Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

MQTT on Raspberry Pi with node.js

4,155 views

Published on

Talk I gave at LNUG. Forgot to explain pub/sub vs. polling. never mind. You can look that up. This is about a research project around a new-build ecoHome.

Published in: Technology, Business

MQTT on Raspberry Pi with node.js

  1. 1. 28th August '13 LNUG 1 LNUG August 2013 IoT with node.js on Raspberry Pi @paul_tanner
  2. 2. 28th August '13 LNUG 2 IoT with node.js on RPi ● “Internet of Things” ● System approach ● Distributed system ● Protocols ● Current project ● Node goodness
  3. 3. 28th August '13 LNUG 3 Internet of Things ● Real-time control systems: ● Input Sensors; ● (Stateful) processing; ● Control actuators ● Internet connectivity
  4. 4. 28th August '13 LNUG 4 System approach out = in > T || out && in > -T
  5. 5. 28th August '13 LNUG 5 Distributed System
  6. 6. 28th August '13 LNUG 6 Distributed System
  7. 7. 28th August '13 LNUG 7 The Hardware RFM12Pi Arduino with Ethernet
  8. 8. 28th August '13 LNUG 8 Protocols ● MQTT for data transfer ● one standard pub/ sub ● lightweight :-) ● numerous implementations ● application-specific semantics ● REST for logging (and/ or puts but not gets) ● HTTP for remote control via browser
  9. 9. 28th August '13 LNUG 9 Current Project ecoHome demonstrator ● mostly autonomous ● numerous sensors ● controls heating, ventilation, shutters, lights ● RPi + Arduinos, talking MQTT ● Logging to Xively (for analysis) ● Local rules engine ● Admin app on local web server ● modules: MQTT.js; node-serialport, arduino client etc
  10. 10. 28th August '13 LNUG 10 Node.js goodness ● runs great on Rpi (after 6 hour build) ● support for sockets and REST ● node-mqtt works fine with mosquitto server ● node-serial enables device attachment ● ease of implementing engine, rules etc ● removes heavy lifting from Arduinos
  11. 11. 28th August '13 LNUG 11 Contact Thanks for Listening Paul Tanner @paul_tanner paul@virtual-techno.com www.slideshare.com/paul_tanner 01494 581979

×