Internet of ThingsTim KelloggSoftware Engineer, Protocols@kellogh

Telemetry● tele-

○ Remote● metry

○ Metrics

Trucking

Household Internet

Life Information

Augmented Reality

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.

Hardware Is Easy Now

Arduino● Circuits● Sensors● No soldering● Open source

Raspberry Pi● Linux● Low power consumption● Standard components

○ USB○ HDMI○ Ethernet / IEEE 802.11

● Python

tINDIE

Protocols

Legacy Protocols● Connectivity issues

○ Broken pipes, lost messages● Security● Low power consumption

Protocols: MQTT● Message Queue

○ Publish/Subscribe● Simple to implement● 2-byte overhead

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

Protocols: CoAP● Constrained Application Protocol● Document transfer

○ Interoperable with HTTP○ GET, PUT, POST, DELETE

● Very small

Protocols: CoAP● Datagram based

○ UDP○ SMS

● Forward to HTTP server via proxies● Some messages require ACK, others not● Message ordering performed in application

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

2lemetry● MQTT Broker● CoAP● Custom protocols● Rule Engine

○ Application Logic○ Routing to web services

● Analytics

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

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