#include <Servo.h>
#include <IRremote.h>

#define PIN_RECEIVER 2
IRrecv receiver(PIN_RECEIVER);

Servo myservo;
int angle = 90;

#define BUTTON_PLUS  2
#define BUTTON_MINUS 152
#define BUTTON_UNKNOWN 0xFFFFFFFF

void setup() {
  Serial.begin(9600);
  receiver.enableIRIn();
  myservo.attach(9);
  myservo.write(angle);
}

void loop() {
  if (receiver.decode()) {
    unsigned long irCode = receiver.decodedIRData.command;
    receiver.resume();

    switch (irCode) {
      case BUTTON_PLUS:
        if (angle < 180) {
          angle++;
          myservo.write(angle);
          Serial.print("Angle: ");
          Serial.println(angle);
        }
        break;

      case BUTTON_MINUS:
        if (angle > 0) {
          angle--;
          myservo.write(angle);
          Serial.print("Angle: ");
          Serial.println(angle);
        }
        break;

      case BUTTON_UNKNOWN:
      default:
        Serial.println("Unknown Button Pressed!");
        break;
    }
  }
}