int pir = 2;
int r = A3;
int g = A4;
int buzzer = 3;


void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(pir , INPUT);
pinMode(r , OUTPUT);
pinMode(g , OUTPUT);
pinMode(buzzer , OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:

int pir_value = digitalRead(pir);

int value1 = 0 , value2 = 0;

if(pir_value == 1){
  value1 = 255;
digitalWrite(buzzer , 1);
}
else{
  value2 = 255;
}

analogWrite(r , value1);
analogWrite(g , value2);
digitalWrite(buzzer , 0);
}