// wind vane parameters
 #define MUX_A D5
 #define MUX_B D4
 #define MUX_C D3
 #define READPIN 0 // Analog input on NodeMcu = A0

 #define NO_PINS 8 
 String SW_VERSION = "Ver. 4.0";
 int val[NO_PINS]; // number of ports mux

 float wind_Direction_Angle = 0;
 String wind_Direction_Rose;
 String windRose[16] = {"N","NNE","NE","ENE","E","ESE","SE","SSE","S","SSW","SW","WSW","W","WNW","NW","NNW"};
 float windAng[16] = {0,22.5,45,67.5,90,112.5,135,157.5,180,202.5,225,247.5,270,292.5, 315,337.5};

// Direccions Matrix
 int Digit [16] [NO_PINS] = 
  { {1,0,0,0,0,0,0,0},
    {1,1,0,0,0,0,0,0},
    {0,1,0,0,0,0,0,0},
    {0,1,1,0,0,0,0,0},
    {0,0,1,0,0,0,0,0},
    {0,0,1,1,0,0,0,0},
    {0,0,0,1,0,0,0,0},
    {0,0,0,1,1,0,0,0},
    {0,0,0,0,1,0,0,0},
    {0,0,0,0,1,1,0,0},
    {0,0,0,0,0,1,0,0},
    {0,0,0,0,0,1,1,0},
    {0,0,0,0,0,0,1,0},
    {0,0,0,0,0,0,1,1},
    {0,0,0,0,0,0,0,1},
    {1,0,0,0,0,0,0,1},
  };
  // ABC mux combinations
 int muxABC[8] [3] = 
  { {0,0,0},
    {0,0,1},
    {0,1,0},
    {0,1,1},
    {1,0,0},
    {1,0,1},
    {1,1,0},
    {1,1,1},
  };
  
// anemometer parameters
 volatile byte rpmcount;   // count signals
 volatile unsigned long last_micros;
 unsigned long timeold;
 unsigned long timemeasure = 25.00; // seconds
 int timetoSleep = 1;            // minutes
 unsigned long sleepTime = 15;   // minutes
 unsigned long timeNow;
 int countThing = 0;
 int GPIO_pulse = 12;  // NodeMCU = D6 
 float rpm, rps;         // frequencies
 float radius = 0.088; // meters - measure of the lenght of each the anemometer wing
 float linear_velocity = 0; // m/seg
 float linear_velocity_kmh; // km/h
 float omega = 0; // rad/seg