nRF24 Wireless LED Box Provides a Little Extra Security and Light Around Your Property

To guard your home or property against intruders, and/or as a fun electronics experiment, why not implement an array of 25 LEDs along with a half-dozen beeping speakers? This nRF24 Wireless LED Box by Khang Nguyen does just that, communicating with a separate controller via an nRF24 radio link. As shown in the video below, it does indeed look quite unnerving, combining bright lights with a sort of robotic bleeping noise as it cycles through the lights.

The build is controlled by an Arduino Uno, with quite a bit of wiring inside of a purchased project box. LEDs, plus six small speakers, are held in a 3D-printed fixture attached to its front. The assembly can be powered by a 9V battery, or plugged in for longer-term usage.

While an interesting unit on its own, Nguyen notes that the nRF24 module allows it to be used for much more than a remotely-triggered beacon. With two-way communication, it could be programmed to send feedback to the base unit for motion sensing, or other dangers like smoke or carbon monoxide. An array of such devices could help narrow down where a threat exists. These possibilities would of course mean a variety of system hardware and software upgrades, perfect inspiration for the next project!