Apr 4, 2014 - Using a 74HC595 8 Bit Shift Register with a 7 segment LED and Arduino

Apr 4, 2014 - Using a 74HC595 8 Bit Shift Register with a 7 segment LED and Arduino

Using a 74HC595 8Bit Shift Register with a 7 segment LED and Arduino

A Better Example of using a 8 bit shift register (74HC595) with 7 segment LED - I got it working

A Better Example of using a 8 bit shift register (74HC595) with 7 segment LED - I got it working

int dataPin = 2;

int latchPin = 4;

int clockPin = 3;

byte dec_digits[] = {0b10000110,0b01101101,0b1001111,0b01010110,0b011011011,0b1110011,0b00001110,0b11111111,0b01011110,0b0111111 };

void setup() {

 //set pins to output so you can control the shift register

 pinMode(latchPin, OUTPUT);

 pinMode(clockPin, OUTPUT);

 pinMode(dataPin, OUTPUT);

}

void loop() {

 for (int numberToDisplay = 0; numberToDisplay < 10; numberToDisplay++) {

   // take the latchPin low so

   // the LEDs don't change while you're sending in bits:

   digitalWrite(latchPin, LOW);

   // shift out the bits:

   shiftOut(dataPin, clockPin, MSBFIRST, dec_digits[numberToDisplay]);

   //take the latch pin high so the LEDs will light up:

   digitalWrite(latchPin, HIGH);

   // pause before next value:

   delay(1000);

 }

}