Wiring
Check pinout, power supply, common GND and voltage levels before connecting the module.
Full code
#include <Servo.h>
Servo myServo;
void setup() {
myServo.attach(9);
}
void loop() {
myServo.write(0);
delay(1000);
myServo.write(90);
delay(1000);
myServo.write(180);
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.