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What is PWM dimming, and what are the alternatives?

Lots of modern phones use pulse width modulation, or PWM, to manage brightness. But what is PWM, why is it harmful, and what ...
GitHub

Various routines for a 3x3x3 matrix of PWM LEDs powered by a ATMega 2560

There was an error while loading. Please reload this page. • An Arduino powered 3 x 3 x 3 LED matrix cube capable of individually turning on any combination of the ...