Four Resistors (~150Ω)

Charlieplexing LEDs with an AVR ATmega328 (or Arduino)

Charlieplexing LEDs with an AVR ATmega328 (or Arduino)

Charlieplexing is an ingenius method for controlling many LEDs without using many microcontroller pins. You can turn on or off one LED at a time. To light more than one LED at a time, you can scan the LEDs by turning a sequence of them on and off really fast. The number of LEDs you […]

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