Javascript in Internet of things(IoT) space. Here the example is based on Arduino uno. Johnny Five, Node package used for this. It is based on Firmata Protocol. Arduino provides Firmata implementation along with its Arduino IDE. Prior to this, Arduino board should have firmata standard plus implementation written on it.

1. JS in Arduino
using Johnny Five
Raj Bharath Kannan
rajbharath rbrajbharath1

2. What makes Internet of
Things(IoT)
Collection of objects that can
• send/receive data
• respond to the input
• learn on the go and build its intelligence

3. Why Javascript in IoT?
Wonderful Community
🏘
🚀Easy Onboard for existing devs
🏘Established Eco System
🚥Event Driven

4. Some popular boards for JS
Tessel
Espruino
Raspberry pi

5. Johnny Five
• JS library
• For boards that can not run os/node on its own and
understands Firmata protocol
• Need node for executing Johnny 5 script

6. Architecture
Firmata Firmata
J5

7. var five = require("johnny-five");
var board = new five.Board();
// The board's pins will not be accessible until
// the board has reported that it is ready
board.on("ready", function() {
console.log("Ready!");
var led = new five.Led(12);
led.blink(500);
this.on('exit', function(){
led.off();
});
});

8. Links
• https://github.com/rwaldron/johnny-five
• http://firmata.org/wiki/Main_Page
• https://github.com/firmata/protocol
• http://johnny-five.io/api/