DAGU Playful Puppy Quadruped Robot kit consists of an ATmege8, 10 servo driver, IR compound eye and etc. This small quadruped robot is easy to assemble with no soldering required and can be programmed using the Arduino IDE and a USB cable. The robot detects and tracks movement of nearby objects using a simple infrared compound eye. This sensor measured the reflected light from its infrared LEDs using 4 pairs of photo transistors. As sunlight is a strong source of infrared light this sensor will not work outdoors.