#include <Adafruit_NeoPixel.h> //include the embedded neopixel library

int pushButton = D1; //declare the position of the button
int led = D0; //declare the position of the led
int Power = 11; //declare this pin needed by the neopixel
int PIN  = 12; //declare this pin needed by the neopixel

#define NUMPIXELS 1 //delcare how many neopixels are embedded
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800); //setup the neoxpixel

void setup() {
  // initialize serial communications at 9600 bps:
  Serial.begin(9600);
}

void loop() {

  while (Serial.available()) {
    // get the new byte:
    int valor = (int)Serial.read();
    int valor2 = valor - 48;
    Serial.print("el valor es = ");
    Serial.print(valor2);

    switch (valor2) {
    case 0:    // your hand is on the sensor
      Serial.print("cero");
      break;
    case 1:    // your hand is close to the sensor
      Serial.print("uno");
      break;
    case 2:    // your hand is a few inches from the sensor
      Serial.print("dos");
      break;
    case 3:    // your hand is nowhere near the sensor
      Serial.print("tres");
      break;
  }
        }
   
  }