).then(() => {
  fitbit.scanTrackers(trackers);
});

Usage as CLI tool

$ fitbit-livedata -u <USERNAME> -p <PASSWORD>
{"device":{"name":"Charge HR","address":"XX:XX:XX:XX:XX:XX","serialNumber":"0123456789ab"},"livedata":{"time":"YYYY-MM-DDThh:mm:dd.sssZ","steps":5700,"distance":4024236,"calories":1220,"elevation":13,"veryActive":2,"heartRate":80}}
{"device":{"name":"Charge HR","address":"XX:XX:XX:XX:XX:XX","serialNumber":"0123456789ab"},"livedata":{"time":"YYYY-MM-DDThh:mm:dd.sssZ","steps":5700,"distance":4024236,"calories":1220,"elevation":13,"veryActive":2,"heartRate":82}}
 :

If you want to connect to only one tracker, add the tracker name( e.g. "Charge HR") with --trackername/-t option.

$ fitbit-livedata -u <USERNAME> -p <PASSWORD> -t "Charge HR"

Memo

Sequence Diagram between host, tracker and fitbit.com

Japanese memo on Qiita