int potPin = A0; // Potentiometer connected to A0
int buzzerPin = PA5; // Buzzer connected to PA5
int threshold = 2000;
void setup() {
pinMode(buzzerPin, OUTPUT);
Serial.begin(115200);
}
void loop() {
int value = analogRead(potPin); // Read potentiometer
Serial.print("Signal Value: ");
Serial.println(value);
if(value < threshold) {
digitalWrite(buzzerPin, HIGH); // Child far
Serial.println("Child is FAR");
}
else {
digitalWrite(buzzerPin, LOW); // Child near
Serial.println("Child is SAFE");
}
delay(300);
}