32x16 RGB LED Matrix Ping Pong Ball - Plasma Wall
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Uploaded by rheller1981 on Mar 23, 2011
This is our latest project. A 32x16 RGB LED matrix with Ping Pong Balls as diffusors. The matrix is build modular in sections of 8x8 LEDs so it's enlargeable without limitations. However, for the moment we spend more than enough time in soldering and wiring :-)
The main challenge for this project was to control 1536 individual LED's (512xRGB) with one single ATMEGA 328. Not enough we also claimed to have PWM one each individual LED separately.
What we achieved is a system that is capable to drive 512 RGB-LED with 216 colors each and a frame rate of 20fps. Furthermore the µC has still capabilities to manage realtime data transfer from a host PC via UART.
The matrix has two modes: First is just receiving data from a PC (via Processing) and displaying it. In second mode the µC it-self calculates a plasma algorithm realtime without any connection to the PC. The mode can be chosen by a simple switch on the back side of the wall not shown in the clip.
Within the next days we will do a complete documentation on our project page including all schematics, wiring and source code.
See: https://sites.google.com/site/arduinodiyprojects/
So long,
Pepe
PS: Unfortunately it turned out that the frame rate of my camera is about equal to that of the matrix. Thus you see some flickering / sticking in the clip that is not existent in real. Human eye is easier to cheat than a CMOS chip :-)
Uploader Comments (rheller1981)
All Comments (12)
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i have a couple questions:
what is the spacing between the leds?
can you make like spiral and/or word patterns with it?
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but will it blend?
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How do you have it connected to the computer, and how does it know what window on the computer to display on the wall. I am building a variation of this and am havign some issues.
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Wow, very cool also lots of info on your site. Just started with Arduino after having messed with PICs and man, it's cool !
Your wall really rocks the place ! i am so impressed.
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Very nice project!
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with a wall like that, you dont need LSD to go on a trip, gust stare in it for a couple of hours and you'll be Tripin for shore!!
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I want to make one how much money would i need to save with out the cost of beer
shawn963741 10 months ago
@shawn963741
Total costs is about 500 EUR for the material.
rheller1981 10 months ago
Nice wall looks super.
how do you mean 216 colors?
how much pwm is there per R or G or B color?
Did you use gamma correction?
ddjazz 11 months ago
@ddjazz
There are 6 gray scale levels for each color (5 PWM cycles) so 6x6x6 = 216 colors in total. There's is no gamma correction.
rheller1981 10 months ago