void setup() {
  Serial.begin(9600);
  pinMode(3, INPUT);
}

void loop() {
  int v = analogRead(A0);
  int h = analogRead(A1);
  int sw = analogRead(A3);
  Serial.print("v=");
  Serial.print(v);
  Serial.print(", h=");
  Serial.print(h);
  Serial.print(", sw=");
  Serial.println(sw);

  if(v>800){ //up
    digitalWrite(8, HIGH);
    delay(10);
  }else{
    digitalWrite(8, LOW);
  }

  if(v<300){ //down
    digitalWrite(9, HIGH);
    delay(10);
  }else{
    digitalWrite(9, LOW);
  }

  if(h<300){ //right
    digitalWrite(10, HIGH);
    delay(10);
  }else{
    digitalWrite(10, LOW);
  }

  if(h>800){ //left
    digitalWrite(11, HIGH);
    delay(10);
  }else{
    digitalWrite(11, LOW);
  }

  delay(200);
}