Javascript & Internet of Things

When JS Meets IoT

https://goo.gl/q8KkYG

Arvind Ravulavaru

@arvindr21

Author: Learning Ionic, Learning Ionic II
(Advanced IoT with JavaScript)

Blog: The Jackal of Javascript

@work

Platform Architect / Founder

Agenda

What the IoT ?

In Simpler Terms :

Internet of Things is Quite old

Well... Nearly...
35 years old

The First IoT Device*

A Coke Machine at Carnegie Mellon University, in 1982
By four exercise challenged but ingenious graduate students, Mike Kazar, David Nichols, John Zsarnay, & Ivor Durham
So they could check from their desks if the machine was loaded with cold coke

Did You Know :
The first webpage was created in 1991

Another Early IoT Device

The Internet Toaster by John Romkey in 1989
Connected to the internet with TCP/IP
Controlled via Simple Networking Management Protocol Management Information Base (SNMP MIB)
One control to turn on/off

The Trojan Room Coffee Pot

Created by Quentin Stafford-Fraser and Paul Jardetzky in 1993
It was located in the 'Trojan Room' within the Computer Laboratory of the University of Cambridge
It used to monitor the pot levels with an image being updated about 3x a minute and sent to the buildings server

Laziness is the Mother of Invention!

IoT In the Real World

Healthcare

The Heart will notify The Hospital

Consumer IoT

"IoT Helps us keep our plants hydrated

and our baby butts dry"

- Sudha Jamthe,
IoT Disruptions

Wearables

The Smart Toilet (-)

Roombah...!!!

Garage Openers... What's new?

IIoT

The Toothpaste Factory (~)

Industrial IoT

The world's most misunderstood programming language

OR

Few Reasons!

Machine Precision

0.1 + 0.2 !== 0.3

undefined can be defined

var someVar;
alert(someVar == undefined); //evaluates true

undefined = "I'm not undefined!";
var someVar;
alert(someVar == undefined); //evaluates false!

Scope can be faked

var animal = 'dog';

function getAnimal(adjective) {
    console.log(adjective + ' ' + this.animal);
};

var myObj = {
    animal: 'camel'
};

getAnimal.call(myObj, 'lovely'); //logs 'lovely camel'

null is an object

console.log(typeof null); //logs 'object'

nan is a number

console.log(typeof NaN); //logs 'Number'
console.log(NaN === NaN); //evaluates false

Automatic globals

function f() { foo = 123 };
f();
console.log(foo); // logs 123

W.L.I.I.A.

Type Coercion

'' == '0'		//false
0 == ''			//true
0 == '0'		//true
false == 'false'	//false
false == '0'		//true
false == undefined	//false
false == null		//false
null == undefined	//false
" \t\r\n" == 0		//true

`(;)` optional?

What the...?

$ {} + [] // 0

$ {} + [] + '' // "0"

$ ({} + {}) // "[object Object][object Object]"

$ ({} + []) // "[object Object]"

$ Array(16).join() // ",,,,,,,,,,,,,,,"

$ Array(16).join().length // 15

$ 'js' - 1 // NaN

Callback Hell

All these problems & JS?

Here is Why?

JS JS everywhere..
Event Driven nature
One language all the way!
HUGE set of libraries and frameworks
ES6 is here!
Amazing community
It is free! :P

How do we IoTify?

IoT Reference Architecture

Where does JS fit in?

Hardware
Gateways - Hardware/Software
Server/Data Aggregators
Web Dashboards
Mobile Apps
Desktop Apps

Hardware

Gateways - Hardware

Gateways - Software

Server/Data Aggregators

Web Dashboards

Mobile Apps

Desktop Apps

Standards

Demo

arvind@theiotsuitcase.com