Vumetre 
// C++ code
//emir asıllı
int potPin = A0;
void setup(){
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
}
void loop()
{
int dgr = analogRead(potPin);
digitalWrite(7,1);
if (dgr < 200) {
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, LOW);
digitalWrite(6, LOW);
}
else if (dgr >= 200 && dgr < 500)
{
digitalWrite(6, HIGH);
digitalWrite(5, HIGH);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(2, LOW);
}
else if (dgr >= 500 && dgr < 800) {
digitalWrite(4, HIGH);
digitalWrite(5, HIGH);
digitalWrite(3, HIGH);
digitalWrite(6, HIGH);
digitalWrite(2, LOW);
}
else if (dgr >= 800) {
digitalWrite(2, HIGH);
digitalWrite(3, HIGH);
digitalWrite(4, HIGH);
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(7, HIGH);
}
delay(50);
}
