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We set the potentiometer pin as 0 (A0 on the Arduino Uno board), the CONTROL variable is the voltage that is used to cotrol the led brightness of the speed of the fan. In the setup() function the ...
So, if you want to regulate LED brightness linearly to your eye, it requires some clever thoughts and adaptations. ... The wiper of the 10K potentiometer is wired to A0 of Arduino (5V-A0-GND), while ...
(Said another way – any brightness will only use one of the cycle lengths). * If gamma is >2, gamma code modulation would use fewer interrupts (e.g., 256, rather than 1024 in the above example).
The Arduino then controls the state of the LED using the active high enable line from the column multiplexer chip. [Alex] wanted more than just a static image to show off on his new display, so he ...