camera-based vision system (for light detection and navigation)
two microphones, binaural hearing
beat detection (allows pleo to dance and listen to music) - this feature was removed but may be added on again.
eight touch sensors (head, chin, shoulders, back, feet)
four foot switches (surface detection)
fourteen force-feedback sensors, one per joint
orientation tilt sensor for body position
infrared mouth sensor for object detection into mouth
infrared transmit and receive for communication with other Pleos
Mini-USB port for online downloads
SD card slot for Pleo add-ons
infrared detection for external objects
32-bit Atmel ARM 7 microprocessor (main processor for Pleo)
32-bit NXP ARM 7 sub processor (camera system, audio input dedicated processor)
four 8-bit processors (low-level motor control)