void setup() {
  Serial.begin(115200);
  pinMode(A1, INPUT);
  pinMode(4, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(6, OUTPUT);
}

void loop() {
  int b = (analogRead(A1)/4);
  analogWrite(4,b);
  analogWrite(3,b/8);
  analogWrite(5,b/16);
  analogWrite(2,b/32);
  analogWrite(6,b/64);
}