int blue=6;
int red=5;
int yellow=11;
int green=3;
int pot=0;
int button1=12;
int button2=13;
int buzzer=10;
int valor;

void setup(){

  pinMode(blue, OUTPUT);
  pinMode(red, OUTPUT);
  pinMode(yellow, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(buzzer, OUTPUT);
  pinMode(button1, OUTPUT);
  pinMode(button2, OUTPUT);
  pinMode(pot, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
valor=analogRead(pot);

if(valor >=100){
  digitalWrite(blue,HIGH);
  digitalWrite(red,HIGH);
  digitalWrite(yellow,HIGH);
  digitalWrite(green,HIGH);
}
else{
  digitalWrite(blue,LOW);
  digitalWrite(red,LOW);
  digitalWrite(yellow,LOW);
  digitalWrite(green,LOW);  
}
if(digitalRead(button1) == HIGH){
  tone(buzzer, 800);
  delay(1000);
}
else {
  noTone(buzzer);
  }
if(digitalRead(button2) == HIGH){
  tone(buzzer,1200);
  delay(2000);
}
else {
  noTone(buzzer);
  }
}