"Holiday lighting has long relied on repeated patterns and static effects, but this music-reactive LED Christmas tree brings a new dimension to seasonal decor by turning sound into visual effects. The project is a simple wooden frame with off-the-shelf LEDs and an audio sensor to create a festive display that animates in real time with sound. Built around an ESP32 microcontroller running the open-source WLED software, the assembly combines woodworking, basic electronics, and wireless configuration into a project that is both instructive and visually striking."
"The core of this DIY is an ESP32-D1 mini microcontroller, chosen for its built-in Wi-Fi, processing capability, and compatibility with WLED, a flexible lighting control platform. WLED runs on the ESP32 and provides a web-based interface for configuring LED lighting effects, colors, and patterns without requiring deep coding knowledge. In this tree, WLED's audio-reactive mode analyzes sound input and drives the LED effects so that the lights flash, pulse, and change in response to music playing nearby."
"Structurally, the tree is made from common materials. A wooden frame cut into the triangular silhouette of a Christmas tree serves as the backbone. Addressable WS2812B LED strips are mounted along this frame, arranged to expose each LED through a round opening in a corresponding ping-pong ball acting as the light diffuser. These balls soften and spread the light emitted by each LED, creating a uniform glow rather than pinpoint beams."
A music-reactive LED Christmas tree converts ambient sound into synchronized lighting effects using an ESP32 microcontroller running WLED. An INMP441 digital microphone captures audio and feeds WLED's audio-reactive mode to make LEDs flash, pulse, and change with music. The structure uses a triangular wooden frame with addressable WS2812B LED strips mounted behind ping-pong ball diffusers to create a uniform glow. A 3D-printed jig ensures consistent openings in the balls, which are glued in orderly rows. Electronics are assembled on a perfboard with soldered connections for the ESP32, microphone, power, and LED strips. Wi-Fi and the WLED web interface enable wireless configuration.
Read at Yanko Design - Modern Industrial Design News
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