Droids, java script and web connected hardware
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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.
![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);
});](https://image.slidesharecdn.com/droidsjavascriptandwebconnectedhardware-150726132342-lva1-app6891/85/Droids-java-script-and-web-connected-hardware-28-320.jpg)
![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
//](https://image.slidesharecdn.com/droidsjavascriptandwebconnectedhardware-150726132342-lva1-app6891/85/Droids-java-script-and-web-connected-hardware-30-320.jpg)
![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;
}](https://image.slidesharecdn.com/droidsjavascriptandwebconnectedhardware-150726132342-lva1-app6891/85/Droids-java-script-and-web-connected-hardware-33-320.jpg)
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Droids, java script and web connected hardware
- 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 1. 2. 3.
- 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
- 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() { .. };
- 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) # # # # #
- 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) # # # # #
- 19. NODEBOTS HARDWARE Servos, Motors, ESCs, Stepper motors Accelerometers, Gyroscopes, Compasses, IMUs Temperature, Proxitimity, Pressure sensors LEDs, NeoPixels, Pixel matrices Switches, Joysticks, Buttons LCDs # # # # # #
- 20. INSTALLATION Board development environment (eg Arduino) Flash board with protocol (eg Firmata) npm install johnny-five Write code ... Make an awesome robot # # # # # #
- 21. EXAMPLES AND APPLICATIONS Glasses(C) |Image(CC)AndyGelme MatthewBergman
- 23. NODE SKIRT Skirt(C) |Image(CC)KassandraPerch MatthewBergman
- 25. THARP (OSC)dtex
- 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); });
- 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 //
- 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; }
- 36. NODEBOTS TONIGHT Arduino IDE - arduino.cc NodeJS installed npm install johnny-five github.com/jsconfcn/nodebots-session # # # #
- 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) # # # #
- 39. DROIDS, JAVASCRIPT AND WEB CONNECTED HARDWARE JSConf China, July 11, 2015 Andrew Fisher @ajfisher