Voice Controlled Home Automation in Ruby
summary
A working voice‑controlled TV remote uses Ruby on a Raspberry Pi to talk to a TiVo and a Sharp Aquos TV over their TCP protocols, with a web API built with Sinatra + EventMachine, voice handled by Alexa and AWS Lambda via a shell-out Ruby binary (Traveling Ruby), and commands queued through an SQS queue to the Pi. The demo actually changes channels, sets volume, mutes and powers off; author notes 25,000 skills and 15 million devices and handles flaky TV volume state by polling.
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chapters (10)
- 0:00Voice-controlled home automation
- 1:05Web-based TV remote in Ruby
- 8:54TiVo and TV TCP protocols
- 14:43Amazon Echo and Alexa
- 18:26Alexa skills and voice services
- 22:22Ruby in AWS Lambda for Alexa
- 26:44Interaction model for voice commands
- 30:06Lambda to Raspberry Pi messages
- 33:41TV control skill in Ruby
- 37:18Live demo: voice-controlled TV
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