The Boe consists of an aluminum frame, upon which two servomotors, a battery holder, and a BASIC Stamp 2 microcontroller board are mounted.

Over the years Parallax has developed numerous add-ons. One I like best is the servo-operated gripper, which makes the Boe-Bot look like a nasty pincher bug. The gripper can lift small objects like chess pieces and ping pong balls, but it won’t fetch a beer — unless it’s a very small beer from a very short fridge.

Suitable for first-time builders, the Boe-Bot takes about 2 hours to build. The gripper kit requires a bit more skill; plan on another hour. Other nifty accessories include a six-legged walker kit and an infrared line-following module.