This guide could be of interest: https://neurochrome.com/pages/the-ultimate-guide-to-preamp-design
If you want a remote controlled potentiometer, I'd use a motorized pot. Or, if you're fully committed to the solution with the stepper motor, make sure you use a slip clutch so you don't rip the pot apart when it reaches the end stop.
Tom
If you want a remote controlled potentiometer, I'd use a motorized pot. Or, if you're fully committed to the solution with the stepper motor, make sure you use a slip clutch so you don't rip the pot apart when it reaches the end stop.
Tom
