Matrix LED

PeterWang

About this app

Matrix LED is a Bluetooth controller for compatible LED dot-matrix badges and displays.

Create and send:
- Text with multiple fonts, colors, and display effects
- Static images and animated GIFs
- DIY dot-matrix drawings
- Music-reactive spectrum effects using your phone's microphone

Designed for LED badge owners:
- Scan and connect nearby Bluetooth LED devices
- Adjust brightness, speed, orientation, and screen size
- Save recent devices and reconnect quickly
- Check and install the latest device firmware over the air
- Works without an account; your content stays on your device

Notes:
- A compatible LED matrix device is required to send content.
- Bluetooth and, on Android 11 and below, location permission are used only for device discovery.
- Microphone access is used only for the optional music spectrum feature. Audio is processed on-device and is not recorded or uploaded.
- No ads, no in-app purchases, and no account registration.

What’s new

Initial version, supports monochrome and full-color LED display panels.
Online upgrade available.