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A Node.js lib to abstract BLE (Bluetooth Low Energy) peripherals, uses noble
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sandeepmistry Update
correct case as per #26.
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examples - minor tweaks to #17 Mar 1, 2016
lib Expose stopScanning callback Feb 16, 2017
test Add disconnect listener in connect Aug 24, 2016
.gitignore Initial commit Feb 18, 2014 - version 1.4.1 Sep 17, 2016
LICENSE Initial commit Feb 18, 2014 Update Feb 21, 2017
index.js Add heart rate measument service Feb 27, 2016
package.json - version 1.4.1 Sep 17, 2016


A Node.js lib to abstract BLE (Bluetooth Low Energy) peripherals, using noble


npm install noble-device


Take a look at the Tethercell and unofficial LightBlue Bean devices for examples, but this is how you make a basic device:

var NobleDevice = require('noble-device');

var YOUR_THING_SERVICE_UUID = 'xxxxxxxxxxxxxxxxxxxxxxxx';
var YOUR_THING_NOTIFY_CHAR  = 'xxxxxxxxxxxxxxxxxxxxxxxx';
var YOUR_THING_READ_CHAR    = 'xxxxxxxxxxxxxxxxxxxxxxxx';
var YOUR_THING_WRITE_CHAR   = 'xxxxxxxxxxxxxxxxxxxxxxxx';

// then create your thing with the object pattern
var YourThing = function(peripheral) {
  // call nobles super constructor, peripheral);

  // setup or do anything else your module needs here

// tell Noble about the service uuid(s) your peripheral advertises (optional)

// and/or specify method to check peripheral (optional) = function(peripheral) {
  return (peripheral.advertisement.localName === 'My Thing\'s Name');

// inherit noble device
NobleDevice.Util.inherits(YourThing, NobleDevice);

// you can mixin other existing service classes here too,
// noble device provides battery and device information,
// add the ones your device provides
NobleDevice.Util.mixin(YourThing, NobleDevice.BatteryService);
NobleDevice.Util.mixin(YourThing, NobleDevice.DeviceInformationService);

// export your device
module.exports = YourThing;

Now to use YourThing you must use one of the discover functions documented below which will find your device(s) and pass instances of your object to their callback where you must call connectAndSetUp.

var YourThing = require('YourThing');

var id = '<your devices id>';
YourThing.discoverById(function(yourThingInstance) {

  // you can be notified of disconnects
  yourThingInstance.on('disconnect', function() {
    console.log('we got disconnected! :( ');

  // you'll need to call connect and set up
  yourThingInstance.connectAndSetUp(function(error) {
    console.log('were connected!');


It doesn't do much yet, let's go back and add to our Device definition (right before module.exports)

// you could send some data
YourThing.prototype.send = function(data, done) {
  this.writeDataCharacteristic(YOUR_THING_SERVICE_UUID, YOUR_THING_WRITE_CHAR, data, done);

// read some data
YourThing.prototype.receive = function(callback) {
  this.readDataCharacteristic(YOUR_THING_SERVICE_UUID, YOUR_THING_READ_CHAR, callback);

Now in our connect and setup we can:

    yourThing.send(new Buffer([0x00, 0x01]), function() {
      console.log('data sent');

    yourThing.receive(function(error, data) {
      console.log('got data: ' + data);

Optionally, if you need to do some device setup or close something down before disconnect, you can override those functions:

YourThing.prototype.connectAndSetup = function(callback) {, function(error) {
    // maybe notify on a characteristic ?
    this.notifyCharacteristic(YOUR_THING_SERVICE_UUID, YOUR_THING_NOTIFY_CHAR, true, this._onRead.bind(this), function(err) {

YourThing.prototype.onDisconnect = function() {
  // clean up ...

  // call super's onDisconnect;

Discovery API

Discover All

function onDiscover(yourThingInstance) {
  // called for all devices discovered


Stopping a Discover All


Discover a single device {
  // called for only the first device discovered

Stopping a Discover


Discover with Filter

YourThing.discoverWithFilter(function(device), {
  // filter callback for device,
  //   return true to stop discovering and choose device
  //   return false to continue discovery

  return true; // or false
}, function(yourThingInstance) {
  // called for only one device discovered that matches filter

Discover by ID

var id = " ... "; // id of device we want to discover

YourThing.discoverById(id, function(yourThingInstance) {
  // called for only one device discovered
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