#define HIGH_BTN 2
#define LOW_BTN 4
#define LED 11

byte count = 0;

void setup() {
  // put your setup code here, to run once:
  pinMode(HIGH_BTN, INPUT);
  pinMode(LOW_BTN, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(HIGH_BTN)==HIGH){
    count +=1;
    analogWrite(LED,count); 
  }
    

 if (digitalRead(LOW_BTN)==HIGH){
    count -=1; 
    analogWrite(LED,count); 
 }  


}