Wiring
Check pinout, power supply, common GND and voltage levels before connecting the module.
Full code
const int mosfetPin = 6;
void setup() {
pinMode(mosfetPin, OUTPUT);
}
void loop() {
analogWrite(mosfetPin, 80);
delay(1000);
analogWrite(mosfetPin, 220);
delay(1000);
analogWrite(mosfetPin, 0);
delay(1000);
}How it works
This lesson matches the page title and gives a clean starting point for this exact example.
Common mistakes
Check board selection, wiring, libraries, power supply and serial monitor baud rate.