Getting Started with the Internet of Things - Allianz Hackrisk Hackathon 29/5/15 #IoT
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The document discusses the Internet of Things (IoT) by defining what IoT is, how it works, and where it is used. It provides examples of IoT hardware kits, code snippets for connecting sensors and devices to an IoT platform, and diagrams illustrating IoT architecture. The document also offers resources and tips for developing IoT solutions using tools from the SmartLiving IoT platform.
![Arduino - setup
void setup()
{
pinMode(ledPin, OUTPUT); // initialize the digital pin as an output.
Serial.begin(9600); // init serial link for debugging
byte mac[] = {0x90, 0xA2, 0xDA, 0x0D, 0xE1, 0x3E}; // Adapt to your Arduino MAC Address
if (Ethernet.begin(mac) == 0) // Initialize the Ethernet connection:
{
Serial.println(F("DHCP failed,end"));
while(true); //we failed to connect, halt execution here.
}
delay(1000); //give the Ethernet shield a second to initialize:
if(Device.Connect(ðClient, httpServer)) //connect the device with the IOT platform.
{
Device.AddAsset(knobPin, "Potentiometer", "A rotary sensor pot",false, "int"); //pin, name, desc, assetType, dataPro
Device.AddAsset(ledPin, "LED", "A blinky light emitting diode", true, "bool"); //pin, name, desc, assetType, dataPro
Device.Subscribe(pubSub);
}
}](https://image.slidesharecdn.com/hackrisk-150530140223-lva1-app6891/85/Getting-Started-with-the-Internet-of-Things-Allianz-Hackrisk-Hackathon-29-5-15-IoT-17-320.jpg)
![Arduino - actuator callback
void callback(char* topic, byte* payload, unsigned int length)
{
String msgString;
{
char message_buff[length + 1];
strncpy(message_buff, (char*)payload, length);
message_buff[length] = '0';
msgString = String(message_buff);
}
int* idOut = NULL;
{
int pinNr = Device.GetPinNr(topic, strlen(topic)); //Find what topic hooks to the pin
if (pinNr == ledPin)
{
if (msgString == "false") {
digitalWrite(ledPin, LOW); //led off
idOut = &ledPin;
}
else if (msgString == "true") {
digitalWrite(ledPin, HIGH); //led on
idOut = &ledPin;
}
}
}
Device.Send(msgString, *idOut); //Acknowledges the LED was activated and confirm in the user interface
}](https://image.slidesharecdn.com/hackrisk-150530140223-lva1-app6891/85/Getting-Started-with-the-Internet-of-Things-Allianz-Hackrisk-Hackathon-29-5-15-IoT-19-320.jpg)
Getting Started with the Internet of Things - Allianz Hackrisk Hackathon 29/5/15 #IoT
- 1. Westminster Impact Hub London, UK. 29/5/2015 Hack Risk Allianz Hackathon Getting started with the Internet of Things Tom Collins @snillocmot
- 2. What is IoT? An extension of the traditional web providing intelligent features through embedded computing, which allows dumb objects to autonomously react, inform and learn from the context of Humans and Things
- 3. How is IoT? The convergence of cheaper and accessible cloud, network and processing power, with smaller and smarter computers and a variety of hardware I/O sources
- 7. By 2020... $7.1 trillion market value 50 billion connected devices 30 million every day 1 in 3 ‘knowledge workers’ will be replaced by a digital workforce and smart machines
- 8. Why IoT? To improve quality of life and drive new business through connecting physical, cyber and social domains
- 11. Problems Millions of apps Still stuck in remote control mode Siloed solutions (An API doesn’t make it IoT) Big innovation captures the consumers eye, but not enough immediate ROI for business to adopt
