   }
   if (scale == 1) {
 
-    len = 500;
+
     t1 = 261.63;
     t2 = 293.66;
     t3 = 329.63;


void loop() {

  int scale = map(analogRead(0), 0, 1023, 0, 5);
  int len = 500;
  float t1 = 220;
  float t2 = 246.94;
  float t3 = 277.18;


  if (scale == 0) {

    t1 = 220;
    t2 = 246.94;
    t3 = 277.18;
