![]() When the counter is less than the PWM value, the pin outputs a HIGH when the counter is greater than the PWM value, the pin outputs a LOW. The 8-bit PWM value that you set when you call the analogWrite function: analogWrite(myPWMpin, 128) Outputs a square wave is compared against the value in an 8-bit counter. On the Arduino UNO and YourDuino RoboRED etc., pins 3,5,6, 9, 10, 11 can be configured for PWM output. 1.3 For Arduino Mega1280, Mega2560, MegaADK, Spider or any other board using ATmega1280 or ATmega2560.1.2 For Arduino Uno, Nano, YourDuino RoboRED, Mini Driver, Lilly Pad and any other board using ATmega 8, 168 or 328.1.1 How do you change the PWM frequency?. ![]() 1 Changing PWM Frequency on the Arduino.
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