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Christmas Tree Ornament
Posted July 22, 2015 by Chris
"This is the Christmas Tree Ornament I made. It’s a custom PCB that I designed in the shape of a Christmas Tree. The little 8 pin black chip you see on the front of the board is an Atmel ATTiny45 Microcontroller. It has 5 IO pins, and there are 20 LEDs on this board. Each LED is individually addressable through a clever trick known as Charlieplexing."
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