Previously, Cantin even used a similar Arduino-LEGO combination to responded to another LEGO Stack Exchange question. (Forum posters wanted to know if LEGO city-scale wheels could be motorized.

The self balancing robot is equipped with two Lego NXT motors and the open source Hippo-ADK board connects to a Android smartphone or tablet to provide extra processing power and functionality.

Enhancing Lego Mindstorms with Arduino Lego Mindstorms NXT is a sophisticated and fun educational robotics set that teaches kids and adults engineering and programming skills.

Facebook 'likes' come to light with this neat DIY Lego and Arduino project.

While there are a couple of open-source brushless drivers already available, [neuromancer2701] created his own brushless motor controller on an Arduino shield.

How impressive is this? It's how to build what is described as a fully-functional microscope using Arduinos and a Raspberry Pi. There's also LEGO and 3D printing in the mix.

Enrico shows how his Infineon TLE94112EL motor controller shield can be put to work through a simple Arduino sketch.

This machine uses a three-phase Dahlander motor, which has three operation modes: stop, half speed, and full speed. The motor uses a special mechanical switch to select the operating mode.