#include <TimerOne.h>
int potPin = 0;
int potValue = 0;
void setup()
{

  pinMode(13, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(8, OUTPUT);
  digitalWrite(8, HIGH);
  Timer1.initialize(20);
 
Timer1.pwm(9,256); 
}

void loop()
{

  potValue = analogRead(potPin) / 4;
  analogWrite(9, potValue);
}


void timerIsr()
{
   
}