Intro to the Internet of Things, presented at Lafayette Tech meetup on Monday 10/28

1. Internet of
Things
Tim Kellogg
Software Engineer, Protocols
@kellogh

2. Telemetry
● tele○ Remote
● metry
○ Metrics

3. Trucking

4. Household Internet

5. Life Information

6. Augmented Reality

7. What is IoT?
A network of sensors and low power devices
connected through the internet to enrich our
lives and lower the cost of doing business.

8. Hardware Is Easy Now

9. Arduino
●
●
●
●
Circuits
Sensors
No soldering
Open source

10. Raspberry Pi
● Linux
● Low power consumption
● Standard components
○ USB
○ HDMI
○ Ethernet / IEEE 802.11
● Python

11. tINDIE

12. Protocols

13. Legacy Protocols
● Connectivity issues
○ Broken pipes, lost messages
● Security
● Low power consumption

14. Protocols: MQTT
● Message Queue
○ Publish/Subscribe
● Simple to implement
● 2-byte overhead

15. Protocols: MQTT
● QoS ensures delivery after reconnect
● Communication between client ID & broker
○ Survives reconnects
○ Zero to many recipients
● Last Will And Testament
○ Signal when a device disconnects

16. Protocols: CoAP
● Constrained Application Protocol
● Document transfer
○ Interoperable with HTTP
○ GET, PUT, POST, DELETE
● Very small

17. Protocols: CoAP
● Datagram based
○ UDP
○ SMS
● Forward to HTTP server via proxies
● Some messages require ACK, others not
● Message ordering performed in application

18. Mesh Networks
●
●
●
●
Completely decentralized
Low throughput
Low power
Highly fragmented (Zigbee)

19. 2lemetry
●
●
●
●
MQTT Broker
CoAP
Custom protocols
Rule Engine
○ Application Logic
○ Routing to web services
● Analytics

20. Challenges
●
●
●
●
Big Data & Analytics
Standards
Security
More things!

21. Thanks!
@kellogh
IoT AT&T Hackathon - Friday Nov 1
http://iothackboulder-eorg.eventbrite.com/