Portal 2 Turret

************************* UPDATED ************************* v4 parts - revised body, wings, pitch frame - reduced the bridging in the body which required revised wings and pitch frame. v4 of rear leg is stretched a little to make more room for a connector. The "leg-rear test" is an option to replace proper rear leg, but allows one to easily plug in the mini-usb connector to power and upload the turret. Use these along with v3 or highest revision of parts. v3 of body incorporates larger eye, more similar to game character. ****************************************************************** This Christmas, I decided to design and build a working, talking Portal turret gun from the game Portal 2. For me, this was an exercise of properly modelling the entire assembly in Fusion 360 first, before building anything. This design uses an Arduino Nano, an MP3 player chip, distance sensor, servos, LEDs and 3D printed parts. The goal here was to make it move in 3 "axes", with spoke