![]() With two shift registers connected in series, we can accomplish the task of controlling the 16 LEDs with using only 3 I/O pins. In the event that you don’t have 16 I/O pins available, this is where the shift register comes in handy. If your project needs to control 16 individual LEDs, that would normally require 16 pins of an Arduino. Shift registers are often used for the purpose of saving pins on the microcontroller, as every microcontroller has a limited number of I/O pins (GPIO). If you want to know more about bit-shifting, this resource from Wikipedia is invaluable. All of this is accomplished by what is known as bit-shifting. And if you need more than 8 additional I/O lines, you can easily daisychain as many shift registers as you like and create tons of I/O lines. The 595 essentially controls eight separate output pins, using only three input pins. And the 74HC595 shift register (nicknamed ‘595’) is one of the most famous among all. A shift register allows you to expand the number of I/O pins you can use from your Arduino (or any microcontroller for that matter). The solution for this is to use a ‘Shift Register’. ![]() Have you ever found yourself wanting to control lots of LED’s? Or just needed more I/O pins to control buttons, sensors, servos all at once? Well, you could wire up few sensors to Arduino pins, but you would rapidly start to run out of pins on your Arduino.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |