Deo's LED Matrix ManagerYour Framework 16 LED matrices, managed from the tray.
Draw on both modules, pick a pattern, set the brightness, and forget about it. When you dock and close the lid, the LEDs fade out. Open it again and they come back.
Click or drag on the matrices to draw, just like in the app.
On a real Laptop 16
What it does
Both modules, side by side
A left and a right canvas, laid out the way the modules sit next to your keyboard. Modules are found automatically. No COM ports to pick, no browser permissions.
Draw in greyscale
Left-click to draw, right-click to erase, drag to paint. Set the brush brightness to anything from a faint glow to full white.
Animations that loop perfectly
Digital rain, fire, plasma, a DNA helix, a heartbeat and more. Each one returns exactly to its first frame, so there's never a jump. Simple downward scrolls run on the module itself with no work for your PC.
Text that fits, plus CRT effects
Type a word and it's fitted to the module, stacked, sideways or as a ticker, still or sliding. Add a retro scanline look, or show the time and battery with {time} and {battery}.
Patterns in one click
Checkerboards, diagonal lines, gradients, a diamond, zig-zag, scatter, and progress-bar percentages. Every pattern you pick can still be edited by hand.
Lives in the tray
Starts with Windows, stays out of the way, and uses almost no memory while the window is closed. The tray menu lets you keep the LEDs on or off whenever you want.
Remembers everything
Your drawings, brightness and module names come back after a restart, a sleep, or after you swap a module out.
Feels like Windows
Follows your light or dark mode and accent color, scales cleanly on any display, and works with the keyboard and screen readers.
It turns itself off when you're not looking
The app watches whether the laptop's own screen is in use. If it isn't, the LEDs fade out. Each rule can be switched off in the app.
| Situation | LEDs |
|---|---|
| Using the laptop normally | On |
| Docked to external monitors with the lid closed | Off |
| Lid open, but Windows set to "Second screen only" | Off |
| Extended or duplicated onto the laptop screen | On |
| Windows turns the screen off after inactivity | Off |
| PC locked (optional, off by default) | Off |
Install
Easiest: get it from the Microsoft Store. Microsoft signs it, it updates itself, and it works with Smart App Control on. Or use the installer from GitHub:
- Download the installer from the latest release.
- Run it. No admin rights are needed. It installs just for you.
The installer isn't code-signed yet, so Windows SmartScreen may warn you. Choose "More info", then "Run anyway". - Leave "Start automatically when I sign in" ticked if you want the LEDs managed from the moment you log in.
- Find the LED icon in the system tray. Click it to open the editor, right-click it for quick options.
Questions
It says a module is "in use by another app"
Only one program can talk to a module at a time. Close the ledmatrix.frame.work web page, Framework's inputmodule-control tool, or any other LED app, and the manager connects on its own within a few seconds.
My drawings show up on the wrong side
Press "Swap left / right" in the app. Use "Identify" to blink a module if you're not sure which one is which.
Why do the LEDs go dark on their own with other tools?
The module's firmware turns the LEDs off after 60 seconds without hearing from the computer. The manager sends a small signal every 30 seconds to keep them on, and stays silent when they're meant to be off.
Does it need the internet or collect any data?
No. It never connects to the network and sends nothing anywhere. See Privacy.
Can I uninstall it cleanly?
Yes, from Settings > Apps. The uninstaller removes the startup entry and asks whether to keep your saved drawings and settings.
Privacy
The app collects nothing and sends nothing. It never connects to the internet, and everything it saves stays on your PC.
What the app saves, on your PC only
- Your settings and drawings, in
%AppData%\DeoLedMatrixManager. - A log of warnings and errors, in
%LocalAppData%\DeoLedMatrixManager\logs. With Debug mode on, it also logs what the app does and writes a once-a-minute performance file; those files are deleted after 14 days. Logs describe the app and the modules (ports, USB slots, firmware version, CPU and memory use), not you. - The Microsoft Store copy keeps these files in its own private folder, which Windows deletes when you uninstall it. The GitHub installer's uninstaller asks whether to delete them.
What the app reads
- Your PC's manufacturer and model, to check it's a Framework Laptop 16.
- Lid, screen and power state, to switch the LEDs off and on.
- Time, date, battery level, and CPU and RAM use, only when you put them in your text.
These are used on your PC as the app runs and are never sent anywhere. There's no telemetry, no analytics, no ads, no account and no update check. Links in the app open in your web browser.
This website
The site has no cookies and no analytics. It's hosted on GitHub Pages and loads its font from Google Fonts, so GitHub and Google see your IP address when they send you the page and the font.
Questions
Open an issue or a pull request on GitHub. Changes to this policy will be posted here. Last updated 6 November 2026.
Disclosure
An independent community project, not affiliated with or endorsed by Framework Computer Inc. "Framework" is a trademark of its owner. It was built from public information and open-source work. Thank you to:
- FrameworkComputer/inputmodule-rs (MIT). The LED Matrix serial protocol, sleep and idle-timeout behavior, USB IDs and firmware scroll, read from its firmware source.
- FrameworkComputer/dotmatrixtool and ledmatrix.frame.work (MIT, based on stefangordon/dotmatrixtool). The two-matrix layout and the black-and-white pattern definitions.
- Framework Wiki: LED Matrix Manager and its LED Matrix community projects section. Background research and pointers to the official tools.
- Framework Community forum. The 60-second idle timeout and the keep-alive approach.
- Microsoft Learn: power setting GUIDs, display output technologies and the WPF Fluent theme. How the app detects the lid, the laptop screen and screen power.
Much of the app was designed and written with help from Claude (Anthropic). License notices for the MIT-licensed sources are in THIRD-PARTY-NOTICES.md. The app itself is MIT-licensed.