An intelligent robot that knows how to avoid interference. Spider emits an infrared beam that detects obstacles in its way. When such an obstacle is detected, Spider automatically turns left and continues on. Movement: 3 legs on each side, crank motion. Control: Infrared sensor, including infrared diode/photo diode/IC; Power source: 1 "9V" and 2 "AA" batteries (not included). Skill Level IIPrice: $66.99
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