Internet of Things (IoT) for Developers

Agenda

•What is IoT, really•First Look at Arduino•Adding Sensors to Arduino•Getting Data to the Cloud

Speakers

•Abhishek Kant •Vic Parmar

Abhishek.kant@telerik.com

A Telerik Survey

•The term ‘IoT’ is confusing• It’s an exciting space but it’s hard to prepare for•What’s working now?•You can make money with the Internet of Things … in the future•Android and Java are particularly popular as a platform and language•Security and privacy are top challenges

http://www.telerik.com/blogs/what-developers-think-about-iot

What is IoT

•Devices that connect to one another & interact using the internet

The Business of IoT

Idea Breadboarding

Manufacturing

• Top Segments:• Smart Home• Wearables• Sports/ Fitness• Automotive• Logistics• Healthcare

The Wild West of IoT

•Devices: • Arduino• Raspberry Pi• Intel Galileo/ Edison• Tessel• Spark• Beagleboard• …………..

• Communication Protocol: • HTTP• Xbee• MQTT• BLE• RFID

Arduino

•Simple Microcontroller•Programmed in C (called sketches)•Arduino IDE• Upload Sketch• Serial Monitor

•Runs in a loop

Microcontroller ATmega328

Operating Voltage 5V

Input Voltage (limits) 6-20V

Digital I/O Pins14 (of which 6 provide PWM output)

Analog Input Pins 6

DC Current per I/O Pin 40 mA

DC Current for 3.3V Pin 50 mA

Flash Memory32 KB (ATmega328) of which 0.5 KB used by bootloader

SRAM 2 KB (ATmega328)

EEPROM 1 KB (ATmega328)

Clock Speed 16 MHz

Anatomy of Sketch

•setup()•loop()•pinMode()•digitalWrite()•delay()•Libraries

Blinky

Adding a Temperature Sensor

•DHT 11• Simple Digital Temperature & Humidity Sensor

•Hardware Fritzing Diagram

My Digital ThermometerHardware + Sketch

IoT Architecture

Sensors

Arduino

Cloud

Gateway

Sending Readings to the Cloud

Sensor

Sensor Makes Data Available

Arduino

Sends data over USB serial

Gate

way

Node App: Reads data from serial & POSTs Data to Cloud

My Digital Thermometer – In Cloud

Hardware + Sketch

Monitoring Temperature from Phone

Latest Temperature on Phone

Thanks Abhishek.kant@telerik.com Phone: +91-124-4300987/996

Raspberry Pi

• IoT Gateway•Host Node Applications