light sensor project

 const int NbrLEDs = 8; 

const int ledPins[] = {5, 6, 7, 8, 9, 10, 11}; 

const int photocellPin = A0; 

int sensorValue = 0; // value read from the sensor 

int ledLevel = 0; // sensor value converted into LED 'bars' 

void setup() 

{ for (int led = 0; led < NbrLEDs; led++) { pinMode(ledPins[led], OUTPUT);// make all the LED pins outputs 

} 

} 

void loop() { sensorValue = analogRead(photocellPin); ledLevel = map(sensorValue, 300, 1023, 0, NbrLEDs); // map to the number of LEDs 

for (int led = 0; led < NbrLEDs; led++) { if (led < ledLevel ) { digitalWrite(ledPins[led], HIGH); // turn on pins less than the level 

} 

else { digitalWrite(ledPins[led],LOW); // turn off pins higher than // the level 

} 

} 

}