Given at JSConf China. Full notes are here: http://droidsjs.ajf.io Hardware is becoming more connected and with it is the ability to interact with in in new ways. Principle amongst this is the ability to use JavaScript and NodeJS specifically to be able to talk to hardware such as Arduinos, RaspBerry PIs and other embedded development boards. This talk discusses the JS Hardware stack and how to interact with it.

1. DROIDS, JAVASCRIPT AND WEB
CONNECTED HARDWARE
JSConf China, July 11, 2015
Andrew Fisher @ajfisher
Press'S'forfullspeakernotes.

2. JS ALL THE REAL THINGS
(CC)FlickrQuasimodo

3. HARDWARE IS BECOMING MORE LIKE SOFTWARE
(CC)PhilFarugia

4. TODO
Why use JS for robotics?
Introduction to the NodeBots stack
Applications and examples
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5. WHY USE JAVASCRIPT FOR ROBOTICS?
(CC)FlickrJohnGreenaway

6. JAVASCRIPT IS TOO DYNAMIC TO BE PRECISE...

7. REAL HARDWARE ENGINEERS USE C...

8. WEB APPS DESIGNED BY HARDWARE ENGINEERS

9. WHY USE JS AND HARDWARE?
(CC)FlickrOskay

10. EVENTEMITTER
Twitter:@nodebotanist

11. THE REAL WORLD IS ALL EVENTS
(CC)Flickrtxmx2

12. OBJECTS NEED STRUCTURE AND FLEXIBILITY
var motor = new Five.Motor();
motor.start();

13. PROTOTYPES ARE GREAT
var left_motor = new Five.motor({controller: 'I2C'});
var right_motor = new Five.motor({controller: 'PCA34567'});
left_motor.start();
right_motor.stop();
left_motor.prototype.double_speed = function() { .. };

14. JS <3 ROBOTICS
(CC)Flickrhiperbolica

15. THE NODEBOTS STACK

16. JOHNNY FIVE
(C)JoanneDaudier

17. THE STACK
Controller board (sensors and actuators)
IO Plugin (communications protocol)
Johnny Five / NodeJS (application logic)
WS/HTTP (networking and security protocols)
Clients (UI, input, visualisation)
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18. COMMON IMPLEMENTATION
Controller board (Arduino)
IO Plugin (Firmata over USB)
Johnny Five / NodeJS (application logic)
WS/HTTP (networking and security protocols)
Clients (UI, input, visualisation)
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19. NODEBOTS HARDWARE
Servos, Motors, ESCs, Stepper motors
Accelerometers, Gyroscopes, Compasses, IMUs
Temperature, Proxitimity, Pressure sensors
LEDs, NeoPixels, Pixel matrices
Switches, Joysticks, Buttons
LCDs
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20. INSTALLATION
Board development environment (eg Arduino)
Flash board with protocol (eg Firmata)
npm install johnny-five
Write code
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Make an awesome robot
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21. EXAMPLES AND APPLICATIONS
Glasses(C) |Image(CC)AndyGelme MatthewBergman

22. SIMPLEBOT
Simplebot(CC)AJFisher

23. NODE SKIRT
Skirt(C) |Image(CC)KassandraPerch MatthewBergman

24. TETRIS
(C)AdrianCatalan

25. THARP
(OSC)dtex

26. HELLO WORLD
(CC)FlickrDanielNovta

27. CIRCUIT

28. HARDWARE HELLO WORLD
var five = require("johnny-five");
if (process.argv[2] == null) {
console.log("You need to supply a device to connect to");
process.exit()
}
var board = five.Board({port: process.argv[2]});
board.on("ready", function() {
var led = new five.Led(10);
led.blink(500);
});

29. DEMONSTRATION
Imageoflivedemonstration.Code:led.js

30. WEB PAGE LED
var five = require("johnny-five");
if (process.argv[2] == null) {
console.log("Please supply a device to connect to");
process.exit();
}
// web server elements
var express = require('express');
var app = express();
var http = require('http');
var server = http.createServer(app);
var board;
//
//
// Set up the application server
//

31. WEB CONNECTED LIGHT
Imageoflivedemonstration.Code:webled.js

32. MBOT
(CC)AJFisher

33. MBOT DRIVE CODE
var five = require("johnny-five");
var max_speed_l = 150;
var max_speed_r = 140;
// set up the input
var stdin = process.openStdin();
require('tty').setRawMode(true);
var board = new five.Board({port: process.argv[2]});
var l_motor = r_motor = null;
board.on("ready", function(err) {
if (err){
console.log(err);
return;
}

34. DEMONSTRATION
Imageofalternativedemonstration.Code:mbot.js

35. LOOK FOR DROIDS
(CC)Flickr⣫⣤⣇⣤

36. NODEBOTS TONIGHT
Arduino IDE - arduino.cc
NodeJS installed
npm install johnny-five
github.com/jsconfcn/nodebots-session
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37. INTERNATIONAL NODEBOTS DAY
July 25, 2015
nodebotsday.com

38. RESOURCES
johnny-five.org
gitter.im/rwaldron/johnny-five
node-ardx.org
Make JS Robotics book (BOOKJSROBOTICS at MakerShed)
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39. DROIDS, JAVASCRIPT AND WEB
CONNECTED HARDWARE
JSConf China, July 11, 2015
Andrew Fisher @ajfisher