This document discusses how web applications and internet of things (IoT) devices can be used to control devices remotely. It provides an overview of the Arduino platform and ESP8266 microcontroller for building IoT projects, and demonstrates how to use the aRest library to send commands via REST calls to control digital pins and read sensor data. Finally, it outlines some example home automation projects and considerations for security and networking.

1. Web Applications That
Can Control The World
SETH ENGEN

2. ‣Computer Know How
‣Two decades developing
‣Electronics!
Me…

4. IoT…By The Numbers
2020 = 26 billion connected devices5 billion connected things this year2008 more OBJECTS than PEOPLE

5. ‣Company, project, and community
‣Open-source software / hardware
‣Microcontroller-based kits
Arduino

6. Building Blocks

7. Arduino Software (IDE)

8. Serial Monitor

9. ‣WiFi
‣Microcontroller
‣Firmware
ESP8266

10. ‣WiFi
‣Microcontroller
‣Firmware
‣USB-to-Serial
ESP8266 Thing Dev

11. ‣Temperature
‣Humidity
‣2 second readings
DHT22

12. ‣Up to 120VAC / 15A
‣Simple
‣Safe
PowerSwitch Tail II

13. ‣RESTful framework for Arduino
‣Marco Schwartz
‣arest.io and openhomeautomation.net
aRest

14. aRest: Interaction
//command
192.168.1.101/digital/6/0
//response
{
"message": "Pin D6 set to 1",
"id": "1",
"name": "esp8266",
"connected": true
}

15. ‣digitalWrite(), digitalRead()
‣analogWrite(), analogRead()
‣pinMode()
‣getVariable(), callFunction()
aRest Functions

19. Demo
CommandBox:
coldbox create app --installcoldbox
server start

20. ‣Static IP / Dynamic IP
‣Dynamic DNS Services
‣Port Forwarding
Router Setup

21. Port Forwarding

22. Network Communication
Internet
Router
Incoming: 11.12.13.14:9999
Outgoing: 192.168.1.7
arduino.local
or
something.com
http://11.12.13.14:9999/digital/7/1

23. ‣REST Security
‣Home Automation Hub
Security Considerations

24. ‣REST versus MQTT/PubSub
What’s Next

25. ‣Garage Door
‣Chest Freezer
‣Thermostat Integration
‣Power Monitoring
Project Ideas

26. ‣github.com/marcoschwartz/aREST
‣arest.io
‣github.com/marcoschwartz/aREST.js
‣openhomeautomation.net
‣github.com/engens
Resources

27. var speaker = {
name = 'Seth Engen',
company = 'Computer Know How',
email = 'engens@compknowhow.com',
twitter = '@engens',
skype = 'seth.engen',
github = 'engens',
facebook = 'sethengen',
website = 'compknowhow.com',
blog = 'compknowhow.com/blog'
}
Thank you!