Turns out there are many ways to modify the Project Ara smartphone, much more so than anyone else thought of before Google recently unveiled the first developer tools and a few reference images. There are plenty of independent configurations available (seen after the break), as well as the ability to have one or more batteries in the phone, so that a dead battery could be switched out for a full one, without ever restarting the phone.
The means of which a part is added to the Project Ara phone (camera, processor, radio, etc.) relies on very specific aesthetics that Google has mentioned: a rectilinear footprint, a 1.5mm corner curvature, and that a base that must be a single piece of machined 6061 aluminum. This allows for mini, medium, and large Project Ara smartphones to be built by Google, and for their endoskeletons to be heavily modified by the end-user.
Currently, the Module Development Kit is available for download, meanwhile Google continues to work on Project Ara, letting app developers know that, “consequently, Ara devices are anticipated to be compatible with most standard [Android] apps”.
Via: Project Ara