Mindstorms EV3 and their motors
The LEGO® Mindstorms is a very nice compact and easy to program set, with a lot of sensors (both, LEGO own as well as third-party, see e.g. http://www.mindsensors.com/).
When talking about motors, the air gets thin pretty fast. I mean, the LEGO own motors are cool, but there are only two sizes that are compatible with EV3 and the bigger one has rather sloppy gears, so although LEGO claims it has 1° of accuracy, it has easily 10° of (undetectable) backlash, meaning it can be considered halfway precise only if it is always loaded in the same direction – which for a two-wheeled tank-style robot is never the case.
So it got me thinking: how hard can it be to connect a third party motor?