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When working with a microcontroller there are never enough pins to do the job. Sure you can move up to a hundred pin microcontroller and call it a day but you will have to pay a huge price for that chip, instead it is generally better to pass off the IO complexity to another chip. In this project Oscar uses the Micrel MM5450 is doing the heavy lifting when it comes to controlling the individual pixels of the 8X8 matrix. "I have used an Arduino Nano board with a LED 8×8 Matrix to show a simple text scroller." |
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