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Servo Motor SG90

Wiring​

Servo WireArduino Pin
Brown (GND)GND
Red (VCC)5V
Orange (Signal)D9 (~PWM)

Code​

#include <Servo.h>
Servo myservo;
void setup() { myservo.attach(9); }
void loop() {
  myservo.write(0); delay(1000);   // 0 degrees
  myservo.write(90); delay(1000);  // 90 degrees
  myservo.write(180); delay(1000); // 180 degrees
}

Specifications​

  • SG90: 1.2 kg·cm, 0.12s/60°
  • MG996R: 10 kg·cm, 0.17s/60°
  • PWM: 50 Hz, pulse 500-2400 µs
Power the servo externally

Servos draw 500mA-2A at stall. Arduino 5V pin can only supply ~400mA. Use a separate 5V power supply for servos, with common GND to Arduino.