Output to the Arduino pins is always Digital, however there are two different types of Digital Output; regular Digital Output and Pulse Width Modulation Output (PWM).

As such, the Ultimate Arduino Handbook is an ever-evolving “labor of love” still in its infancy; as compared to the sheer amount of pure Arduino-related goodness I will be continually adding to in the days ahead (thus the v1.x.x designation).

Arduino is an open source programmable circuit board that can be integrated into a wide variety of makerspace projects both simple and complex. This board contains a microcontroller which is able to be programmed to sense and control objects in the physical world.

After we do this, then our Arduino will be able to make decisions of what to do based off of input from the outside world. In this chapter we will start with a simple circuit and continue to add pieces to it.

satile electronic projects. Released under the Open Source Creative Commons Attribution Share-Alike license, the Arduino is totally Open Source, as desc. ibed later in this chapter. From the board designs and schematic files, to the Arduino programs (known as “sketches”) and libraries.

Chapter 5, “Programming Arduino,” shows you the basics of controlling your Arduino with programs you upload to the board. I’ll take you line by line through an Arduino program so you can learn how it works.

The purpose of this book and the kit is to give you a gentle introduction to the Arduino, electronics and programming in C and to set you up with the necessary skills needed to progress beyond the book and the kit into the world of the Arduino and microcontroller electronics.