DIY Smart Home Device Means No More Fumbling in the Dark

Smart home tech is on the rise, but cost or lack of specific functionality may give pause to prospective buyers. [Whiskey Tango Hotel] opted to design their own system using a Raspberry Pi and Bluetooth device connectivity. Combining two ubiquitous technologies provides a reliable proximity activation of handy functions upon one’s arrival home.

Electrical Wiring Diagram

The primary function is to turn on a strip of LEDs when [Whiskey Tango Hotel] gets home to avoid fumbling for the lights in the dark, and to turn them off after a set time. The Raspberry Pi and Bluetooth dongle detect when a specified discoverable Bluetooth device comes within range — in this case, an iPad — after some time away. This toggles the Pi’s GP10 outputs and connected switching relay while also logging the actions to the terminal and Google Drive via IFTTT.

[Whiskey Tango Hotel] has included their Python code and build steps at the end of their blog post to help save you some time should you start a similar project. Indeed, the Raspberry Pi + Bluetooth combo can be used to great effect in many different areas — like adding non-standard functionality to your vehicle’s stereo.

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