A little, tiny guy walks along. More servo drives, lots of servo hacking, lots of mechanical stuff.

In addition, a hydraulic servo system located in the wings would activate the Volitan's performance sail system.

Small turbines are pointed by a simple wind vane, while large turbines generally use a wind sensor coupled with a servo motor.

First of all, there was a lot of new manufacturing techniques, not to mention really cheap miniature motors brushless motors, servo motors, stepper motors, that are used in printers and scanners and things like that.