[Al Skierkiewicz]

Only had the wireless bridge last year, radio modems before that.
Velcro is OK but not what you would want if your robot will be crossing the bump. 3M makes a product called Scotchlock. It is like Velcro except it is not a loop and hook fastener. It is available from Digikey with differing holding strengths. However, you really can't beat ty-wraps (wire ties). They are cheap, strong, readily available in different sizes and colors and cut off with a wire cutter.