Jurek and the Amazing Techno, Colored DreamWall

Jurek and the Amazing Techno, Colored DreamWall

The title is mostly a placeholder, as I haven't really figured out a name for it yet. This project is a wall hanging that consists of semi-large triangular pixels using discrete RGB LED's and PWM to control intensity levels of each LED, resulting in a 4096-color display.

Saturday, May 07, 2005

component testing

Well, I spent a little time and tested the LEDs. The only 9V battery I had lying around was pretty much toast, so the LED tester didn't do a whole lot for me. I hooked 2 of the LED's up to my 4.5V test circuit that I used before and the intensity was amazing. I even think I was able to see some magenta through the sanded acrylic! Yippie!
I also tested the distance sensor. Damn, that thing is sweet. It was able to detect my hand just fine (the type of objects I wanted it to detect in the first place) and worked pretty close to the specified range. Nominal voltage was 0.2V and it peaked at about 2.4V at 10cm away. Under 10cm, it started to drop the voltage. I'm not really sure what that's all about. In the datasheet, it said the voltage is supposed to drop back down to 0.2V, but it hovered at around 1.3V.
The light sensor was really hard to test because it's a 2mm x 2mm surface mount component. I was sorta able to get it to work through some really tricky adhesive work, but the response time to go from ~4V to 0V was somewhere around 3 seconds. The datasheet has a nominal response time of < 1ms, but their test circuit had a resistor on the output pin, so that may have been my issue.
Anyway, very promising (especially the distance sensor) and hopefully, I can get a better test setup going.



Anonymous marcus said...

An idea - One "mode" of your LED wall could be some sort of puzzle game using the sensors...

Monday, May 09, 2005 11:25:00 AM  
Blogger Jurek said...

Yeah, I've thought about this a little bit before... I might do it just because I have the option to, but if code space becomes scarce, then this will probably be one of the first things to not get included. With distance sensors, I could do some sort of 3d simon-style game, perhaps. Maybe have 2-4 "positions" per sensor that the player's hand has to enter, as well as getting the correct sensor.

Monday, May 09, 2005 8:33:00 PM  

Post a Comment

Links to this post:

Create a Link

<< Home