Hi, I thought I would be able to very quickly set up a GPIO-driven PWM controller for a fan using something like this... int PWMOUT = 10; void setup() { pinMode(PWMOUT, OUTPUT); // PWMOUT pin as output } void loop() { while(1) { digitalWrite(PWMOUT,HIGH); delayMicroseconds(20); digi…

25Khz PWM with digitalWrite...

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