led matrix display

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Uploaded by on Oct 15, 2011

I bought this Common anode LED matrix display at sayal electronics after work the other day for 5 bucks and I programmed an animation on my PIC16F628 microcontroller. I couldnt find any examples of the code for this on the internet so I litterally wrote the whole thing from scratch which took forever. Basicly I used a shift register to shift in one row at a time so no more than one row of LEDs is lit at any given instance. It does this at 4Khz so it looks like a single image because of our persistance of vision.

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