Moonwalker II reacts to not one, but two outside sources! Light and Sound! Moonwalker II has combined the technology of two sensors. A whimsical indication of future trends, Moonwalker II begins to walk when it detects a change in light intensity or sound commands. Moonwalker II continues it's four legged voyage until instructed by an internal timer to stop. This kit presents an engaging opportunity to learn about some of the mechanics, operation and history of robots. When assembled, this robot uses a phototransistor to sense changes in light (such as turning on a lamp) and a condenser microphone to sense changes in sound (such as clapping). It converts those stimuli into electronic signals to power a motor, and Moonwalker II will walk forward for a preset time. When it stops, affecting other change in light area light or sound may activate it again. The sensors can be adjusted for different sensitivity levels.
Specs
Movement: Two legs on each side by crank shaft
Control: One sound sensor including condenser microphone/transistor; Two light sensor/phototransistor
Power Source: One "AA" battery (not included)
Power Consumption: Approx. 210mA
Size: 130 x 100 mm
Piece count: 98
$46.95 
Great Robot!