[youtube https://www.youtube.com/watch?v=U2oA7G4d_ok?feature=oembed&enablejsapi=1&origin=https://safe.txmblr.com&wmode=opaque&w=250&h=141] For $299 assembled, the Witespy Flip quadcopter is a great little aircraft. I attached a GoPro HERO 3 to the frame using a velcro strap and did a few nervous flips with it—nervous, because the quad was really heavy. I was using a 2200MAh 3S battery which, combined with the GoPro, seems to ...