[dpeterson3]

I was wonder what sensors everyone has used in the past to detect other bots. It would be great for auton if our bot could detect the crashed bot infront of it and not add to the pile (I'm not trying to offned anyone, but accidents always happen). I don't want to use the camera because of the high overhead. Here are some thought I had.
Heat signurtes of other bots (not sure if the are high enough, though)
Electric or magnetic field sensors
Transducer array
Vibration meter (see if there are vibrations different from my own)
Would like an infared or radio reaper, but that is illegal
Could we use the gaming adapter to sense the strength of other bot's adapters and use that to tell when we are close?

I just want to see how others have done it.