Have you built the mechanical hardware yet?, obviously you couldn't use radio control servos for it, as they don't rotate far enough.
I have modified sub-micro servos for full rotation before, it will work.
Do you really use different tuning schemes so much?
Yes. I play a wide variety of modern rock, metal and electronic genres.
, the usual method is to have two guitars! - my daughter plays bass , and has written various songs that require different tunings, as well as playing covers that do - but she usually just retunes on the last note of the previous song. She has pretty good pitch, and can retune a string as the previous note dies away - pretty impressive to watch. In one of her previous bands the guitarist used to pass her the guitar to tune - it was faster Melissa doing it by ear than using a tuner, even including the time passing the guitar over.
You must be proud. When I have a kid, I'm going to make sure he/she is raised as a dedicated and far-better-than-me musician. I started playing when I was 15 (a little late imo); I'm a decent guitar player, and a pretty good electronic music composer. When it comes to perfect pitch for tuning though, I don't have the trained or innate ears for that.
This project is for the less fortunate like me...
No, it's external controlled by the PIC - I would suggest you try something similar, and it may be worth buying the back issue(s).
I think that project is a little ahead of my skills, especially since it has been a long time since i coded any assembly. Maybe, I will look into it when I decide to improve my system.
Are EPE issues electronic or prints?
Anyways, here is the latest version of my circuit, it's a little bit more complicated. (Sorry for that...)
I calculated the ranges of each string in different tunings to develop as little number of filters as possible. I came up with a
3 low-pass filter design that will filter for 2 strings each while attenuating the 2nd and higher order harmonics.
I greatly appreciate all your inputs,