Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Arduino Development Cookbook

You're reading from   Arduino Development Cookbook Over 50 hands-on recipes to quickly build and understand Arduino projects, from the simplest to the most extraordinary

Arrow left icon
Product type Paperback
Published in Apr 2015
Publisher
ISBN-13 9781783982943
Length 246 pages
Edition 1st Edition
Tools
Concepts
Arrow right icon
Author (1):
Arrow left icon
Cornel M Amariei Cornel M Amariei
Author Profile Icon Cornel M Amariei
Cornel M Amariei
Arrow right icon
View More author details
Toc

Table of Contents (11) Chapters Close

Preface 1. Power on – Arduino Basics FREE CHAPTER 2. Blinking LEDs 3. Working with Buttons 4. Sensors 5. Motor Control 6. More Output Devices 7. Digital Communication with Arduino 8. Hacking A. Electronics – the Basics Index

Simple sensor – potentiometer


A potentiometer, also called a variable resistor, is a basic component that allows us to modify its internal resistance. We can use it to adjust settings in our program at any time. Or, we can use them to control things, such as a robotic hand or the intensity of a particular light. Here, we will make the built-in LED blink with a frequency that we will control via the potentiometer. We will also print the values over serial.

Getting ready

Following are the ingredients required for this recipe:

  • An Arduino board connected to a computer via USB

  • Jumper wires

  • A 10K–1M ohm potentiometer/variable resistor

How to do it…

Hooking up a potentiometer is easy, and here are the steps:

  1. The potentiometer has three terminals. Connect the terminal in the center to an analog pin; here, we will connect it to A2.

  2. Connect one of the other terminals to GND.

  3. Connect the third terminal to 5V.

Schematic

This is one possible implementation using pin A2 as the analog input:

Here is an example of how...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at R$50/month. Cancel anytime