Bringing JavaScript to the IoT Edge - Node + JS Interactive 2019

@JoeKarlsson1 Bringing JS to the IoT Edge A Gentle Introduction
to the Internet of Things @JoeKarlsson1

@JoeKarlsson1 Why does IoT Matter? Source: https://www.statista.com/statistics/471264/iot-number-of-connected-devices-worldwide/

@JoeKarlsson1

{ name: “Joe Karlsson”, company: “MongoDB”, title: [ “Developer Advocate”,
“Software Engineer” ], twitter: “@JoeKarlsson1”, twitch: “joe_karlsson”, website: “joekarlsson.com”, }

@JoeKarlsson1 MagicMirror^2 @JoeKarlsson1 https://magicmirror.builders/

@JoeKarlsson1 Moodlite @JoeKarlsson1 https://moodlite.co.uk/

@JoeKarlsson1 Before we get started… @JoeKarlsson1

@JoeKarlsson1 Thank you for coming! @JoeKarlsson1

@JoeKarlsson1 Who is this talk for? @JoeKarlsson1

@JoeKarlsson1

@JoeKarlsson1 How is this going to work? @JoeKarlsson1

@JoeKarlsson1 A quick audience poll @JoeKarlsson1

@JoeKarlsson1 IoT? @JoeKarlsson1

@JoeKarlsson1 JS? @JoeKarlsson1

@JoeKarlsson1 Want to follow along? @JoeKarlsson1 bit.ly/IoTandJS

@JoeKarlsson1 Agenda • Intro to IoT • Why JS &
IoT? • IoT data best practices • IoT Kitty Litter Box • The future of IoT @JoeKarlsson1

@JoeKarlsson1 What the heck is IoT? @JoeKarlsson1

@JoeKarlsson1 It’s just the internet, but with “things” on it
@JoeKarlsson1

@JoeKarlsson1 …so what is a “thing?” @JoeKarlsson1

@JoeKarlsson1 @JoeKarlsson1

@JoeKarlsson1 Smart Home Home Security Smart Appliances Smart Light Bulbs
Smart Outlets Nest Thermostat @JoeKarlsson1

@JoeKarlsson1 Wearables Smart Water Bottle Fitbit Breathing Sensor Smart Running
Shoes Lumo Run Shorts @JoeKarlsson1

@JoeKarlsson1 Automated Manufacturing Humidity Sensor Motion Sensor Remote Monitoring Smart
Delivery Temperature Sensor @JoeKarlsson1

@JoeKarlsson1

@JoeKarlsson1 A company is an association or collection of individuals,
whether natural persons, legal persons, or a mixture of both. Company members share a common purpose and unite in order to focus their various talents and organize their collectively available skills or resources to achieve specific, declared goals. Collect Devices and sensors collect data @JoeKarlsson1

whether natural persons, legal persons, or a mixture of both. Company members share a common purpose and unite in order to focus their various talents and organize their collectively available skills or resources to achieve specific, declared goals. Communicate Data and events sent through the network Data Center The Cloud Home Router @JoeKarlsson1

whether natural persons, legal persons, or a mixture of both. Company members share a common purpose and unite in order to focus their various talents and organize their collectively available skills or resources to achieve specific, declared goals. Analyze Computers analyzes the incoming data Run Reports Home Router Machine Learning View Reports @JoeKarlsson1

whether natural persons, legal persons, or a mixture of both. Company members share a common purpose and unite in order to focus their various talents and organize their collectively available skills or resources to achieve specific, declared goals. Act Taking action based on the data Send a notification Communicate with another machine Stream @JoeKarlsson1

@JoeKarlsson1 IoT and JS • Intro to IoT

@JoeKarlsson1 IoT and JS • Intro to IoT • Anything
with a internet enabled chip in it

with a internet enabled chip in it • IoT is exploding

@JoeKarlsson1 IoT + JS(?!) @JoeKarlsson1

@JoeKarlsson1 Why Node? 58 percent of respondents that identified as
IoT developers use Node Source: https://nodejs.org/en/blog/announcements/nodejs-foundation-survey/ @JoeKarlsson1

@JoeKarlsson1 JS is a great choice for new devs Other
low level programming languages can be difficult to develop @JoeKarlsson1