- 12. SmartLiving IoT Starter Kit A Computer (Arduino Ethernet, Intel Edison or Raspberry PI) & Grove shield A bunch of sensors and actuators ● Button ● Blue LED (5mm) ● Rotary Angle Sensor (P) ● Light Sensor (P) ● Vibration Motor ● Temperature Sensor ● Infrared receiver ● Infrared emitter ● LED Bar ● PIR Motion sensor Check out the kits at http://www.smartliving.io/kits
- 13. Examples TCP/IP, MQTT, IPv6, CoAP, REST, XBEE, ZigBee, ZWave, Serial, custom radios, IPoAC, etc CONNECTIVITY Landscape END POINTS aka Things MIDDLEWARE router gateways fog services cloud bridges brokers Examples OpenHAB, TheThingSystem, ZIPR, Dowse, Ponte, WebSphere, RabbitMQ, Dweet IOT SERVICES SmartLiving IFTTT Xively TempoIQ InitialState Waylay.io Millions of other single use services... Examples Persistence, (E.g TempoIQ), automation (E.g IFTTT), intelligence, third party integrators (ERP connectors) APPS Companion apps Widgiots Freeboard Node red Wyliodrin Examples WidgIoTs, SmartLiving Web & Mobile Apps, Freeboard Custom RF
- 14. END POINTS aka Things CONNECTIVITY MIDDLEWARE IOT SERVICES APPS LED POT Arduino DBBroker Manage Widget Rules Blinking IoT Led Trusty Ethernet cable Potentiometer Sensor Code Device.Send(String(potRead), pot); //Reads and sends pot LED Actuator code if (command == "false") { digitalWrite(led, LOW); //Turns LED off } else if (command == "true") { digitalWrite(led, HIGH); //Turns LED on } SmartLiving API’s httpServer = "api.smartliving.io"; mqttServer = "broker.smartliving.io"; Automation Rule When Arduino.pot > 500 Then Arduino.led = true Else Arduino.led = false
- 15. SmartLiving Toolbox END POINTS CONNECTIVITY MIDDLEWARE IOT SERVICES APPS Arduino Raspberr y Pi Android Makers App Virtual actuator Virtual sensors iOS App Web app Widgets ZWave Devices SolutionsDevTools C Lib Android Gateway Arduino Gateway PUBSUB Clients REST Clients Raspberry Pi Makers Gateway Management Telemetry DB Rule Engine Automation Scripting Rule Wizard SERIALTCP/IP ZWAVE XBEE Python Lib JS Lib Widget Lib Node.js Lib Go Lib 433 Mhz IR!!? Polymer Widgets Web Services ZigBee Custom microco ntrollers Java Lib Plenty of existing resources here SmartLiving pub:sub Broker ZWave IPv6 Gateway
- 16. Library & API’S Endpoints (Hardware and libs) Arduino/C Python Node.js C# Javascript (HTML5-browser-as-a-sensor) Middleware Python Gateway C++ Gateway XBee Gateway IOT Services REST API - Gateway, Device, Asset, Rules, Users Telemetry API - Sensor data, actuator commands Automation rules, scripting & API Apps Javascript Widgets
- 17. Arduino - setup void setup() { pinMode(ledPin, OUTPUT); // initialize the digital pin as an output. Serial.begin(9600); // init serial link for debugging byte mac[] = {0x90, 0xA2, 0xDA, 0x0D, 0xE1, 0x3E}; // Adapt to your Arduino MAC Address if (Ethernet.begin(mac) == 0) // Initialize the Ethernet connection: { Serial.println(F("DHCP failed,end")); while(true); //we failed to connect, halt execution here. } delay(1000); //give the Ethernet shield a second to initialize: if(Device.Connect(ðClient, httpServer)) //connect the device with the IOT platform. { Device.AddAsset(knobPin, "Potentiometer", "A rotary sensor pot",false, "int"); //pin, name, desc, assetType, dataPro Device.AddAsset(ledPin, "LED", "A blinky light emitting diode", true, "bool"); //pin, name, desc, assetType, dataPro Device.Subscribe(pubSub); } }
- 18. Arduino - sensor read loop void loop() { unsigned long curTime = millis(); if (curTime > (time + 1000)) // publish light reading every 5 seconds to sensor 1 { unsigned int lightRead = analogRead(knobPin); // read from light sensor (photocell) if(prevVal != lightRead){ Device.Send(String(lightRead), knobPin); prevVal = lightRead; } time = curTime; } Device.Process(); }
