const int potPin = A0;
boolean sendData = false;

void setup() {
  Serial.begin(115200);
  pinMode(potPin, INPUT);
  Serial.println("Enter 'S' to start transmission");
}

void loop() {
  // Check for commands
  if (Serial.available() > 0) {
    char cmd = Serial.read();
    switch (cmd) {
      case 'S': // Start sending data
        sendData = true;
        Serial.println("Data transmission started");
        break;
      case 'P': // Pause sending data
        sendData = false;
        Serial.println("Data transmission paused");
        break;
    }
  }

  // Send potentiometer data if enabled
  if (sendData) {
    int potValue = analogRead(potPin);
    float voltage = potValue * (5.0 / 1023.0);
    
    Serial.print("Pot: ");
    Serial.print(potValue);
    Serial.print(", Voltage: ");
    Serial.println(voltage, 2);
  }

  delay(100);
}