Smart Sumo Seeks Central Security

[David] over at Pololu programmed a mini-sumo robot, Zumo Red, with some extra smarts.

The basic rules of sumo robotics is exactly like human sumo – push your competitor out of the ring. [David]’s robot is special because it not only detects the competition border but measures the robot’s angle to the perimeter circle. Knowing the angle, [David]’s robot can turn and run for the center of the arena, the safest location. Once safe it can attack competitors from a symbolic high-ground. Unfortunately, the robot was a light weight in an already low weight class competition. It failed to push any competitors out of the ring and did not fare well in face-to-face battles. 0J6807.550

[David]’s bot uses a three LED line sensor, pretty common today for line following, to detect the boundary. As the ‘bot is moving an outer sensor will detect the border. It continues to drive forward until the middle sensor gets a hit. That provides the measurements need to calculate the angle. Neat and simple! Knowing the angle, the robot scoots to the center to plan its next attack.

[David’s] made the code for his bot’s brain, an Arduino compatible ATmega32U4, available so it will be interesting to see if the competition picks up on this trick.

Zumo Red meets Sumo Necko and a few more competitors in the video after the break.

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Hebocons And Why They Matter

Everyone remembers Battlebots, and those of us feeling the pains of nostalgia have tuned into the recent reboot on ABC. As with the golden age of Battlebots, all robot fighting competitions eventually become a war between machines perfectly designed for the task. In the original run of Battlebots, this meant a bracket full of wedge bots, with the very cool robots eliminated year after year.

You don’t watch NASCAR for the race, you watch it for the crashes, and professional robot fighting competitions will always devolve into a few hundred laps of left turns. Fire and sparks are great, but there is a better robot fighting competition, and this time anyone can get in the game without spending years working on a robot.

It’s called Hebocon, and it’s billed as, ‘a sumo wrestling tournament for those who don’t have the technical skills to actually make robots’. The best translation I’ve seen is, ‘shitty robot battles’, and it’s exactly what robot battles should be: technical mastery overcome by guile, and massive upsets through ingenious strategy. You won’t get fire and sparks, but one thing is certain: no robot will make it out of Hebocon fully functional, but that’s only because they weren’t fully functional to begin with.

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