PiHome – home automation done with Raspberry PI and Python

Presented at PyWaw Summit in Warsaw

Transcript

1. PiHome – home automation done with Raspberry PI and Python Wojciech Sznapka Head of Development @ Cherry Poland Twitter: @sznapka PyWaw Summit. Warsaw 2015
3. Features • Steering (switches): – Floor heating steering (on / off / delayed) – Hot water pump steering – Lights • Sensors: – Current temperature – Draw charts • History: – switches state – temperatures
4. Hardware • Raspberry PI B • Switches module (230V) controlled via Ethernet (ready-made board) • Dallas ds18b20 one wire temperature sensors • Bread-board and bunch of wires
8. Software • Raspbian – with GPIO modules – Supervisord – Apache + WSGI • Pihome-api – Python – Flask – JSON • PiHome – AngularJS as a SPA frontend – Twitter Bootstrap – optimized for mobile – Grunt, Bower, Yeoman • CLI tasks – Queue consumers – Celery tasks
9. Software • RabbitMQ – relay “store” requests (failover) • Celery - “delayed” on / off • MongoDB (hosted at compose.io) – history of sensors and switches • Memcached
11. Future • Predict time when user wants to use hot water* • More switches (door, window blinds) • Connect to alarm to know where users are (PIR sensors) * Machine learning
12. Lesson learned • Don't rely much on WiFi (have fallback / queue) • Don't play around with higher voltages unless you're pretty sure what're you doing... • Be prepared for frequent and random restarts • There plenty of ready made components, soldering is often last thing, if you want to get things fast
13. Thanks :-) https://github.com/wowo/pihome https://github.com/wowo/pihome-api wojciech.sznapka@cherrygroup.com