Ultrasonic rangers for obstacle avoidance

[Mib]

We're thinking about mounting 2 of them at the corners of our bot, so we can sense the wall. Maybe just run around the track as one of our hybrid modes (1ish laps), and turning based on objects intersecting. We're also mulling over the possibilities of one mounted on the head to detect objects strait in front of us (other robots, walls, etc).

But realistically, I don't think it's feasible to safely navigated near the opponents during the hybrid mode. Also, as a saftey feature, we're considering one button be designated towards 2-5 second slowdown..pause...speedup phase so we can avoid hitting other robots.