@JoeKarlsson1 Easy to update over a network @JoeKarlsson1

@JoeKarlsson1 The internet already speaks JS @JoeKarlsson1

@JoeKarlsson1 Tons of existing libraries, plugins and APIs @JoeKarlsson1

@JoeKarlsson1 Cylon.js Johnny-Five https://cylonjs.com/ http://johnny-five.io/ @JoeKarlsson1

@JoeKarlsson1 JS is great at handling event-driven apps @JoeKarlsson1

@JoeKarlsson1 It got dark in here @JoeKarlsson1

@JoeKarlsson1 Can you turn yourself on? @JoeKarlsson1

@JoeKarlsson1 I turned myself on @JoeKarlsson1

@JoeKarlsson1 Events reduce the cost of listening for the device
@JoeKarlsson1

@JoeKarlsson1 IoT and JS • Intro to IoT • Why
JS & IoT?

@JoeKarlsson1 IoT and JS • Intro to IoT • JS
& IoT(?!) • Most IoT Devs are Node devs

& IoT(?!) • Most IoT Devs are Node devs • JS is great for new devs

& IoT(?!) • Most IoT Devs are Node devs • JS is great for new devs • Easy to update over a network

& IoT(?!) • Most IoT Devs are Node devs • JS is great for new devs • Easy to update over a network • The internet already speaks JS

& IoT(?!) • Most IoT Devs are Node devs • JS is great for new devs • Easy to update over a network • The internet already speaks JS • Tons of great libraries

& IoT(?!) • Most IoT Devs are Node devs • JS is great for new devs • Easy to update over a network • The internet already speaks JS • Tons of great libraries • JS is event driven

@JoeKarlsson1 But what do we do with all that data?
@JoeKarlsson1

@JoeKarlsson1 Things to consider when choosing a DB @JoeKarlsson1

@JoeKarlsson1 @JoeKarlsson1 DB needs to ingest data quickly

@JoeKarlsson1 @JoeKarlsson1 Should be event driven

@JoeKarlsson1 @JoeKarlsson1 Flexible schema

@JoeKarlsson1 @JoeKarlsson1 Handles time series data

@JoeKarlsson1 I may be biased, but… @JoeKarlsson1

@JoeKarlsson1 MongoDB is a great choice @JoeKarlsson1

& IoT(?!) • IoT data best practices

& IoT(?!) • IoT data best practices • DB needs to ingest data quickly

& IoT(?!) • IoT data best practices • DB needs to ingest data quickly • DB should be event driven

& IoT(?!) • IoT data best practices • DB needs to ingest data quickly • DB should be event driven • Flexible schema

& IoT(?!) • IoT data best practices • DB needs to ingest data quickly • DB should be event driven • Flexible schema • Time series data works best

@JoeKarlsson1 Let’s jump into something *practical @JoeKarlsson1

@JoeKarlsson1 @JoeKarlsson1 IoT Kitty Litter Box

@JoeKarlsson1 I sprang for a midcentury modern kitty litter box.
@JoeKarlsson1

@JoeKarlsson1 @JoeKarlsson1 I know this is totally extra.

@JoeKarlsson1 OK, so it’s still a WIP, but let’s talk
about it @JoeKarlsson1

@JoeKarlsson1 Want to watch me make it? https://www.twitch.tv/mongodb @JoeKarlsson1

@JoeKarlsson1 @JoeKarlsson1 @JoeKarlsson1

@JoeKarlsson1 Raspberry Pi @JoeKarlsson1

@JoeKarlsson1 Small and amazingly capable, credit card size $35 computer
@JoeKarlsson1

@JoeKarlsson1 Install Node on your Pi Find tips here: https://www.losant.com/blog/how-to-install-nodejs-on-raspberry-pi
@JoeKarlsson1

@JoeKarlsson1 General Purpose Input/Output Pins [GPIO] Can be used to
interact in with the real world @JoeKarlsson1

@JoeKarlsson1 Output Pins Switches that the Raspberry Pi can turn
on or off @JoeKarlsson1

@JoeKarlsson1 Input Pins Switches that you can turn on or
off from the outside world @JoeKarlsson1

@JoeKarlsson1 Great Overview of the GPIO Pins on Wikipedia @JoeKarlsson1
Source: https://en.wikipedia.org/wiki/Raspberry_Pi#General_purpose_input-output_(GPIO)_connector

@JoeKarlsson1 Breadboard A breadboard is used for prototyping electronics @JoeKarlsson1

