Chris and I are making an LED array which will display two colour images from a webcam. Using 80 shift registers we hope to drive 640 LEDs. With a little help from Jon Bird today, we got to grips with the shift register tutorial on the Arduino website. Its pretty straightforward - the idea is that as new data enters it forces the older data down the pipe so to speak.
In the next week or so I'll write some code to communicate with the Arduino board from a PC sending the image as a string containing 640 characters and post it on here. Until then here's a few pics.
Gareth
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