Build a voice based smart home using Sinatra & mruby/c

on YouTube ↗29m

" summary

A voice‑controlled smart home that actually works: a Sinatra web endpoint receives Alexa intents, maps them to actions and publishes commands over cloud MQTT to an ESP32 microcontroller running mruby/c, which sends IR codes to a transmitter or moves a servo for a door lock. Claims include tiny mruby/c memory use (hundreds of KB vs ~16 MB for CRuby) and a round‑trip where Sinatra waits for the microcontroller acknowledgement before responding to Alexa. Demo shows lights and TV switching on.

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" chapters (11)

1. 0:00Start
2. 4:31What is mruby?
3. 6:50How it works?
4. 10:57Ups and downs
5. 13:03What is home-on-voice?
6. 18:04Why a microcontroller?
7. 19:06How Alexa communicates to Sinatra?
8. 24:00How Sinatra & microcontroller communicates in home-on-voice
9. 24:44How microcontroller communicates to
10. 25:35home appliances in home-on-voice
11. 28:22Conclusion

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