Cylon.js is a JavaScript framework for robotics and physical computing built on top of Node.js.

It provides a simple, but powerful way to create solutions that incorporate multiple, different hardware devices concurrently.

Want to use Ruby on robots? Check out our sister project, Artoo.

Want to use Golang to power your robots? Check out our sister project, Gobot.

Build Status:

Examples

Arduino + LED

The below example connects to an Arduino over a serial connection, and blinks an LED once per second.

The example requires that the Arduino have the Firmata sketch installed; which can be obtained either through the Ardunio IDE or the cylon arduino upload firmata command available in cylon-cli.

var Cylon = require('cylon');

// define the robot
var robot = Cylon.robot({
  // change the port to the correct one for your Arduino
  connection: { name: 'arduino', adaptor: 'firmata', port: '/dev/ttyACM0' },
  device: { name: 'led', driver: 'led', pin: 13 },

  work: function(my) {
    every((1).second(), my.led.toggle);
  }
});

// connect to the Arduino and start working
robot.start();

Parrot ARDrone 2.0

var Cylon = require('cylon');

Cylon.robot({
  connection: { name: 'ardrone', adaptor: 'ardrone', port: '192.168.1.1' },
  device: { name: 'drone', driver: 'ardrone' },

  work: function(my) {
    my.drone.takeoff();
    after((10).seconds(), my.drone.land);
    after((15).seconds(), my.drone.stop);
  }
}).start();

Cat Toy (Leap Motion + Digispark + Servos)

var Cylon = require('../..');

Cylon.robot({
  connections: [
    { name: 'digispark', adaptor: 'digispark'},
    { name: 'leapmotion', adaptor: 'leapmotion', port: '127.0.0.1:6437' }
  ],

  devices: [
    {name: 'servo1', driver: 'servo', pin: 0, connection: 'digispark'},
    {name: 'servo2', driver: 'servo', pin: 1, connection: 'digispark'},
    {name: 'leapmotion', driver: 'leapmotion', connection: 'leapmotion'}
  ],

  work: function(my) {
    my['x'] = 90;
    my['z'] = 90;

    my.leapmotion.on('hand', function(hand) {
      my['x'] = hand.palmX.fromScale(-300, 300).toScale(30, 150);
      my['z'] = hand.palmZ.fromScale(-300, 300).toScale(30, 150);
    });

    every(100, function() {
      my.servo1.angle(my['x']);
      my.servo2.angle(my['z']);

      console.log("Current Angle: " + my.servo1.currentAngle() + ", " + my.servo2.currentAngle());
    });
  }
}).start();

Multiple Spheros + API Server

var Cylon = require('cylon');

// tell the API server to listen for requests at
// https://localhost:4000
Cylon.api({ port: 4000 });

var bots = [
  { port: '/dev/rfcomm0', name: 'Thelma' },
  { port: '/dev/rfcomm1', name: 'Louise' }
];

var SpheroBot = function() {};

SpheroBot.prototype.connection = { name: "sphero", adaptor: "sphero" };
SpheroBot.prototype.device = { name: "sphero", driver: "sphero" };

SpheroBot.prototype.work = function(my) {
  every((1).second(), function() {
    console.log(my.name);
    my.sphero.setRandomColor();
    my.sphero.roll(60, Math.floor(Math.random() * 360));
  });
};

for (var i = 0; i < bots.length; i++) {
  var bot = bots[i];
  var robot = new SpheroBot();

  robot.connection.port = bot.port;
  robot.name = bot.name;

  Cylon.robot(robot);
}

// start up all robots at once
Cylon.start();

Hardware Support

Cylon.js has an extensible syntax for connecting to multiple, different hardware devices. The following platforms are currently supported:

• Ardrone <==> Adaptor/Drivers
• Arduino <==> Adaptor
• Beaglebone Black <==> Adaptor
• Crazyflie <==> Adaptor/Driver
• Digispark <==> Adaptor
• Joystick <==> Adaptor/Driver
• Keyboard <==> Adaptor/Driver
• Leap Motion <==> Adaptor/Driver
• Neurosky <==> Adaptor/Driver
• OpenCV <==> Adaptor/Drivers
• Pebble <==> Adaptor/Driver
• Rapiro <==> Adaptor/Driver
• Raspberry Pi <==> Adaptor
• Salesforce <==> Adaptor/Driver
• Skynet <==> Adaptor
• Spark <==> Adaptor
• Sphero <==> Adaptor/Driver
• Tessel <==> Adaptor/Driver

