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It's a OVI arm with a old broken toy attached (a MOBAT battle tank, still on sale today). Everything is controlled by a Raspberry Pi with a wireless dongle and the camera module. It's possible to control it through a VPN like hamachi even if there's a bit of delay. The interface is made in Python and text only (using ncurses) so it can be accessed via ssh. We added a servo, driven directly by the Rasbperry using servoblaster library, to maneuver the differential gear that gives motion to the tracks. ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/raspitank