This television is perfect except for its low resolution and the fact that it can’t be seen by the naked eye. [Chris Shen’s] art installation, Infra, uses 625 television remotes as pixels for a TV screen. There’s a little bit of insight to be gained from the details which [Chris] shared with EMSL.
The remote controls were all throw-aways. Even if there are problems with the buttons, battery connectors, or cases, chances are the IR led in each was still functional. So [Chris] patched into them using about 500 meters of speaker wire.
Why 625 pixel? Because that’s how many LEDs the Peggy board can handle. We’ve seen this open source LED board driving video in other projects. Here it’s been connected to each remote using Molex connectors. Each of the headers has the same pitch as a through-hole 5mm LED. The entire board was filled with them, and a mating crimp connector terminates the end of the wire coming out of each remote. This makes setup quite easy as the remotes don’t have to be installed in any particular order as long as the physical location matches Peggy’s grid.
You can get a glimpse of the piece playing video in the clip after the break.
Continue reading “Infra is a television made of Infrared pixels”
Evil Mad Scientist Laboratories received an email from someone who wanted to hack their Peggy kit. This LED matrix kit has been featured on Hack a Day in the past, and provides hardware to set up a 625 LED matrix.
This user built an external array of LEDs that they wanted to drive with the Peggy hardware. There are a few options for making this happen. The first one is to run wires from each of the 625 LED footprints on the board. Each has an anode and cathode, so that makes for a total of 1250 wires to run. It turns out that people have actually done this with the Peggy in the past, using very fine wire.
EMSL suggests wiring the rows and columns instead. This way, only one wire is needed for each row and column, allowing a 25×25 LED grid to use 50 wires instead of 1250. They also explain how to expand the grid to a 30×20 LED matrix. It’s a good explanation of how the kit works, and how it can be expanded.
We put a temporary ban on posting POV projects after receiving several LED spheres back in May. But we had to lift the injunction after seeing this superb Volumetric 3D POV display by [Wes Faler] and [Don Smith].
Their creative use of several readily available components adds to the alluring setup; the central elements being just a box fan and Peggy kit from EMSL. The video after the jump doesn’t really do the project justice, but if you missed it at Maker Fair Detroit and can’t make your own it’s the best you’re going to get.
Continue reading “Spin Peggy, get 3D POV”
The LED display toy known as the Peggy2.0 just keeps getting cooler and cooler. [Leonard] is now sharing with us how we can stream flash animations to one. It requires some Java and an Arduino, but the final effect is quite fluid and responsive. We’ve seen the Peggy grow from basically an electronic litebright to doing video and even being chained together to make larger displays.
Being avid fanatics of flashing lights, we always love to see the peggy2 in action. The video above shows another improvement, which is two peggy2 units working together as one. [iservice2000] chained the two together and wrote new code for the display. Using an Arduino to drive it all, he has gotten them to act as one. While video on the peggy2 isn’t new, this is the first time we’ve seen two of them chained together. The end result is going to be a scrolling sign that can be updated via the web, or that can display tweets. We did notice a bit of tearing, is that from the camera or the software?
For some, a peggy 2.0 is pretty cool, but simply not impressive enough. [MonsieurBon] felt this way and simply built a larger LED rig for his peggy2.0. It still uses the brains of the peggy, but the LED array is a custom built cabinet, using ping pong balls as diffusers. Another interesting modification is that they added a midi port to the setup to generate music based on what LEDs are lit. They say it creates some nice background generative music during the game of life. You can see a video of the system in action after the break.
It looks like they weren’t the only ones with this idea. The u:moon project is very similar, meant to be hung from a balloon. There seems to be an issue with the gallery on his page though, so you might want to go to his picasa gallery.
Continue reading “Peggy-zilla”
[Windell] from Evil Mad Scientist Laboratories took one of their Peggy 2 kits and gave it a little upgrade. The Peggy 2 is a programmable 25×25 LED display. It’s Arduino compatible and can accommodate big 10mm LEDs. Most people assemble them using just one color, but [Windell] decided to create giant RGB pixels by placing discrete red, green, blue, and white LEDs next to each other in the board. This creates a 12.5×12.5 grid of full color pixels. It’s an interesting effect and you should definitely check out the video embedded below which shows how the transition can be smoothed using a diffuser. Continue reading “Peggy 2 super pixels”