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image to led matrix (Read 1886 times)
til
image to led matrix
Feb 17th, 2008, 11:59am  
hello everyone,

does anyone have an idea how to convert an image (jpg, png, etc.) to an LED-Matrix with processing?

there is a max msp solution, but for several reasons i want to have it done with processing.

the matrix will be 16x16. i would like to have an app that i can draw an image to a field to be converted into the matrix.

i am thankful to your hints.

best
til
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modjibee
Re: image to led matrix
Reply #1 - Feb 17th, 2008, 6:20pm  
maybe can help :

http://schmidt.devlib.org/jiu/index.html

For such a big problem, look for a good library. You have 100% of chance that your problem has already been solved.
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extrapixel
Re: image to led matrix
Reply #2 - Feb 17th, 2008, 6:24pm  
hi,

this is more of a hardware issue than a software issue. a friend of mine used the Serial-enabled LED-matrix from sparkfun.com. An arduino-board (www.arduiono.cc) received the "pixels" over serial from processing and translated them into the SPI-format the led-matrix understands.
The only thing processing did was down-scaling the video-image to the led-matrix resolution and send it over to the arduino.
what kind of hardware-setup do you have? without some hardware controller it's gonna be hard to controll 256 LEDs!

edit: modjibee, can "JIU" do something that processing can't?
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http://www.extrapixel.ch
WWW  
til
Re: image to led matrix
Reply #3 - Feb 18th, 2008, 12:17am  
first, thank you for your help.

hardwarewise i plan even further, the 16x16 led matrix should be controlled by an ATMEGA128 which i had programmed with arduino. then i want to have a usb connection to a computer running processing, wich is telling the information of the (downsized (16x16px), evaluated (brightness 0-255) image.

at least that is what i think it will be like.

please send more help Smiley

til
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