Arduino Code for a Controlling a Common Cathode 4 Digit 7 Segment Display using Two Shift Registers

led4_7_595MSB.ino

int latchPin = 2; //pin 12 on the 595
int dataPin = 3; //pin 14 on the 595
int clockPin = 4; //pin 11 on the 595

//D1 = 256, D2 = 512, D3 = 1024, D4 = 2048
int D1 = 3584;
int D2 = 3328;
int D3 = 2816;
int D4 = 1792;

void setup() {
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
}

void loop() {
  //A
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D1+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D1+119);
  digitalWrite(latchPin, HIGH);
  delay(1);

  //n
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D2+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D2+84);
  digitalWrite(latchPin, HIGH);
  delay(1);

  //t
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D3+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D3+120);
  digitalWrite(latchPin, HIGH);
  delay(1);

  //o
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D4+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D4+92);
  digitalWrite(latchPin, HIGH);
  delay(1);
  
  /*//0
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D1+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D1+63);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  //1
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D2+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D2+6);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  //2
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D3+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D3+91);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  //3
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D4+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D4+79);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  //4
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D1+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D1+102);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  //5
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D2+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D2+109);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  //6
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D3+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D3+125);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  //7
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D4+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D4+7);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  //8
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D1+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D1+127);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  //9
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D2+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D2+103);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  //DP
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D3+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D3+128);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  
  //A
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D4+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D4+119);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  
  //b
  digitalWrite(latchPin, LOW); //to avoid fluttering of led when you send data
  shiftOut(dataPin, clockPin, MSBFIRST, D1+64 >> 8);
  shiftOut(dataPin, clockPin, MSBFIRST, D1+124);
  digitalWrite(latchPin, HIGH);
  delay(1000);*/
}