Seiko Epson Corp. announced Wednesday it had developed the world's lightest flying microrobot, with a weight of just 8.6 grams without its battery, or 12.3 grams with the battery installed.
The robot is 13.6 centimeters in diameter and 8.5 centimeters tall. It is powered by a lithium battery and flies and hovers using contrarotating propellers.
http://www.yomiuri.co.jp/newse/20040820wo12.htm
http://news.bbc.co.uk/2/hi/technology/3579232.stm
http://news.xinhuanet.com/english/2004-08/18/content_1816189.htm
The robot is 13.6 centimeters in diameter and 8.5 centimeters tall. It is powered by a lithium battery and flies and hovers using contrarotating propellers.
http://www.yomiuri.co.jp/newse/20040820wo12.htm
http://news.bbc.co.uk/2/hi/technology/3579232.stm
http://news.xinhuanet.com/english/2004-08/18/content_1816189.htm