LED display for FluidNC

[rvanderpool3 (Richard Walter Vanderpool III)]

I’ve been wanting a basic, large, bright display to show the machine coordinates and a “busy” indicator(green is idle, ready is running) so passers-by know the machine is running. With the help of Claude, I came up with GitHub - rvanderp3/cnc-led-display: Mirrors FluidNC coordinates to a WLED matrix display · GitHub .

I’m still working on improvements but I’ve really enjoyed this upgrade. If anyone is interested, details on the hardware are in the GitHub repo and I’ll happily accept contributions.

[jeyeager (Jason Yeager)]

You could also create a WLED usermod that talks to FluidNC directly and skip the app in the middle. I created one that connects to FluidNC via TCP/Telnet and let’s you display a custom preset per state.

[rvanderpool3 (Richard Walter Vanderpool III)]

Oh, yeah, that is even better. That’s a cool idea.

[jeyeager (Jason Yeager)]

This is what I created if it helps. I’ll note that they changed the structure with the latest WLED release. I’m working on that update when there’s not something shinier to capture my attention.

FluidNC LED Musings

If anyone wants to try this, I pushed up my changes to the usermod-fluidnc branch in my fork. I’m sure I’ll be making some tweaks, but it’s functional. If you’ve never played with WLED before, you should probably try it out with a standard build before going down this path. There’s a lot to WLED but it’s super fun. If you’ve compiled FluidNC yourself before, this works the same way using PlatformIO. There are some extra steps for the web portion (like installing Node JS). More details ar…