@JoeKarlsson1 Building a circuit

@JoeKarlsson1 @JoeKarlsson1 Code: http://bit.ly/IotKittyBox

@JoeKarlsson1 @JoeKarlsson1 The first step of any IoT project is
to make an LED blink

@JoeKarlsson1 var five = require("johnny-five"); var Raspi = require("raspi-io").RaspiIO; var
board = new five.Board({ io: new Raspi() }); board.on("ready", function() { var led = new five.Led("P1-13"); led.blink(); });

@JoeKarlsson1 Alright, let’s make a toilet @JoeKarlsson1

@JoeKarlsson1 @JoeKarlsson1 Maintenance Mode

@JoeKarlsson1 @JoeKarlsson1 Initialize Base Weight

@JoeKarlsson1 @JoeKarlsson1 Cat Detected

@JoeKarlsson1 @JoeKarlsson1 Reset new base weight

@JoeKarlsson1 @JoeKarlsson1 Wait for new event

@JoeKarlsson1 const { RaspiIO } = require('raspi-io'); const five =
require(‘johnny-five'); const board = new five.Board({ io: new RaspiIO(), }); let state = { isMaintenenceMode: false, }; board.on('ready', () => { const spdt = new five.Switch('GPIO16'); spdt.on('open', () => { state.isMaintenenceMode = true; }); spdt.on('close', () => { state.isMaintenenceMode = false; }); });

@JoeKarlsson1 The load cells… @JoeKarlsson1

@JoeKarlsson1 Couldn’t find support for my load cells with Johnny-Five,
so I had to get creative. @JoeKarlsson1

@JoeKarlsson1 import time import sys import RPi.GPIO as GPIO from
hx711 import HX711 while True: try: except (KeyboardInterrupt, SystemExit): cleanAndExit() hx = HX711(5, 6) hx.set_reading_format("MSB", "MSB") hx.set_reference_unit(1) hx.reset() hx.tare() def cleanAndExit(): print("Cleaning...") GPIO.cleanup() print("Bye!") sys.exit() val = hx.get_weight(5) print(val) hx.power_down() hx.power_up() time.sleep(0.1) loadCell.py

@JoeKarlsson1 const spawn = require('child_process').spawn; const process = spawn('python', ['./hx711py/scale.py'],
{ detached: true }); // Takes stdout data from script which executed // with arguments and send this data to res object process.stdout.on('data', data => { let currWeight = parseFloat(data); let avgWeight = updateAverageWeight(currWeight, recentsWeights); }); process.stderr.on('data', err => { console.error(err); }); process.on('close', (code) => { console.log(`child process exited with code ${code}`); });

@JoeKarlsson1 Connect our IoT app with the Node MongoDB Driver
@JoeKarlsson1 Want $200 in free credits? http://bit.ly/NodeJSInteractive

const MongoClient = require(‘mongodb').MongoClient; const uri = ‘mongodb+srv://joe:[email protected]/iot const client
= new MongoClient(uri, { useNewUrlParser: true }); client.connect(err => { const collection = client.db(‘IoT’).collection('toilets'); // perform actions on the collection object client.close(); }); @JoeKarlsson1

@JoeKarlsson1 IoT Time Series Schema @JoeKarlsson1 Want $200 in free
credits? http://bit.ly/NodeJSInteractive

{ "_id": { "$oid": "dskfjlk2j92121293901233" }, "timestamp_day": { "$date": {
"$numberLong": "1573854434214" } }, "type": "cat_in_box", "cat": { "name": "BMO", "weight": "200" }, "owner": "Joe Karlsson", "events": [ ] } IoT Time Series Schema { "timestamp_event": { "$date": { "$numberLong": "1573854435016" } }, "weight": { "$numberDouble": “15.593333333" } }, { "timestamp_event": { "$date": { "$numberLong": "1573854435824" } }, "weight": { "$numberDouble": "15.132222222" } }, { "timestamp_event": { "$date": { "$numberLong": "1573854436632" } }, “type”: “maintenance” } @JoeKarlsson1

@JoeKarlsson1 @JoeKarlsson1 Box Assembly

@JoeKarlsson1 • Hook up Stitch functions to send out weekly
email report @JoeKarlsson1 @TODO:

