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Pleo is a robotic dinosaur designed to emulate the appearance and behavior of a week-old baby Camarasaurus.

It was designed by Caleb Chung, the co-creator of the Furby, and is manufactured by Ugobe. Chung selected this species of dinosaur because its body shape, stocky head, and relatively large cranium made it ideal for concealing the sensors and motors needed for lifelike animation. According to Ugobe, each Pleo will "learn" from its experiences and environment through a sophisticated artificial intelligence and develop an individual personality.

Pleo was unveiled on February 7, 2006 at the DEMO Conference in Scottsdale, Arizona and was expected to come on the Indian and American markets around Fall 2007.

Pleo shipments started on December 5, 2007. The robot is software-upgradeable via SD card or USB interfaces and costs $349 USD.

Ugobe will encourage user modifications of the robot's firmware, providing a graphical interface for home users and an API for programmers.

Ugobe develops robotic technology to animate robots into lifelike creatures with organic movement and adaptable behaviors. Ugobe calls its robots "Life Forms," powered by its "Life OS".


Ugobe's designs combined sensory, articulation, and neuronetics to create the lifelike appearance of its robots. In developing Pleo, Ugobe paid particular attention to the biological and neurological systems of the Camarasaurus, and "re-interpreted" those elements through hardware and software. Pleo was engineered by a group of robotics specialists, animators, technologists, scientists, biologists, and programmers. Pleo is intented to be a fun experience for everyone.

However, it should be noted by any potential buyers that the paint on the skin has been seen to wear off within the first 24 hours and flaking from the paint on the teeth has also found similar problems according to many Pleo owners (http://forums.pleoworld.com/showthread.php?t=503, retrieved 20th Dec, 2007)


  • camera-based vision system (for light detection and navigation)
  • two microphones, binaural hearingbeat 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 mouthinfrared 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)
Official Pleo site: www.pleoworld.com

Video: Pleo hatches!

Video: Taking Pleo out of the box

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