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."

Fortunately, there’s a clever solution to this problem! You can use something called a shift register, which lets you add more I/O pins to your Arduino (or any microcontroller). The most popular and widely used shift register is the 74HC595, often simply referred to as the “595”.

Feb 2, 2025 · This tutorial shows how to connect the 74HC595 shift register to an Arduino and use it in five fun projects: LED Chaser, Heartbeat LED Effect, PWM Brightness Control, LED Wave Effect, and LED Larson Scanner.

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

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?

Aug 13, 2024 · To interface peripherals, just plug them with Q0 to Q7 and pulse input from arduino as hexadecimal numbers using shutout command as shown in the code. Here is a code Example to turn on 8 LEDs interfaced with 74HC595 register using arduino - OUTPUT. Various simple to complex can be made, with using the shift register.

Wiring a 74HC595 Shift Register to an Arduino. Now that we’ve covered the working and functional modes of the 74HC595 shift register, let’s start interfacing it with an Arduino UNO. We will be controlling all 8 outputs of the shift register using three pins of Arduino. We will also control the brightness of the LED using the PWM pin of Arduino.

Mar 7, 2020 · There are many ways to solve these issues, including running the LEDs ina matrix or using a shift register. The shift register will allow you to address a large number of LEDs using only a few Arduino I/O pins.

Dec 3, 2012 · In this lesson, you will learn how to use eight LEDs using the 74HC595 shift register chip.

Oct 12, 2022 · In this tutorial you will learn how to use the 74HC595 Shift Register to expand the number of outputs of your Arduino. The popular Arduino UNO has 14 GPIO pins you can use to output (or input) data. For many cases this is a sufficient number of …