A self balancing two-wheel robot that wobbles, hence the name WobblyBot.
Quite possibly the simplest design for a robot that could (sort of) balance itself on two wheels, without the use of accelerometer, gyroscope or microcontroller.
A great weekend project, and do check out the video to see it in action. And why Domo Kun? Because I think it's cute :) You can pretty much change the WobblyBot into any character you like.
Visit here for more build photos and tips.How It Works
The robot is essentially a simple pendulum, with the pivot at the wheel axle. The bottom part of the robot’s body is significantly heavier than the upper part of it. This serves as a counter weight, keeping the entire body upright, hence the balancing act.