DSTIKE Christmas Tree MP3 — ESP32-WROOM-DA

Open-Source MP3 Player, Bluetooth Speaker and Functional PCB Art

DSTIKE Christmas Tree MP3 is a fully functional, open-source music player built in the shape of a Christmas tree.

At the top of the board, an ESP32-WROOM-DA-N16 dual-antenna module forms the “star.” A 1.54-inch IPS display, addressable RGB LEDs, dedicated I2S audio hardware and a built-in speaker turn the PCB into an interactive holiday decoration for makers, developers and electronics enthusiasts.

The device arrives fully assembled with a 1000mAh rechargeable battery and an SD card, ready for music playback after charging.

Limited ESP32-WROOM-DA Edition

The ESP32-WROOM-DA module has officially reached End of Life and is no longer recommended for new production designs.

This edition was created as a functional tribute to its distinctive dual-antenna design. Production is limited by the remaining supply of original ESP32-WROOM-DA-N16 modules. Once the available stock has been used, this exact hardware edition will not be reproduced.

“EOL” refers to the production status of the ESP32-WROOM-DA module. It does not mean that the product is used, defective or non-functional.

Two Playback Modes

SD Card MP3 Player

Play compatible MP3 files directly from the included SD card.

The card is preloaded with royalty-free holiday music, so the device can be used without connecting it to a phone. You can also replace the included tracks with your own compatible audio files.

Bluetooth Speaker

Switch to Bluetooth mode and use the Christmas Tree MP3 as a wireless speaker for a compatible phone, tablet or computer.

Bluetooth range and connection stability depend on the connected device, nearby wireless activity and the surrounding environment.

Music-Reactive RGB Lighting

Addressable WS2812B RGB LEDs are arranged across the tree-shaped PCB and can display colorful lighting effects while music plays.

The LEDs work together with the on-screen spectrum visualization to create a compact audio-visual display. Because the project is open source, developers can modify the lighting patterns, colors and animation behavior.

1.54-Inch IPS Display

The onboard color display provides a standalone interface for information such as:

• Playback mode

• Track information

• Volume level

• Operating status

• Audio spectrum visualization

• Custom graphics and interfaces

Displayed information may vary depending on the installed firmware version and audio-file metadata.

Dedicated I2S Audio Hardware

Unlike decorative PCB projects that use a small buzzer, this device includes dedicated I2S audio hardware and a speaker for real music playback.

It can be used as:

• A standalone MP3 player

• A compact Bluetooth speaker

• An interactive Christmas decoration

• An ESP32 audio-development platform

• A programmable RGB lighting project

• A functional gift for makers and engineers

Physical Controls

The onboard controls provide direct operation without requiring a phone in SD card mode.

Controls include:

• Volume Up

• Volume Down

• Previous Track

• Next Track

• Play control

• Playback-mode switch

• Reset button

Control behavior may change if custom firmware is installed.

Open-Source and Reprogrammable

This product is designed as both a finished device and a learning platform.

The included SD card contains the source code and circuit schematic, allowing developers to study and modify:

• ESP32 programming

• SD card audio playback

• Bluetooth audio

• I2S audio output

• WS2812B RGB LED control

• IPS display interfaces

• Button and switch input

• Battery-powered embedded design

You can modify the lighting effects, interface, playback behavior or add your own features.

Flashing custom firmware will overwrite the installed program. Back up the original files and confirm the correct board configuration before uploading new firmware.

Technical Specifications

• Main controller: ESP32-WROOM-DA-N16

• Flash memory: 16MB

• Wireless connectivity: 2.4 GHz Wi-Fi and Bluetooth

• Display: 1.54-inch IPS color screen

• Audio: I2S audio hardware with onboard speaker

• Storage: SD card slot

• SD card: Included

• Lighting: WS2812B addressable RGB LEDs

• Battery: Built-in 1000mAh rechargeable lithium-polymer battery

• Power and charging: 5V through the USB-A connection

• Controls: Five navigation buttons

• Additional controls: Mode switch and reset button

• Assembly: Fully assembled

• Development resources: Source code and schematic included

Actual battery runtime depends on speaker volume, display brightness, LED effects, playback mode and Bluetooth activity.

PCB Design

The exposed green PCB forms the body of the Christmas tree and features decorative snowflake artwork.

The dual-antenna shape of the ESP32-WROOM-DA module is incorporated into the top of the design, while the RGB LEDs act as programmable tree lights. The included 3D-printed stand allows the board to be displayed upright on a desk, shelf or workbench.

Package Contents

• 1 × DSTIKE Christmas Tree MP3

• 1 × Pre-installed 1000mAh rechargeable battery

• 1 × SD card with royalty-free music, source code and schematic

• 1 × 3D-printed display stand

Important Notes

• Charge the battery before first use.

• Use a stable 5V USB power source for charging.

• Do not charge the device unattended.

• Disconnect power if the battery or circuit becomes unusually hot.

• Keep the exposed circuit board away from water, metal objects and conductive surfaces.

• Do not use the device if the battery is swollen, damaged or leaking.

• Audio-file compatibility and displayed track information depend on file format and metadata.

• Custom firmware changes are performed at the user’s own risk.

• This is an exposed-board electronics product and is not intended as a toy.

A Functional Collectible for ESP32 Makers

DSTIKE Christmas Tree MP3 combines music playback, Bluetooth audio, RGB lighting, open-source development and distinctive PCB design in one finished device.

It is suitable for ESP32 collectors, embedded developers, electronics students and anyone looking for a holiday decoration that can be programmed, studied and enjoyed throughout the year.