Bithead942 blogged about his R2-D2 build:
To really bring R2-D2 to life, I knew I had to do some great sturff with electronics. I started with a Taranis X9D controller and a pair of X8R receivers configured for a full 16-channels. I chose this platform mainly for its versatility, but also because I wanted to have separate control of the head and body with one remote controller (so the head can spin a full 360 degrees without tangling the wires).
Project info at Bithead’s blog.
Check out the video after the break.