- 19. Arduino - actuator callback void callback(char* topic, byte* payload, unsigned int length) { String msgString; { char message_buff[length + 1]; strncpy(message_buff, (char*)payload, length); message_buff[length] = '0'; msgString = String(message_buff); } int* idOut = NULL; { int pinNr = Device.GetPinNr(topic, strlen(topic)); //Find what topic hooks to the pin if (pinNr == ledPin) { if (msgString == "false") { digitalWrite(ledPin, LOW); //led off idOut = &ledPin; } else if (msgString == "true") { digitalWrite(ledPin, HIGH); //led on idOut = &ledPin; } } } Device.Send(msgString, *idOut); //Acknowledges the LED was activated and confirm in the user interface }
- 20. Python Pi - Summary IOT.connect() IOT.addAsset(knobPin, sensorName, "Push button", False, "int") IOT.addAsset(ledPin, actuatorName, "Light Emitting Diode", True, "bool") IOT.subscribe() while True: try: if grovepi.digitalRead(sensorPin) == 1: if sensorPrev == False: IOT.send("true", sensorPin) sensorPrev = True elif sensorPrev == True: IOT.send("false", sensorPin) sensorPrev = False sleep(.3)
- 21. Node.js - Summary var a0 = new mraa.Aio(0); //setup access analog input Analog pin #0 (A0) var d8 = new mraa.Gpio(8); //LED hooked up to digital pin 13 (or built in pin on Galileo Gen1 & Gen2) d8.dir(mraa.DIR_OUT); //set the gpio direction to output smartliving.addAsset("2", "Missile launcher", "Fires 10xD missiles at incoming spacecraft, and also a neat LED for some visual feedback...", true, "bool", confirmEnroll()); smartliving.addAsset("3", "Thermoreactor turbine temperature ", "Monitors the temperature of main alpha turbine", false, "int", confirmEnroll()); smartliving.subscribe(smartliving.baseMQTTUrl, 1883); vloop(); function vloop() { var analogValue = a0.read(); //read the value of the analog pin smartliving.send(analogValue, "3") setTimeout(vloop,1000); } smartliving.registerActuatorCallback("2", function() { d8.write(ledState?1:0); //if ledState is true then write a '1' (high) otherwise write a '0' (low) ledState = !ledState; //invert the ledState });
- 22. Rules FYI ● Rule wizard doesn’t support complex operators like &&, || ● Create a script and run it in the cloud if you need crazy logic
- 23. Hackathon Ethos Fake it, until you make it (literally) Hackathons always have network issues Hardware is normally limited or even shared Mock data is easy Things always go wrong Fancy UI elements always look good KISS, Hardware is Hard, Retrofit ● Nest is just a potentiometer, temp, PIR sensor ● GNL is just a LED & Push Button ● Hue is just a RGB ● Wemo is just a Relay MVP Mentality Build small think big (What’s the story behind your use case) High impact features first
- 24. Brainstorming IoT The problem - Short sharp sentence describing the story of your problem and how the solution solves it Topology diagram - Visualise what you’re going to build, show the inputs and outputs and use it to explain your idea THINGS - What are the dumb objects? END POINTS - What computers and sensors are need to make things smarter? DATA MODEL - What type of data will the Things produce? What are the inputs/outputs? MIDDLEWARE - How will devices communicate? one- one, one-many? AUTOMATION - When this event happens then do this event? UI - Mockups and wireframes HUMANS - Who are the most important people using the solution?
- 25. Resources Get your SmartLiving IoT Starter Kit www.smartliving.io/kits The platform beta.smartliving.io Documentation http://docs.smartliving.io/Get_Started GitHub https://github.com/allthingstalk API Reference http://allthingstalk.github.io/api-docs