void setup() {
 Serial.begin(9600);
 analogReadResolution(10);
 pinMode(D8, INPUT_PULLUP);

}

void loop() {
int y = digitalRead(D8);
int x=analogRead(26);
Serial.println(x);

if(y == LOW)
{

analogWrite(D5,HIGH);
delay(x);
analogWrite(21,LOW);
delay(x);
}

 else if(y == HIGH){

analogWrite(D5,x);
delay(500);
}
}