Can light aircraft be equipped with yaw damper? The smallest aircraft I know of that has a yaw damper is the Pilatus PC-12.

From an engineering standpoint, how hard is it to make a light-weight solution for a light single engine plane?

The system in mind would also automate the corrections for all left turn tendencies, and coordinate the turns.

The reasoning for it is a no-hands-and-feet autopilot flying, plus the other benefits in takeoff rolls, etc.

The components I'd imagine would be needed:


Slip indicator digital output;
IAS digital output;
Logic board;
Rudder control-tab powered by an electric actuator.
Yes.  The Garmin Perspective avionics suite for the Cirrus SR-22 is equipped with a yaw damper in its GFC-700 AFCS.



The King KAP140 autopilot also offers a yaw damper function for aircraft with a servo controlled rudder trim.