Glossary

Key Points

Introduction	Arduinos are very simple devices for physical computing. Arduinos are at the center of a universe of resources for making projects.
Installing arduino-cli	There are graphical and command-line packages to program Arduinos Arduino software uses a serial connection to program the device.
First Sketch	Arduino programs are called ‘sketches’ with a program file inside a directory. Arduino programs have two functions: a ‘setup’ function that is run once, and a ‘loop’ function that runs forever.
Using the Breadboard	Breadboards allow for complex, temporary connections. Pins can be turned ON or OFF. Pulse Width Modulation turns pins on and off really fast.
Using Digital and Analog Pins	Digital pins are either HIGH or LOW while analog pins reflect a range from 0-1023.
Using Serial Connections	A serial connection is birectional. Serial connections exchange individual bytes. Higher-level functions can help parse serial input.
Using Arduino Libraries	Libraries can provide additional functionality, especially for hardware, but also for functionality.
Using git for Arduino programs	Maintain all your programming in version control.

FQBN: Fully Qualified Board Name Potentiometer; A device that systematically varies resistance. Sketch; A program for the Arduino.