I have and idea for a robot that wold be good in a battle bots competition. I am not in a position to make it right now, so I will post the idea and see if ur interested!
I cant make a picture of it, so ill just try to explain: It starts upright, on two wheels. it has a wheel on the back that it rests
on. On the bottom ( which would be the right side since it is upright) it has a LR Rangefinder camera in a little indent. When it detects a robot coming near, it drives backwards for ,5 seconds, flipping it over. A grabber, hook thing comes down while it flips over, and latches into the robot. it waits .5 seconds and then two axes on the sides come down one at a time. THey go back up, then back down, then back up, then back down, hitting the robot every time. The idea is that it latches on, and then keeps hacking at the robot until it is destroyed.
If u even understand a little of what im saying, plz try and make the robot and post a video! thnx