Scarab is a robot that makes use of two touch sensors to detect obstacles. When its antennal (touch sensor) detects an object in its path, Scarab will go backward first and automatically follow a two-step maneuver to help it overcome the obstacle, which can be a combination of “Left Turn”, “Right Turn”, “Reverse”, or “Stop”. The Scarab robot can be configured with different sets of movements. Requires four (4) "AA" batteries. SOLDERING REQUIRED!