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Shift Registers Tutorial with Arduino

LESSON 14: Expand your Pins with Shift Registers

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Now that you know how to connect a variety of components to your Arduino, you’ll be inspired to build larger and more complex projects. But what happens if you don’t have enough pins for your creation? That’s where shift registers are helpful. They only require 3 pins on your Arduino and you get 8 outputs – not a bad deal! We’ll be working with the 74HC595, or 595 for short, one of the most popular ones for electronics projects.


You’ll be able to follow along and build all the projects featured in this course with the ELEGOO UNO Project Super Starter Kit.


  1. Introduction to how shift registers work
  2. Connecting a shift register to the Arduino
  3. Understanding hexidecimals
  4. Controlling 8 LEDs using the shift register
  5. Performing logical shift right (LSR) and logical shift left (LSL) functions
  6. Performing Circular Shift Left (CSL) and Circular Shift Right (CSR) functions
  7. Using the 595 with other components
  8. Assignment



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