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When I saw the "Mr. General" robot by oddbot (link), I loved it. I thought it is "expressive", a skill difficult to find in a robot built at home. So I built my personal version of Mr.General with Arduino. The robot is based on compound-eye sensor from Dagu. Pictures, details, code here: http://robottini.altervista.org/diffident-robot
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/diffident-robot