code

int sensorPin = A0;  // Analog pin for sensor
int threshold = 500;  // Threshold for detecting stress
int sensorValue = 0;

void setup() {
  Serial.begin(9600);  // Start serial communication
  pinMode(13, OUTPUT);  // Buzzer pin
}

void loop() {
  sensorValue = analogRead(sensorPin);  // Read sensor value
  
  if (sensorValue > threshold) {
    digitalWrite(13, HIGH);  // Turn on buzzer if lie detected
    Serial.println("Lie Detected!");
  } else {
    digitalWrite(13, LOW);  // Turn off buzzer
    Serial.println("No Lie Detected.");
  }
  
  delay(1000);  // Wait for a second before reading again
}