int buzz=7;
int led1=3;
byte salida=10;

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(buzz, OUTPUT);
pinMode(led1, OUTPUT);
}

void loop() {
  digitalWrite(led1, HIGH);
  digitalWrite(buzz, HIGH);
  analogWrite(buzz, salida);
  delay(1000);
  tone(7, 200, 250);
  // put your main code here, to run repeatedly
}