Simple feature-rich 8 Digit 7-segment display driver for dual 74HC595 shift register displays.

Setup is simple and straight forward

Install in Arduino IDE Library Manager or:
Download 74HC595Plus Library
Install in Arduino IDE: Click Sketch > Include Library > Add .ZIP Library... Select Library file, Done.
Manual Install: Unzip Library file, locate Arduino library folder, place unzipped file in folder. Done.

Include 74HC595Plus and Create Instance of HC595Plus Class providing the 3 digital pins for your display:

#include <74HC595Plus.h>

HC595Plus display(12, 11, 10);  // data, clock, latch

The "display" object can be named anything you wish eg. d1(data, clock, latch).

Multiple example sketches can be found in the library files or Arduino IDE showcasing the flexability and ease of control over your 7 segment display. Example sketches can be accessed in Arduino IDE: File > Examples > 74HC595Plus

These include:
Text and Number
Animation of a single digit
Whole display Animations

Can be called with minimum of 1 parameter. Optional parameter is the offset from the .

display.displayTxt("Char String");
display.displayTxt("Char String", 4); //offset 4 digits to the left

Some letters are not able to be displayed on a 7 Segment screen, they will output the closest possible version of that character but use is . These characters are K, M, N, V, W, X

Can be called with minimum of 1 parameter. 2 optional parameters can be given; the offset from the and the decimal places after the number.
Function supports both int values and float values and will if no decimal parameter is provided with float values.

display.displayNumber(0); //Displays number 0 with no offset, no decimal places
display.displayNumber(12.345678, 3); //Displays 12.345, offset 3 digits to the left, default 3 dec places
display.displayNumber(12.345678, 0, 6); // Displays 12.345678 , no offset, 6 dec places

Can be called with minimum of 1 parameter. 2 optional parameters can be given; the offset from the and the speed the animation plays at.

Animation sequences are stored as const byte arrays and require a DigitAnimation constructor with the array name and size.

const byte load_1[6] = {
  0b00100000, // 0
  0b00010000, // 1
  0b00001000, // 2
  0b00000100, // 3
  0b00000010, // 4
  0b00000001  // 5
};
DigitAnimation load1 = {load_1, 6}; //byte array, array size

The function is called in void loop(). Multiple instances of different and the same animation can be played simultaneously at different speeds. Speed is set via the 3rd parameter as ms per frame. If no speed is given the animation will .

display.displayAnimateDig(load1); // DigitAnimation object, default offset, default speed (100ms)
display.displayAnimateDig(load1, 4); // DigitAnimation object, offset, default speed (100 ms)
display.displayAnimateDig(load1, 7, 50); // DigitAnimation object, offset, speed (ms)

Can be called with minimum of 1 parameter. 2 optional parameters can be given; the offset from the and the speed the animation plays at.

Animation sequences are stored as 2D const byte arrays. The first value is the segment data (same as DigitAnimation) and the second is the digit to display the data on. An Animation constructor with the array name and size is reqired.

const byte swipe_[16][2] = {
  // segment data, digit selection
  {0b01000000, 0}, // 0
  {0b01000000, 1}, // 1
  {0b01000000, 2}, // 2
  ................
  {0b01000000, 2}, // 2
  {0b01000000, 1}, // 1
  {0b01000000, 0}, // 0
};
Animation swipe = {swipe_, 16}; // byte array, array size

The function is called in void loop(). Multiple instances of different and the same animation can be played simultaneously at different speeds. Speed is set via the 2nd parameter as ms per frame. If no speed is given the animation will .

display.displayAnimate(swipe); // DigitAnimation object, default speed (100 ms)
display.displayAnimate(swipe, 50); // DigitAnimation object, speed (ms)

Tested with Duinotec 8 Digit 7 Segment Display
This Library has been built on top of the ShiftRegister74HC595 Library by Timo Denk (MIT).