Build Your Own Self-Balancing Unicycle

Robot hacker Trevor Blackwell is at it again, this time with a self-balancing Eunicycle. Blackwell writes, Some time ago I built a self-balancing two-wheeled scooter. Since then I realised that two wheels are redundant, and only a single wheel is needed to make a rideable vehicle. A vehicle with a single wheel is much smaller and lighter. It weighs under 30 lbs and is easily carried with one hand when going up stairs or on public transportation