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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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Arduino PWM fading led in assembly

But now i tried to half-bright a LED with pwm. I checked up my code for errors but I didn't find any, and the LED just full brighs. I checked wiring too. I'm getting struck :c. … ldi r16, 0b00100011 ;fast pwm mode, non inverted pwm at oc0b = pin 5 (right?) …
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