It’s harder to get an open source e-reader than you might think. Kindles are popular, but they lock you into Amazon’s ecosystem. Amazon’s books come with digital rights protection and the company can remove them from your device whenever it wants. Those problems exist on tablets from Barnes and Nobles, Google, and Apple, too. When it comes to open source reading, there’s just no good options. The Open Book Project wants to change that.

As first spotted by Hackster.io, “the Open Book aims to be a simple device that anyone with a soldering iron can build for themselves,” designer Joey Castillo said on the GitHub repository for the project. Castillo is still prototyping the device, and his goal is to build an e-reader that anyone can redesign, recode, or accessorize as they see fit. Of course, it should be able to read books in any format, from ePub to MOBI and everything in between.

Image: Joey Castillo