My mini Sumo is one of those projects that may happen,... some day. Till then its just a robot platform i have not yet put brain into. What you see to the left is a fairly straight forward "tiered" design. Drive train on the bottom tier, batteries and sensors on the second tier, and then the third tier was designed around the placement of an OOPic microcontroller, and finally the H-bridge board was to be placed on top with a cool heat sink to look like a "jared" brain. As you can see it has not yet gotten past the basic platform which is made out of corrugated plastic sheet.

I have also played around with a "fall down" design, again only getting to the basic platform design level. To your right you see a basic form I built out of hobby wood. The fall down design works by placing your robot on its but end so that it starts the competition within the confines of the rules, but as soon as the combat starts it knocks itself down to be low to the ground with a lower center of gravity and harder to detect.

And then there is this guy who I discovered at a garage sale one Sunday afternoon. I am still trying to decide weather or not his drive train limitations are worth the effort of hacking him into a sumo,... but really wouldn't it be cool even if he never won.

I would like to say that one day ill get off my but and build one of these guys, but really I have no idea when Ill be drawn back to this project, till then they sit on my half built projects shelf collecting dust.