# Light Crystals Sound-Reactive LED Art Kit

**Type:** Product page · **SKU:** CE10047 · **Brand:** [Unexpected Maker](https://core-electronics.com.au/brands/unexpected-maker)
**Page:** https://core-electronics.com.au/light-crystals-sound-reactive-led-art-kit-unexpected-maker.html ([markdown](https://core-electronics.com.au/light-crystals-sound-reactive-led-art-kit-unexpected-maker.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: Light Kit.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/Light%20Kit

## Description

Discover a revolutionary way to blend art, technology, and sound with the Light Crystals Sound-Reactive LED Art Kit. This innovative display combines a stunning 9x9 RGB LED matrix with precision-cut clear acrylic crystals to create mesmerising visual displays that respond dynamically to ambient sound. Perfect for creating engaging interactive installations, educational demonstrations, or sophisticated ambient lighting solutions.

## Key Features

- Custom 9x9 RGB LED matrix with crystal-clear acrylic overlay for enhanced visual effects
- Built-in MEMS microphone for precise sound reactivity
- Powerful ESP32-S3 dual-core processor with WiFi and Bluetooth capabilities
- Pre-assembled PCB requiring no soldering
- Expandable through Stemma/QT connector for additional functionality
- USB-C connectivity with built-in LiPo battery charging capability
- Elegant matte black acrylic and 3D-printed case design
 
## Technical Specifications

- Processor: 32-bit Dual Core 240MHz
- Wireless: 2.4GHz WiFi (802.11b/g/n) with 3D High Gain Antenna
- Bluetooth: Version 5 with BLE + Mesh support
- Memory: 8MB QSPI Flash + 2MB Extra QSPI PSRAM
- Power: USB-C with 5V detection and LiPo battery support
- Protection: ESD protection on USB and buttons
 
## How to Use

Light Crystals arrives with pre-loaded sound-reactive firmware, enabling immediate use upon assembly. The kit includes comprehensive assembly instructions and can be enhanced with additional features through the provided GitHub repository. For optimal visual effects, consider pairing with the [Adafruit Black LED Diffusion Acrylic Panel](https://core-electronics.com.au/black-led-diffusion-acrylic-panel-12-x-12-0-1-2-6mm-thick.html) for enhanced display clarity.

### Popular Applications

- Interactive sound visualisation displays
- IoT notification systems using MQTT or ESP-NOW
- Educational demonstrations of audio processing
- Ambient lighting for relaxation spaces
- Custom animated displays for exhibitions
 
## What's in the Box

- Pre-assembled PCB with OMGS3 board
- Pre-cut acrylic crystal pieces
- 3D printed base (PET-G material)
- Complete set of screws and standoffs
- Assembly instructions
 
## Compatibility

The Light Crystals kit is compatible with various development environments including Arduino IDE and ESP-IDF. It supports WLED with Audio Reactive usermod and can be integrated with standard automation protocols like MQTT. For enhanced projects, it pairs seamlessly with [DFRobot 5V RGB Programmable LED Strip](https://core-electronics.com.au/5v-rgb-programmable-led-strip-50cm.html) for expanded lighting capabilities.

## Additional Resources

- Complete source code available on the Light Crystals GitHub repository
- Pre-built WLED binary with Audio Reactive usermod
- Detailed assembly video guide
- Online documentation and example projects
 
## About Unexpected Maker

Unexpected Maker specialises in creating innovative, high-quality electronic products for the maker community. Their designs focus on combining functionality with aesthetic appeal, producing solutions that are both technically sophisticated and visually striking. The company maintains strong ties with the open-source community, providing comprehensive documentation and support for their products.

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/C/E/CE010047-1.jpg)