#include <Servo.h>
#define pulsePin 3
#define readPin A0
Servo M1;

void setup() {
  // put your setup code here, to run once:
  pinMode(readPin, INPUT);
  M1.attach(pulsePin,544,2400);
  M1.write(0);
}

void loop() {
  // put your main code here, to run repeatedly:
  int r = analogRead(readPin);
  int controlAngle = map(r, 0, 1023, 0, 180);
  M1.write(controlAngle);
}