int sw1;
int sw1Smoothed;
int sw1Prev;

void setup() {
  Serial.begin(9600);
  pinMode(2, INPUT_PULLUP);
}

void loop() {
  sw1 = digitalRead(2);
  sw1 = sw1 * 100;

  sw1Smoothed = (sw1 * 0.05) + (sw1Prev * 0.95);

  sw1Prev = sw1Smoothed;

  Serial.print(sw1);
  Serial.print(" , ");
  Serial.println(sw1Smoothed);

  delay(10);
}