Light Crystals Sound-Reactive LED Art Kit

Retired Product

Replaced by: Light Kit

This product has been replaced by: Light Kit
This product is no longer available. This page is only for reference.

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 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 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.

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Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$7+ for Standard Post (typically 6+ business days, tracked)
$11+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

$12+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

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