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • GPIO

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • GPIO • IoT “Hello World” var five = require("johnny-five"); var Raspi = require("raspi-io").RaspiIO; var board = new five.Board({ io: new Raspi() }); board.on("ready", function() { var led = new five.Led("P1-13"); led.blink(); });

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • GPIO • IoT “Hello World” • Switches and Load cells

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • GPIO • IoT “Hello World” • Switches and Load cells • Sent IoT data to the cloud

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • GPIO • IoT “Hello World” • Switches and Load cells • Sent IoT data to the cloud • Next steps…

@JoeKarlsson1 Smaller and more powerful devices \ Better Hardware support
JS with a smaller footprint Batteries will become the bottleneck The Future of JS + IoT? @JoeKarlsson1

@JoeKarlsson1 IoT and JS

@JoeKarlsson1 IoT and JS • Intro to IoT

with a internet enabled chip in it

with a internet enabled chip in it • IoT is exploding

& IoT(?!)

& IoT(?!) • Most IoT Devs are Node devs

& IoT(?!) • Most IoT Devs are Node devs • JS is great for new devs

& IoT(?!) • Most IoT Devs are Node devs • JS is great for new devs • Easy to update over a network

& IoT(?!) • Most IoT Devs are Node devs • JS is great for new devs • Easy to update over a network • The internet already speaks JS

& IoT(?!) • Most IoT Devs are Node devs • JS is great for new devs • Easy to update over a network • The internet already speaks JS • Tons of great libraries

& IoT(?!) • Most IoT Devs are Node devs • JS is great for new devs • Easy to update over a network • The internet already speaks JS • Tons of great libraries • JS is event driven

& IoT(?!) • IoT data best practices

& IoT(?!) • IoT data best practices • DB needs to ingest data quickly

& IoT(?!) • IoT data best practices • DB needs to ingest data quickly • DB should be event driven

& IoT(?!) • IoT data best practices • DB needs to ingest data quickly • DB should be event driven • Flexible schema

& IoT(?!) • IoT data best practices • DB needs to ingest data quickly • DB should be event driven • Flexible schema • Time series data works best

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • GPIO

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • GPIO • IoT “Hello World” var five = require("johnny-five"); var Raspi = require("raspi-io").RaspiIO; var board = new five.Board({ io: new Raspi() }); board.on("ready", function() { var led = new five.Led("P1-13"); led.blink(); });

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • GPIO • IoT “Hello World” • Switches and Load cells

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • GPIO • IoT “Hello World” • Switches and Load cells • Sent IoT data to the cloud

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • GPIO • IoT “Hello World” • Switches and Load cells • Sent IoT data to the cloud • Next steps…

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • The future of IoT

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • The future of IoT • Smaller and more powerful

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • The future of IoT • Smaller and more powerful • JS with a smaller footprint

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • The future of IoT • Smaller and more powerful • JS with a smaller footprint • Better hardware support

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • The future of IoT • Smaller and more powerful • JS with a smaller footprint • Better hardware support • Batteries are the bottleneck

& IoT(?!) • IoT data best practices • IoT Kitty Litter Box • The future of IoT

@JoeKarlsson1 Do you want to be an IoT and JS
master? @JoeKarlsson1

@JoeKarlsson1 Just do it! @JoeKarlsson1

@JoeKarlsson1 Questions? @JoeKarlsson1

@JoeKarlsson1 Thank You! @JoeKarlsson1

@JoeKarlsson1 All resources and links used in  this talk can
be found here: @JoeKarlsson1 bit.ly/IoTandJS

@JoeKarlsson1 Want $200 in FREE Atlas credits? @JoeKarlsson1 bit.ly/NodeJSInteractive

{ name: “Joe Karlsson”, company: “MongoDB”, title: [ “Developer Advocate”,
“Software Engineer” ], twitter: “@JoeKarlsson1”, twitch: “joe_karlsson”, website: “joekarlsson.com”, } bit.ly/IotKittyBox

@JoeKarlsson1 •Source Code - http://bit.ly/IotKittyBox • IoT Reference Architecture -
https:// www.mongodb.com/collateral/iot-reference- architecture •Time Series Data and MongoDB: Best Practices Guide - https://www.mongodb.com/ collateral/time-series-best-practices Additional Resources

@JoeKarlsson1

Bringing JavaScript to the IoT Edge - Node + JS Interactive 2019

Bringing JavaScript to the IoT Edge - Node + JS Interactive 2019

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