I made a small LED panel

(stavros.io)

90 points | by Brajeshwar 11 days ago

9 comments

  • stavros 7 hours ago
    I was about to comment that I also made a small LED panel, but then realized it was me.

    Here's the latest LED thing I'm working on (the design isn't mine): https://immich.home.stavros.io/share/oXerU8gnLn-dNHunPOg8lM8...

    • Lerc 4 hours ago
      Do you know if the panels can be bodged to be non square? There shouldn't be a lot of fancy wiring to screw up if it's all WS2812. Can you (delicately) chop a few LEDs out and bridge the connections?

      (hoping I have seeded this idea, so I'm not the first one to attempt this)

      • stavros 1 hour ago
        Sure, you can connect the LEDs together however you like (am I misunderstanding the question?).
    • phil42 3 hours ago
      How did you connect the individual smaller LED panels together? I guess the cool color patterns and the individual addressing comes from WLED then?
      • stavros 1 hour ago
        There's a photo of the panels connected to each other, each panel has three input and three output pads, and you solder those together. The software just sees one long strip, and you configure the shape of it so it corresponds to what you have in reality.
    • BolexNOLA 7 hours ago
      spidermanspointing.jpg

      Jokes aside this is super cool. I always find LED panels really interesting to look at under the hood. I’m so picky about the ones I like to use almost purely based on vibes when filming. They’re just one of those things that you immediately know you’re going to love or hate in post the moment they hit your subject

      • stavros 7 hours ago
        What can I say, I'm addicted to LEDs. I tried so hard to not make that cube above, but I failed.
  • scottbez1 7 hours ago
    On the topic of small LED panels, Jason of Evil Genius Labs has been making some really small LED panels [0] with addressable 1mm x 1mm LEDs (yes, individually addressable AND only 1mm on each side!). Fitting 128 onto a 1" circle is pretty sweet.

    I keep meaning to design some PCBs with them [1] but it's too far down my ever-growing list of projects to see the light of day...

    [0] https://www.evilgeniuslabs.org/one-inch-fibonacci128

    [1] https://www.lcsc.com/product-detail/C5349953.html

  • MrGilbert 2 hours ago
    Speaking about small led panels, I also recommend the "Fluid Simulation Pendant" from mitxela: https://mitxela.com/projects/fluid-pendant
  • smusamashah 2 hours ago
    I dont understand it. The resolution is only 8x8. How does the animation at the end looks so smooth and way higher resolution?
    • stavros 1 hour ago
      The diffuser fakes the resolution, basically, by blending the colors together physically.
  • Havoc 2 hours ago
    Tried my hand at this too. Except more janky and was aiming at lots of output.

    LED get freaking hot fast at higher wattages and quickly found myself dealing with heat sinks etc.

  • Lerc 5 hours ago
    I have a bunch of these 8x8 panels on their way from AliExpress right now for an art project that a part will look remarkably like the video. V1 will probably be a 32x32 just like it.

    I still haven't decided if I want to have a partition grid between the panel and the diffuser to make square edge pixels. It's definitely going to have a rp2350 inside. PIO is the best thing ever.

  • mytailorisrich 11 days ago
    The diffuser really makes this. The resulting effect looks great.
    • stavros 7 hours ago
      It really did! It looked much better than I hoped, I really liked the result.
  • karlkloss 3 hours ago
  • nikkwong 6 hours ago
    This is neat! Any notes on the algo for controlling the output of the ws2812s?