CREPUSCULAR SWITCH

MATERIALS

• ArduinoUNO
• Breadboard
• Jumperwires
• Arduino USB cable
• 1 LED
• 1 Resistor (220 Ohms)
• 1 Resistor (10 K)
• 1 LDR
• A computer with Arduino IDE

BREADBOARD ASSEMBLY

SCHEME

CODE

int PinLDR = 0; // pin conected to LDR 

int LedPin = 9; // pin conected to LED 

int luminosity; // variable 

int umbral = 500; 

void setup() 

{ 

 Serial.begin(9600); 

 pinMode(LedPin,OUTPUT);
digitalWrite(LedPin,LOW);

}

void loop() { luminosity= analogRead(PinLDR);
Serial.println(analogRead(luminosity));

 if (luminosidad > umbral) 

 { 

 digitalWrite(LedPin,LOW);

 } 

 else 

 { 

 digitalWrite(LedPin,HIGH);

}

delay (200);

}