#define LED 3
#define Buzzer 4
#define Potentiometer_LED A7
#define Potentiometer_Buzzer A6

int analogValue_LED;
int writeValue_LED;
double voltage_LED;

int analogValue_Buzzer;
int writeValue_Buzzer;
double voltage_Buzzer;

void setup() {
  // put your setup code here, to run once:

  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  analogValue_LED = analogRead(Potentiometer_Buzzer);
  writeValue_LED = map(analogValue_Buzzer, 0, 1023, 0, 255);
  voltage_LED = (double)analogValue_Buzzer*5/1023;

  analogValue_Buzzer = analogRead(Potentiometer_LED);
  writeValue_Buzzer = map(analogValue_LED, 0, 1023, 0, 255);
  voltage_Buzzer = (double)analogValue_LED*5/1023;

  analogWrite(LED, writeValue_LED);

  analogWrite(Buzzer, writeValue_Buzzer);

  Serial.print("Tensão no porto A7: ");
  Serial.println(voltage_LED);

  Serial.print("Tensão no porto A6: ");
  Serial.println(voltage_Buzzer);

  delay(100);
}