const int LED1=2;
const int LED2=12;
const int LED3=4;

int analogpin=0;
int val=0;
void setup() {
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  val=analogRead(analogpin);
  Serial.println(val);
  val=map(val,0,1023,0,255);
  analogWrite(LED1,val);
  analogWrite(LED2,val);
  analogWrite(LED3,val);


}