Yuneec gimbal startup

#include <Servo.h>

Servo myservo;

int runLevel = 0;
int servoPin = 5;
int pwmInPin = 4;
int ledPin = 13;

void setup() {

  pinMode(ledPin, OUTPUT);
  pinMode(pwmInPin, INPUT);

}

void loop() {

  if (runLevel == 0)
    {
    delay(5000);
    myservo.attach(servoPin);
    runLevel = 1;
    }

  if (runLevel == 1)
  {
    myservo.writeMicroseconds(500);
    delay(2000);
    digitalWrite(ledPin, HIGH);
    runLevel = 2;
    myservo.detach();
  }

  if (runLevel == 2)
  {
    digitalWrite(servoPin,digitalRead(pwmInPin));
  }

}