At sometime or another you may run out of pins on your Arduino board and need to extend it with shift registers. This example is based on the 74HC595. The datasheet refers to the 74HC595 as an "8-bit serial-in, serial or parallel-out shift register with output latches; 3-state."

The solution is to use a ‘shift register,’ which allows you to add more I/O pins to the Arduino (or any microcontroller). By far the most widely used shift register is the 74HC595, also known as just “595”. The 74HC595 controls eight different output pins with only three input pins.

74HC595 Interfacing with 7 Segment Display and Arduino. In this section, we will learn to interface 74HC595 with a 7-segment display and Arduino. By using a 74HC595 shift register to drive 7-segment displays with Arduino, we can save GPIO pins of Arduino. Why use 74HC595 to drive 7-Segment Displays?

Feb 2, 2025 · In this project, we will be interfacing 74HC595 Shift Register with Arduino. We will use 74HC595 with Arduino and multiple LEDs to create few example projects. The Arduino provides a good number of I/O pins, making it ideal for controlling various components like LEDs, sensors, and servos.

Mar 7, 2020 · The 74HC595 allows us to expand the number of digital I/O ports on our Arduino. In these experiments, we will be using it to drive some LEDs, which we will control using an Arduino. Arduino & 74HC595 Hookup. Here is how we will be hooking up …

Nov 27, 2018 · This post shows how to build a simple digital counter using Arduino, common anode 7-segment display with 4 digits, and 74HC595 shift register. Hardware Required: 4 x PNP transistor (2SA1015, 2S9015, 2N3906 …) The image …

In this tutorial I'll show you how to drive up to 16 LEDs with one 74HC595 using a technique called multiplexing. In the end, all 16 LEDs will require only three of the Arduino's available digital pins.

A Project using the 74HC595 arduino for 7 segment Display. This project shows how to wire up and control 16 LEDs and two seven segment displays using 4 74HC595 chips. There are three sets of code going through 8,16 and 32 outputs to allow easy wiring of the devices.

74HC595 shift register IC can be used to increase Arduino digital pins. Learn how 74HC595 works and how to use it with Arduino in this tutorial

In this guide I will introduce the cheap and useful IC (Integrated Circuit) nicknamed “595” – a Serial-to-Parallel chip, which is commonly used as an output port expander for Arduino and other MCU projects.