void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(6, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int pot_read = analogRead(A5);
  int brightness = map(pot_read, 0, 1024, 0, 255);
  Serial.println(brightness);
  analogWrite(6, brightness);
  delay(50);
}