// Arduino course
// Homework 3

// Write a program that turns ON and OFF the LEDs depending on the 
// position of the potenciometer. 
// One, and only one, LED should be ON at a time.
// Each LED must represent about 20% of the range.

int led_pins[] = {8,9,10,11,12};
int number_led = 5;
int potenc = A5;
void setup() {
 for(int x=0; x < number_led; x++) {
    pinMode(led_pins[x], OUTPUT);
 }
pinMode(potenc , INPUT);

}
void loop() {
int potenc_value = analogRead(potenc);
int led_index = map(potenc_value, 0, 1023, 0, number_led);

for(int y=0; y < number_led; y++) {
  if (y == led_index) {
    digitalWrite(led_pins[y], HIGH);
  } else {
    digitalWrite(led_pins[y], LOW);
  }

}
}