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tags: cronómetro cronometro

#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Max72xxPanel.h>


long duration;

//Vcc - Vcc
//Gnd - Gnd
//Din - Mosi (Pin 11)
//Cs  - SS (Pin 10)
//Clk - Sck (Pin 18)
const int pinCS = 5;

int d=0;
int s=0;
int S=0;
int m=0;

int resetmillis=0;

const int trigPin = 2;
const int echoPin = 4;


const int numberOfHorizontalDisplays = 4;
//const int numberOfHorizontalDisplays = 1; // retirar comentario para una sola matriz 
const int numberOfVerticalDisplays = 1;
Max72xxPanel matrix = Max72xxPanel(pinCS, numberOfHorizontalDisplays, numberOfVerticalDisplays);
String tape = "0123456789: ";  //tu mensaje
const int spacer = 1;
const int width = 5 + spacer; // The font width is 5 pixels
void setup() {
  Serial.begin(115200); // Starts the serial communication
   
  matrix.setIntensity(7); // Use a value between 0 and 15 for brightness
   //
  matrix.setPosition(0, 0, 0); // The first display is at <0, 0>
  matrix.setPosition(1, 1, 0); // The second display is at <1, 0>
  matrix.setPosition(2, 2, 0); // The third display is at <2, 0>
  matrix.setPosition(3, 3, 0); // And the last display is at <3, 0>
  matrix.setRotation(0, 1);    // Display is position upside down
  matrix.setRotation(1, 1);    // Display is position upside down
  matrix.setRotation(2, 1);    // Display is position upside down
  matrix.setRotation(3, 1);    // Display is position upside down
  
resetmillis=millis();

}
void loop() {
  
  //Primero dibujamos los 2 puntos tape[10] son los puntos en la cadena tape y 9 y 23 la posición empezando a contar por la izquierda teniendo los pins a la izquierda y el 0 es la tercera columna

  //Cada número ocupa 5 espacios, mas 1 de separación a cada lado
  //matrix.drawChar(23, 1, tape[10], HIGH, LOW, 1);
  //matrix.drawChar(9, 1, tape[10], HIGH, LOW, 1);
  
  matrix.drawChar(23, 1, tape[10], HIGH, LOW, 1);  
  matrix.drawChar(9, 1, tape[10], HIGH, LOW, 1);  

  int Tmillis=(millis()-resetmillis)/100;
  
  int D = Tmillis/60;
  int m  = Tmillis/600;
  int S  = Tmillis/100-m*6;
  int s  = Tmillis/10-m*60-S*10;
  int d  = Tmillis-m*600-S*100-s*10;
  
  matrix.drawChar(27, 1, tape[d], HIGH, LOW, 1);
  matrix.drawChar(19, 1, tape[s], HIGH, LOW, 1);
  matrix.drawChar(13, 1, tape[S], HIGH, LOW, 1);
  matrix.drawChar(5, 1, tape[m], HIGH, LOW, 1);
Serial.println(tape[d]);
  matrix.write(); // Send bitmap to display
  
 delay(100);
}