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PWM is a form of signal modulation that allows digital output to approximate an analog signal. Use this for questions about using the PWM pins (marked with ~).

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Switch statements with Bluetooth serial input not working

I am trying to control the brightness of an LED using PWM. I am also trying to make it so that when I click a button on my bluetooth app, I can get it to change the frequency of the PWM pin. … frequency for PWM Pins 3 and 11: //TCCR2B = TCCR2B & B11111000 | B00000100; // set timer 2 divisor to 64 for PWM frequency of 490.20 Hz (The DEFAULT) //TCCR2B = TCCR2B …
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