Running LED Menggunakan Arduino Uno dan Sensor LDR

Pada jejak kali ini mencoba membuat pengaruh intensitas cahaya terdapat perubahan keluaran Arduino.

Alat dan bahan yang dibutuhkan untuk membuat sistem ini :

• LDR
• Arduino Uno
• Resistor
• LED
• Kabel

List Program

int ldr=A0;//Set A0(Analog Input) for LDR.
int value=0;

void setup() {
Serial.begin(9600);
pinMode(8,OUTPUT);
pinMode(9,OUTPUT);
pinMode(10,OUTPUT);
pinMode(11,OUTPUT);
pinMode(12,OUTPUT);

}

void loop() {
value=analogRead(ldr);//Reads the Value of LDR(light).
Serial.println("LDR value is :");//Prints the value of LDR to Serial Monitor.
Serial.println(value);
if (value >= 5 && value < 50) {
digitalWrite(8, HIGH);
digitalWrite(9, LOW);
digitalWrite(10, LOW);
digitalWrite(11, LOW);
digitalWrite(12, LOW);
}
else if (value >= 50 && value < 100) {
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, LOW);
digitalWrite(11, LOW);
digitalWrite(12, LOW);
}
else if (value >= 100 && value < 150) {
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
digitalWrite(11, LOW);
digitalWrite(12, LOW);
}
else if (value >= 150 && value < 200) {
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
digitalWrite(11, HIGH);
digitalWrite(12, LOW);
}
else if (value >= 200 ) {
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
digitalWrite(11, HIGH);
digitalWrite(12, HIGH);
}
else {
digitalWrite(8, LOW);
digitalWrite(9, LOW);
digitalWrite(10, LOW);
digitalWrite(11, LOW);
digitalWrite(12, LOW);
}
delay(100);
}