I have been attempting to make musical effects and after determining that the self oscillations from a bandaxall circuit are unavoidable, I designed my own tone control bassed on passive filters with a buffer on their inputs and amplifiers on their outputs. While it did work and work very well, I would like to be able to “tune” all of the filtering elements simultaneously. I would like a recomendation for a microcontroller and some digital potentiometers. I would like for it to be able to have some form of feedback to check the resistances to make sure the filters are “in tune” with each other and to be able to control it via some form of simple voltage source to set the resistances, which I need a range of 1KΩ, 2KΩ, 50KΩ, and 100KΩ. Thank you very much for your time.
Choose devices that have a status of “Active” and which are available as a regularly-stocked item, to reduce procurement-related complications. This leaves a person with abut 21K microcontroller options to choose from and about 1.3K digital potentiometer products
Beyond this, your personal preferences and the constraints of your design goals will drive further selection criteria. Put differently, it’s up to you and you alone to understand the options available and make a choice as to what’s suitable for your needs.
That said, the arduino ecosystem is very popular with folks dipping a toe into the world of embedded development, because of the large quantity of beginner-friendly resources available and extensive abstraction layers that allow people to achieve complex outcomes without having to understand much about how it works under the hood. See arduino.cc for further info.
As for digital pots, the application notes developed by the manufacturers of those products and the product datasheets themselves are probbly the best resources for study. Putting something like “digital potentiometer application note pdf” into your search engine of choice should turn up a variety of threads a person can start pulling on.