int nilaisensor =0;
int nilaioutput=0;
int nilai;

void setup() {
  // put your setup code here, to run once:
pinMode( 3, OUTPUT);
pinMode(A0, INPUT_PULLUP);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
nilaisensor=analogRead(A0);
nilaioutput=map(nilaisensor,0,1023,0,255);
digitalWrite(3, nilaioutput);
Serial.println("nilai output");
Serial.println(nilaioutput);

delay(3);

}