Most of the technology world is familiar with open source software and the reasons why, in some eyes, it’s more appealing than proprietary software. When software’s source code is available for anyone to inspect, it can be examined for security flaws, altered to suit user wishes, or used as the basis for a new product.

Less well-known is the concept behind open source hardware, such as Arduino. Massimo Banzi, co-creator of Arduino, spoke with Ars this month about the importance of open hardware and a variety of other topics related to Arduino. As an “open source electronic prototyping platform,” Arduino releases all of its hardware design files under a Creative Commons license, and the software needed to run Arduino systems is released under an open source software license. That includes an Arduino development environment that helps users create robots or any other sort of electronics project they can dream up.

So just like with open source software, people can and do make derivatives of Arduino boards or entirely new products powered by Arduino technology.