NAO is a programmable 57 cm tall humanoid robot with the following key components:
A body with 25 degrees of freedom (DOF), whose key elements are electric motors and actuators.
A series of sensors - 2 cameras, 4 microphones, a Sonar distance sensor, 2 IR emitters and receivers, 1 inertial board, 9 tactile sensors, 8 pressure sensors.
Various devices to express itself - voice synthesizer, LED lights, 2 high quality speakers.
A CPU (located in the head) which runs a Linux kernel and supports ALDEBARAN’s own proprietary middleware (NAOqi).
A second CPU (located in the torso).
A 55 Watt-Hours battery, giving NAO 1.5 hours autonomy or more depending on the