74HC595 Display 2 x 7 segment

74HC595 Display 2 x 7 segment

Bedrijfsspanning: 5v dc

Voorbeeld sketch:

#include
// create shift register object (number of shift registers, data pin, clock pin, latch pin)
ShiftRegister74HC595 sr (2, 2, 3, 4); 

int number=99; // <--- Change it from 0 to 99

int value,digit1,digit2,digit3,digit4;
uint8_t  numberB[] = {B11000000, //0
                      B11111001, //1
                      B10100100, //2
                      B10110000, //3
                      B10011001, //4
                      B10010010, //5
                      B10000011, //6
                      B11111000, //7
                      B10000000, //8
                      B10011000 //9
                     };

void setup() {
  //Count from 0 to 'number'
  countUp();
  //Count from 'number' to 0
  //countDown();  // <--- Comment countUp and uncomment countDown
  //Blink 4 times all on and all off.
  blink(); 
}

void loop() {

}

void countUp(){
  for (int i = 0; i<=number; i++){
    //Split number to digits:
    digit2=i % 10 ;
    digit1=(i / 10) % 10 ;
    //Send them to 7 segment displays
    uint8_t numberToPrint[]= {numberB[digit2],numberB[digit1]};
    sr.setAll(numberToPrint);
    //Reset them for next time
    digit1=0;
    digit2=0;
    delay(1000); // Repeat every 1 sec
  }
}

void countDown(){
  for (number; number>=0; number--){
    //Split number to digits:
    digit2=number % 10 ;
    digit1=(number / 10) % 10 ;
    //Send them to 7 segment displays
    uint8_t numberToPrint[]= {numberB[digit2],numberB[digit1]};
    sr.setAll(numberToPrint);
    //Reset them for next time
    digit1=0;
    digit2=0;
    delay(1000); // Repeat every 1 sec
  }
}

//Blink
void blink(){
  for(int i = 0; i<4; i++){
    sr.setAllLow(); // set all pins Low (off)
    delay(1000);
    sr.setAllHigh(); // set all pins High (on)
    delay(1000);
  }
}