Most of us are aware that charlieplexing can drive a large number of LEDs from a relatively small number of I/O pins, but [David Johnson-Davies] demonstrates adding another dimension to that method to ...
The project is based on a PIC18F1320 microcontroller that creates a dry climate niche dweller like a cactus known as LEDactus which can produce a pleasant display while being immobile. A significant ...
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