Our implementation of GPIO (General Purpose Input/Output) allows for a shared set of drivers supporting a number of devices:

• GPIO <=> Drivers
  • Analog Sensor
  • Button
  • Continuous Servo
  • IR Rangefinder
  • LED
  • MakeyButton
  • Motor
  • Maxbotix Ultrasonic Range Finder
  • Servo

Additionally, we also support a number of I2C (Inter-Integrated Circuit) devices through a shared cylon-i2c module:

• I2C <=> Drivers
  • BlinkM
  • BMP180
  • HMC6352 Digital Compass
  • LCD
  • MPL115A2 Barometer/Thermometer
  • MPU6050

We'll also have many more platforms and drivers coming soon, follow us on Twitter for updates.

Getting Started

Installation

All you need to get started on a new robot is the cylon module:

npm install cylon

With the core module installed, now install the modules for whatever hardware support you need. For the Arduino + LED blink example, we'll need the 'firmata', 'gpio', and 'i2c' modules:

npm install cylon-firmata cylon-gpio cylon-i2c

CLI

Cylon has a Command-Line Interface counterpart in cylon-cli. This tool lets you access important features from the command line, and isn't dependent on Cylon itself. Check it out at https://github.com/hybridgroup/cylon-cli.

Documentation

We're busy adding documentation to our website, check it out at cylonjs.com/documentation.

If you want to help with documentation, you can find the code for our website at on the https://github.com/hybridgroup/cylon-site.

Contributing

• All patches must be provided under the Apache 2.0 License
• Please use the -s option in git to "sign off" that the commit is your work and you are providing it under the Apache 2.0 License
• Submit a Github Pull Request to the appropriate branch and ideally discuss the changes with us in IRC.
• We will look at the patch, test it out, and give you feedback.
• Avoid doing minor whitespace changes, renamings, etc. along with merged content. These will be done by the maintainers from time to time but they can complicate merges and should be done seperately.
• Take care to maintain the existing coding style.
• Add unit tests for any new or changed functionality & lint and test your code using make test and make lint.
• All pull requests should be "fast forward"
  • If there are commits after yours use “git rebase -i <new_head_branch>”
  • If you have local changes you may need to use “git stash”
  • For git help see progit which is an awesome (and free) book on git

Release History

Version 0.15.1 - Fixed issue with the API on Tessel

Version 0.15.0 - Better halting, cleaner startup, removed 'connect' and 'start' events, and misc other cleanups/refactors.

Version 0.14.0 - Removal of node-namespace and misc. cleanup

Version 0.13.3 - Fixes bug with disconnect functions not being called.

Version 0.13.2 - Use pure Express, adds server-sent-events, upd API.

Version 0.13.1 - Add API authentication and HTTPS support

Version 0.13.0 - Set minimum Node version to 0.10.20, add utils to global namespace and improve initialization routines

Version 0.12.0 - Extraction of CLI tooling

Version 0.11.2 - bugfixes

Version 0.11.0 - Refactor into pure JavaScript

Version 0.10.4 - Add JS helper functions

Version 0.10.3 - Fix dependency issue

Version 0.10.2 - Create connections convenience vars, refactor config loading

Version 0.10.1 - Updates required for test driven robotics, update Robeaux version, bugfixes

Version 0.10.0 - Use Robeaux UX, add CLI commands for helping connect to devices, bugfixes

Version 0.9.0 - Add AngularJS web interface to API, extensible commands for CLI

Version 0.8.0 - Refactored Adaptor and Driver into proper base classes for easier authoring of new modules

Version 0.7.0 - cylon command for generating new adaptors, support code for better GPIO support, literate examples

Version 0.6.0 - API exposes robot commands, fixes issues in driver/adaptor init

Version 0.5.0 - Improve API, add GPIO support for reuse in adaptors

Version 0.4.0 - Refactor proxy in Cylon.Basestar, improve API

Version 0.3.0 - Improved Cylon.Basestar, and added API

Version 0.2.0 - Cylon.Basestar to help develop external adaptors/drivers

Version 0.1.0 - Initial release for ongoing development

License

Copyright (c) 2013-2014 The Hybrid Group. Licensed under the Apache 2.0 license.