During initial testing of the LongPixel we were brainstorming new ways of stress testing it, since it’s actually really hard to get a long enough run of 12V LED strips that draw near the 10A current limit of the board. This little project was an attempt to approach that limit and didn’t nearly get there, but it was certainly fun trying.

24 3W RGB LEDs were wired in 8 parallel sets of 3 LEDs in series along with some beefy power resistors to get the voltage on each series chain channel just right. Each channel is then controlled by the corresponding R/G/B channel on the LongPixel.

The structure is a quick foam board job because it’s easy to work with and was what we had on hand. Since this was really more of a one-time demo kind of thing, there’s no heat sinking on the LEDs or resistors. They do warm up a bit after a few minutes, but as long as they’re not being driven full bright white, the heat was manageable for a few quick pictures/videos.

There are other better ways of generating huge amounts of light with these kind of LEDs, but this was a fun side project. And now we have a thing to throw gobs of color all over the place 🙂

 

After a long week at the Day Job(tm), I sought the catharsis brought about by creativity and making something. To that end, I took stock of what parts I had lying around. I had been wanting to do something with a couple of TinyTim LED boards I’ve had from previous projects. These displays were sent to us by our good friends at WyoLum. I decided I wanted to mount the 4 panels I had loose and make a nice-looking All-In-One 8×32 display. I grabbed a Raspberry Pi with wifi module, one of our AllPixel LED controllers, and got to work.

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SparkCon_Thanks
 

A Huge Thanks to everyone who came out and saw us at GeekSpark this weekend! We had a great time and were thrilled at the response we got from the giant display.

If you want to know more about the AllPixel LED driver and the BiblioPixel Python library that were used to make the display, check out the AllPixel Info Page.

We’ll have a more detailed post up later with some more pictures.

Thanks for checking us out!

I was playing around with the Replicator 2 and this popped out. I took the bottom half of the case for the AllPixel and merged it into a stand for the WyoLum TinyTiM (which is due to go on sale shortly, check their store). The TinyTiM is held upright similar to the way some tablet stands work. I used solid core wires to connect the AllPixel to the TinyTiM. This allows for the exact angle to be adjusted and adds some stability. I’ll be posting the design files on the AllPixel github repo soon.

TinyTimAPStand (5)

TinyTimAPStand (2)

TinyTimAPStand (3)

TinyTimAPStand (4)

TinyTimAPStand (1)