int led1 = 2;
int led2 = 3;
int led3 = 4;
int led4 = 5;
int pot1 = A0;

void setup() {
Serial.begin(9600);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(pot1, INPUT);}

void loop() {
if (analogRead(pot1) >= 0&& analogRead(pot1)<=171) {
  digitalWrite(led1, HIGH);
} else {
  digitalWrite(led1, LOW);
}
Serial.println(analogRead(pot1));

if (analogRead(pot1) >= 172&& analogRead(pot1)<=500) {
  digitalWrite(led2, HIGH);
} else {
  digitalWrite(led2, LOW);
}
Serial.println(analogRead(pot1));

if (analogRead(pot1) >=501&& analogRead(pot1)<= 845) {
  digitalWrite(led3, HIGH);
} else {
  digitalWrite(led3, LOW);
}
Serial.println(analogRead(pot1));

if (analogRead(pot1) >= 856) {
  digitalWrite(led4, HIGH);
} else {
  digitalWrite(led4, LOW);
}
Serial.println(analogRead(pot1));
delay(1000);
}