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raspberry pi

14 Results tagged on "raspberry pi":  

What is charlieplexing? (a Raspberry Pi demo)

On past projects, when I needed multiple LEDs, I just connected each to its own GPIO pin. I knew the current only worked in one direction, but I didn't think to take advantage of that fact. Charlieplexing is a method for arranging multiple LEDs so as to use the minimal number of pins possible.
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