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This is my first robot which is still a work in progress. My goal is to create a pet robot that charges itself and navigates autonomously. At the time of this writing I am still working out the kinks in the power system and programming. The body is aprox. 5" cubed not including the wheels and solar panel. It is constructed of HDPE and 0.135" diameter bolts. The power system is a 2W solar panel that charges a supercapacitor bank for a short term energy supply.
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/robot-pet-sparky