SeBsZ Blog
Update on the RGB LED Board! 
Sunday, May 23, 2010, 12:53 PM
Posted by Administrator
I know it's been a while, but I finally managed to write a post about the LED board. It contains 25 RGB LEDs, driven by 5 dimming LED controllers. The brain is an ATMega8 which takes care of reading from the SD Card, as well as accepting USB data through the FT232. I wrote a program in C# which allows you to create some simple effects. The effects are then saved to the SD Card which the LED Board can then read. It starts playing when it senses an SD card has been inserted.

The program:

Some pictures of the PCB:


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Exciting project 
Wednesday, March 24, 2010, 04:22 PM
Posted by Administrator

Above is a 3d model of the PCB I'm currently getting professionally produced as a prototype. Once I have it soldered, I will put up pictures and videos of it working.

It is a tile of 24x24cm consisting of 25 RGB LEDs. It has a USB connection, an Atmel Microcontroller as well as an SD Card reader all on one board!

More will be disclosed later...
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Long awaited update: now 49 RGB LEDs - a 7x7 matrix! 
Tuesday, March 23, 2010, 07:09 PM
Posted by Administrator
Sorry for the long delays but finally here is an update to my project. There is a short teaser video below as well. First some construction pictures:

The LEDs are stuck to a piece of 70x70 cm plywood. I have etched 5 new PCBS myself. Each PCB can drive 10 RGB LEDs, so 5 PCBS is enough for 49 RGB LEDs.

A piece of 70x70cm canvas was placed in front of the LEDs to produce the wonderful diffusing effect.

The software is written by me and will become more advanced. Stay tuned, exciting updates coming soon!!

Any questions can be emailed to me, sebs89 at g m a i l d.o.t com
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Quick update 
Monday, February 15, 2010, 10:09 PM
Posted by Administrator
I would just like to clarify that the board you see below is just a PROTOTYPE and my final display will have LEDs on cloth, on which I'm currently working. I'm planning on posting another update in the coming days/week.

Questions can always be mailed to me
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25 RGB LEDs! 
Saturday, January 23, 2010, 10:52 PM
Posted by Administrator
Well, it's time for another update! As I explained earlier, my plan is to eventually have RGB LEDs stuck to a large piece of cloth (maybe 2.5x2.5 meters), and being able to fold these pieces of cloth for easy transportation. Since this requires a bit more work, and getting the right cloth etc., I decided to first make a smaller 5x5 LED panel. I found a magnetic board hanging on my wall and decided it looked nice and square. After doing some measurements and drawing crosses, I placed my small LED circuit boards on the board. The result looked like this:

After many hours of soldering the circuit boards, stripping ribbon cables, attaching connectors, and of course a lot of tape, I got my board to look like this:

I have to agree, the tape does not make it look any prettier. Especially since the nice transparent cello tape ran out and I had to use that non-transparent type of tape half-way through. The back of the board has the LED driver boards attached, connecting nicely to the LEDs using IDC connectors:

Finally, a video of the 25 RGB LEDs working wonderfully:

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