#define SENSOR A0
#define LED D2
#define BUZZER D3
void setup() {
pinMode(LED, OUTPUT);
pinMode(BUZZER, OUTPUT);
Serial.begin(9600);
}
void loop() {
int value = analogRead(SENSOR);
Serial.println(value);
if (value > 500) { // threshold
digitalWrite(LED, HIGH);
digitalWrite(BUZZER, HIGH);
} else {
digitalWrite(LED, LOW);
digitalWrite(BUZZER, LOW);
}
delay(300);
}