Arduino's ubiquity and simplicity has led to a gigantic surge in the use of microcontrollers to build programmable electronics project. Despite the low cost of Arduino, you're still committing about $30 worth of hardware every time you build a project that has an Arduino inside. This is where Adafruit's Trinket comes in. Arduino-compatible, one-third the price, and low-power, the Trinket lets you make inexpensive and powerful programmable electronic projects. Written by one of the authors of Adafruit's Trinket documentation, Getting Started with Trinket gets you up and running quickly with this board, and gives you some great projects to inspire your own creations.
Engineer and Maker Anne Barela is currently a consultant for Adafruit Industries, LLC. She retired in 2018 as a senior Foreign Service Officer and Security Engineering Officer for the U.S. Department of State. Anne is a graduate of Whitman College (mathematics/physics) and the California Institute of Technology (electrical engineering). She has also worked at Hewlett-Packard, the Caltech/NASA Jet Propulsion Laboratory, and Boeing. An avid electronics enthusiast, she started with a workbench and Radio Shack parts in high school. Anne is the author of the books Make: Getting Started with Adafruit Trinket (as Mike Barela) and Make: Getting Started with the Adafruit Circuit Playground Express. In addition, she has authored tutorials on the Adafruit Learning System at learn.adafruit.com.