2nd Generation
Release date: November 2001
Discontinued: December 2001 - September 2003
Units produced: ?

The ERS-220 was released by Sony in November 2001. Due to their low sales and production numbers, it is often considered to be one of the rarest AIBO models.


Released shortly after the ERS-311 and ERS-312 on 11/8/2001, the ERS-220 aimed to embrace robotic and mechanical design. The ERS-220A model began preorder on July 1st in the US and EU.


A collage of Kawamori's work on AIBO

The ERS-220 was designed by Japanese designer, artist, and producer Shoji Kawamori. Notably, he also created the anime series Macross and worked on mechanical design for Ghost in the Shell.
Unlike other AIBO models, the ERS-220 was not designed to appear at all organic but instead took a directly mecha-inspired approach.



The hardware of the ERS-220 is identical to the ERS-210 with the exclusion of four degrees of freedom (no moving "tail" module or articulated ears). A variety of LEDs were added that were not present on the ERS-210.

Processor 64-bit RISC processor
Memory 32MB
Inputs PC Card Type III
Charging terminal
Camera 100,000-pixel CMOS image sensor
Audio Input Stereo microphone
Audio output Speaker
Sensors Thermometric sensor
Infrared distance sensor
Acceleration sensor
Pressure sensor (on the head), with switches on the chin, back, and paws
Vibration sensor
Degrees of freedom Head: 3 degrees of freedom
Retractable head light: 1 degree of freedom
Leg: 16 degrees of freedom per leg
(20 degrees of freedom in total)
Power consumption Approx 9 W (in normal mode)



Along with ERS-210's, the ERS-220 was released as a Supercore AIBO. However, the ERS-220 was not utilized in RoboCup competition. Worth noting is the ERS-220's dependence on OPEN-R 1.1.3, which shipped out-of-the box with Supercore modules but not the initial releases of 2x0 cores.

Special Editions[edit]

The ERS-220 was also released as the Transformation Kit, or ERS-220E1 (referred to as ERS-220/TK frequently by the community.) The kit included the ERS-220's modular components (head, tail, legs) without a core as to offer a way for ERS-210 owners to update, if desired, to the newer AIBO.


List of 2x AIBOWARE


See: Troubleshooting (2X)