LED Blinds Turn Windows into Displays

led blinds

[Dinofizz] is almost done with his vertical LED blinds. The build makes use of 768 diffused white LEDs (10mm size), at a resolution of 48×16, and it only requires one 16-channel LED driver (a MBI5026), which makes use of 3x 4-to-16 demultiplexers. Did we mention it has 16 shades of grayscale too?

At the heart of the many piles of painstakingly soldered wires is an ATmega644A microcontroller which takes care of interpreting the data for the display. He didn’t write the firmware himself though, that credit goes to [Jay Clegg] who does some pretty cool work with Evil Mad Science’s Peggy 2.0 LED driver.

What we really have to admire is the amount of effort he put into this project. He used custom PCBs to daisy chain the blinds together, 300 feet of 16-way ribbon cable, and approximately 4000 individual solder joints! You’d think there would have been an easier way!

Making use of his high rise windows, he now has the ability to broadcast messages for the world to see. After the break check out the video of them in action!


  1. Jeremy Cook says:

    Neat hack. Hopefully he will come out with a better video to show it off!

  2. ojh says:

    The world needs to read backwards ?!?

  3. cybermaus says:

    Nice but it seems to already have some dead pixels

  4. Hack Man says:

    “at a resolution of 48×16″


  5. lastchancename says:

    Higher res – take a photo of your room when lit – then display it outside when the blinds are closed… !
    Perhaps add some saucy content over it – like a couple preparing for an intimate moment, or a burglar ‘casing the place’…
    You can identify which neighbours have a telescope!

  6. Jas Strong says:

    There is an easier way. I sell it.


    You should be done in less than an hour.

  7. Trui says:

    First 30 seconds of the 40 second video clip could have been trimmed off.

  8. MatsSvensson says:

    Can you stick your head through it, without slicing up your eyeballs?

  9. Whatnot says:

    I like it, but I’m way too lazy to make this myself, also it might get too expensive for me for a frivolous thing like this.
    Now it might become commercially available for a low price all over the place at some point, but then it isn’t interesting anymore. Oh well.

    Incidentally, I wonder if you could use one of those common ‘LED tags’ you can wear on your clothes or those small matrix displays, and simply disconnect the LED matrix and connect the driving part to a homemade large net of LED like in this project. Scale up the output as it were.

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