We have seen how to build an app-controlled BB-8 droid, but the following rolling should be more suitable if you have a preference for bricks.
This is an ongoing Star Wars themed LEGO project from LEGO Ideas. As we can see from the images, the completed LEGO model is BB-8, the symbolic droid in Star Wars: The Force Awakens, and the mini BB-8 replicates all details and colors from the original droid using 100% genuine LEGO parts. More importantly, same as Sphero’s app-enabled BB-8, the LEGO BB-8 is able to move with his head staying up on top. To achieve the feature, the droid features built-in LEGO weights and carefully arranged magnets, and the tiny LEGO wheels make the dome head skate on top of the body.
Moreover, the rolling BB-8 LEGO set also comes with a display stand with a crank that makes the droid roll with ease, and it can also be used to hold two BB-8’s attachable arms. In addition, the rolling BB-8 LEGO set contains around 180 pieces. Now you can head to LEGO Ideas, supporting the project, which helps it become reality in near future.