I know of only one person who would be able to build this thing – my buddy Paul – but I would totally grab a beer and watch him solder everything together and then ride around on this thing like a little freak. Heck, if you try to build this, tell me and we’ll come by and film you riding it. Seriously.
The instructions are pretty complex and you need quite a few parts, including a powerful motor and a go kart wheel.
It uses an Arduino board and an motor controller to handle the self-righting systems and requires a pretty heavy motor and battery. The self balancing circuit is right here