If you do like electronics projects for the sake of electronics
projects, feedback control is an interesting way to go, though.
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Talking rotor position feedback ,instead of the traditional potmeter in
bridge circuit with analogue meter readout ,you could try a low cost
synchro system utilising 2 stepper motors from discarded hard drives ,
dot-matrix printers or flat bed scanners ,with 1 stepper motor
mechanically coupled (either directly or via a reversed rotational
reducer) to the rotor ,the other in the shack as a readout device. The
circuit I found on the web (via Google)needs 5 wires between the stepper
motor coupled to the rotor and the control unit ,located with the other
stepper motor in the shack.
The circuit includes 4 TIP120 NPN transistors 2 LM324 dual Opamps and a
few diodes and resistors. The stepper motor in the shack could either be
provided with a rotating or sliding pointer ( the latter from an old
1950-60s radio) , or be mechanically linked to a counter (for example
from a discarded tape recorder)

A potential 'recycled components' project.

Frank GM0CSZ / KN6WH