If you are the original author, please access your User Control Panel and update it.
Tenacious A is one of "twins" -- a pair of hacked Morphibian R/C toys. These can be had for about US$21, are differentially steered, four-wheel drive, with lots of room inside for circuitry, sensors, etc. The are designed to be waterproof, and while I had to remove some of the water proofing to make room for infrared sensors, they are very tough physically and can be handled by kids, can fall off tables, run straight into walls and keep going. We made the subsumption programming very robust; ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/tenacious-a