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- const int buzzerPin = 13; //pin untuk BUZZER
- const int ldrPin = A0; //pin untuk LDR
- void setup() {
- Serial.begin(9600);
- pinMode(buzzerPin, OUTPUT); //BUZZER pin adalah OUTPUT
- pinMode(ldrPin, INPUT); //LDR pin adalah INPUT
- }
- void loop() {
- int ldrStatus = analogRead(ldrPin); //membaca nilai dari LDR
- //cek status LDR <= 100
- //Jika ya, BUZZER akan hidup
- if (ldrStatus <=100) {
- digitalWrite(buzzerPin, HIGH); //BUZZER aktif
- Serial.println("LDR GELAP, BUZZER AKTIF");
- }
- else {
- digitalWrite(buzzerPin, LOW); //BUZZER tidak aktif
- Serial.println("-------------------");
- }
- }
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