Weasel Robot is a tenacious little robot warrior that uses two sensors that allow it to “see” a line or “feel” its way along walls and around corners. Two motors and contact sensor activate the wall sensing micro switch to control the motors’ on/off operation that determines the path of a wall.  Underneath Weasel, its photo-transistors that enable it to detect and follow a black line.  Its three-speed gearbox will help navigate at the velocity you determine.

2 AA battery required
Basic tools required
92 parts