void setup() {
  // put your setup code here, to run once:
int led = A1;
pinMode(led, INPUT);


}

void loop() {
  // put your main code here, to run repeatedly:
Serial.begin(115200);
int val = analogRead(A1);
Serial.print("led :");
Serial.println(val);
delay(200);
analogWrite(A1,191);
delay(100);


}