How to Build a Smart Garage Door Opener / Sensor for Under $100

on YouTube ↗58m

" summary

Builds a working garage-door controller and status sensor that wires a magnetic door sensor and a relay into a Raspberry Pi 3, uses Windows 10 IoT Core with a UWP background app to toggle the original wall button, and routes telemetry through Azure IoT Hub to an ASP.NET Core API plus Azure Function and Notification Hub for push alerts. Total parts cost is under $100. It reliably opens/closes and notifies, though real-world Wi‑Fi range requires a repeater.

AI-written summary · about

" chapters (13)

1. 0:00Start
2. 7:55Gpio Pins
3. 12:57Door Sensor
4. 15:12Programming
5. 17:13Initialize the Gpio Controller
6. 25:17Azure Iot Hub
7. 25:30Iot Hubs
8. 26:22Edge Processing
9. 27:31Cloud to Device
10. 28:20Direct Methods
11. 28:51Device Twins
12. 37:36All It Knows Is I Need To Notify the Hub the Hub Might Throw It Away the Hub Might Use It as Telemetry Data the Hub Might Then Do Something with It as We Saw and Pass It On So in Our Case if We Go Look at that Here's My Iot Hub Out and Azure We'Ll See a Couple of Things Out Here We Go Down and Look There We Go Iot Devices You Can See There's My Garage Alright There's My One Device That I'Ve Associated with this Hub and It's All Set Up and You Can See Over on the Right It Says Cloud-to-Device Messages
13. 39:31The Plus Side Is You Can Access those Using any of the Event Hub Libraries so if You'Re Already Sending and Receiving Lots of Data You Can Plug into those Event Hubs and You Can Read those Messages Now at the Bottom Again I'M Cheap So I'Ve Got One of the the Low-End Iot Hubs I'Ve Got One Other Custom Endpoint That I Can Add and that's Just Pointing to the Service Bus Queue Now as an Endpoint It Doesn't Really Do Anything but What Iot Hub Lets Me Do Is Set Up Routes

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