Michael Dawson

December 2015

Home Automation with Nodeand MQTT

About Michael Dawson Loves the web and building software

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Senior Software Developer @ IBM22 years development experience10 years in runtime development

Contact me:

Michael_dawson@ca.ibm.comTwitter: @mhdawson1https://www.linkedin.com/pub/michael-dawson/2/128/605

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• Internet of Things (IoT) • network of physically connected devices (things)• devices provide data• devices can be controlled• https://en.wikipedia.org/wiki/Internet_of_Things

• MQTT (MQ Telemetry Transport)• lightweight publish/subscribe• small footprint• low bandwidth (minimum size is 2 bytes)• From http://mqtt.org/

• “MQTT is a machine-to-machine (M2M)/"Internet of Things" connectivity protocol”

Introduction

Async

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• Topics - series of topic levels separated by ‘/’

• Messages

• QoS 0 – best effort, 1 – deliver at least once, 2 – deliver exactly once

MQTT

house/alarm/statushouse/alarm/zone

house/camera/capturehouse/camera/newpicture

house/camera/+

FFFFF110002-1433990729.jpg

house/2262/1house/2262/2home/2272

house/2262/#

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• Security• deviceid/userid/password• TLS/Certificates

• Clients• https://www.npmjs.com/package/mqtt• Paho - http://www.eclipse.org/paho/

• Brokers• Mosca https://www.npmjs.com/package/mosca• Mosquitto - http://mosquitto.org/

• IoT Services – ex bluemix

MQTT

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• Approach • Glue devices together with MQTT• Control/Smarts in Node

• Open Source• https://github.com/mhdawson/HomeAlarm• https://github.com/mhdawson/PI433WirelessTXManager• https://github.com/mhdawson/PI433WirelessRecvManager• https://github.com/mhdawson/PIWebcamServer• https://github.com/mhdawson/PI433-RX-TX-Temp-board (Hardware)

• https://github.com/mhdawson/HouseDashboard• https://github.com/mhdawson/PILocalTemp

Home Automation with MQTT and Node

Home Automation with MQTT and Node - Alarm

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USB

433 MHz

docker

MQTT(mosquito)

docker

HTTP(apache2)

docker/bluemix

Alarm(Node)

SCP

Browser

HTTPs

HTTPs+

Websockets

MQTT+

SSL/TLS

PI443-TX

PI443-RX

PIWebcam

TwillioSMS

Node + MQTT =

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Receive

Send

Interacting with the Physical World

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RX

TX

Interacting with the Physical World

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zone=house/2262/1:3:front door

zone=house/2262/2:4:patio door

zone=house/2262/3:2:motion living

zone=house/2262/4:1:motion hall

zone=house/2262/5:5:fire

Interacting with the Physical World

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Notification and Reporting

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Notifications and Reporting - SMS

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Deploy your own for free

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Node Broker Webserver

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