labra1tehtava 2

const int analogInPin = A0;  // Analog input pin that the potentiometer is attached to
 //int analogOutPin[] = {3, 4, 5, 6, 7, 8, 9, 10};
 int ledpin1 = 3;
 int ledpin2 = 4;
 int ledpin3 = 5;
 int ledpin4 = 6;
 int ledpin5 = 7;
 int ledpin6 = 8;
 int ledpin7 = 9;
 int ledpin8 = 10;
int index;

int sensorValue = 0;        // value read from the pot
int outputValue = 0;        // value output to the PWM (analog out)

void setup() {
  // initialize serial communications at 9600 bps:
  Serial.begin(9600);
  pinMode(ledpin1, OUTPUT);
  pinMode(ledpin2, OUTPUT);
  pinMode(ledpin3, OUTPUT);
  pinMode(ledpin4, OUTPUT);
  pinMode(ledpin5, OUTPUT);
  pinMode(ledpin6, OUTPUT);
  pinMode(ledpin7, OUTPUT);
  pinMode(ledpin8, OUTPUT);
}
void loop()
  // read the analog in value:
  sensorValue = analogRead(analogInPin);
  // map it to the range of the analog out:
  //outputValue = map(sensorValue, 0, 1023, 0, 1023);
  // change the analog out value:
  //analogWrite(analogOutPin, outputValue);

  // print the results to the Serial Monitor:
  Serial.print("sensor = ");
  Serial.print(sensorValue);
  Serial.print("\t output = ");
  Serial.println(outputValue);

  if(sensorValue >= 500)
  {
    outputValue = 1023 ;

  digitalWrite(ledpin1, HIGH);  //Turns on LED #0 (pin 2)

  digitalWrite(ledpin2, HIGH);  //Turns on LED #1 (pin 3)

  digitalWrite(ledpin3, HIGH);  //Turns on LED #2 (pin 4)

  digitalWrite(ledpin4, HIGH);  //Turns on LED #3 (pin 5)

  digitalWrite(ledpin5, HIGH);  //Turns on LED #4 (pin 6)

  digitalWrite(ledpin6, HIGH);  //Turns on LED #5 (pin 7)

  digitalWrite(ledpin7, HIGH);  //Turns on LED #6 (pin 8)

  digitalWrite(ledpin8, HIGH);  //Turns on LED #7 (pin 9)

  }

  else
  {
    outputValue = 0;
    digitalWrite(ledpin1, LOW);  //Turns on LED #0 (pin 2)

  digitalWrite(ledpin2, LOW);  //Turns on LED #1 (pin 3)

  digitalWrite(ledpin3, LOW);  //Turns on LED #2 (pin 4)

  digitalWrite(ledpin4, LOW);  //Turns on LED #3 (pin 5)

  digitalWrite(ledpin5, LOW);  //Turns on LED #4 (pin 6)

  digitalWrite(ledpin6, LOW);  //Turns on LED #5 (pin 7)

  digitalWrite(ledpin7, LOW);  //Turns on LED #6 (pin 8)

  digitalWrite(ledpin8, LOW);  //Turns on LED #7 (pin 9)
  }

  // wait 2 milliseconds before the next loop for the analog-to-digital
  // converter to settle after the last reading:
  delay(2);
}