Newb in need of technical advice concerning routeing Pickup Sig in Guitar - Page 1
Forum section: electronics / beginners

author: D4RKH0R53
author_rank: Newbie
timestamp: June 22, 2012, 02:32:35 am
content: Hi Everyone,I appreciate any useful feedback and advice on this project as honestly it has become the bane of my existence and a real downer everytime i look at my half assembled guitar. Guitar? yes guitar and I know one might be tempted to dismiss this post or just refer me to the myriad of diy guitar and or stompbox forums; many of which I'm a member; yet alas I've had little sucess with them and Only end up more confused majority of the time.The cause of my predicament is my own damned ambition ( coupled with a lack of technical knowledge and experience). The wiring on my SG Epiphone needed replacing and the compartments needed shielding.easy enough, one would think, and it wouldve been except i bought another higher end humbucker pickup to install and decided I would have 2 humbuckers and a single coil pickup but I then became fascinated by the different wiring combinations that achieve distinctly different tone from the guitar eg: all series, all parallel, some series some parallel, split coils, single coils, different caps, vari tone selectors etc. I could go on 4eva as there are hundreds of different ways to wire a guitar. My problem was i got greedy I figured that there must be a way to isolate each coil of each humbkr and along with the single coil pickup I wanted to be able to take the two wires that lead from each pkup and connect them to a type of selector circuit that could connect the pairs in all the different combos w/ separate volumes and a varitone. traditionally its done with switches and/ or rotary selectors and/ or push pull pots etc. What I really want to know is can i use my arduino to route the analog signals in all diff. ways and combos and possibly scroll through the settings with a mom. push button? Or something like it? I was looking into little ic based relays and analog muxs and demuxs and digital switch ics but I don't have the experience or expertise necessary to design a circuit to achieve the goals I related above. Can an Arduino just handle the switching between connections while leaving the audio signal from the pickups relatively unchanged and remain analog? Could it also be used to act as a bit of a pre amp or booster so theres no chance of signal loss from the complexity of the circuit?I have two arduino compatable boards at hand an Uno and a Leo-stick usb thumb drive style board.If you have other solutions possibly simpler or more elegant or using completely different tech Im interested Im prepared to discover that Im miles off track and I need to buy different parts to finish this project. I really do want to make it rather than buy a commercial product but if you know of one that achieves what i want id like to hear about that too.Thank you for reading through this short novel of a post I hope you were able to glean the gist of the issue and can at least point me in the right direction to research it.

author: Rerouter
author_rank: Super Contributor
timestamp: June 22, 2012, 02:42:36 am
content: take a look at thesehttp://www.maxim-ic.com/datasheet/index.mvp/id/1352it would be easy enough to manage serial / parallel with just 1 74HC4053however for the other tuning and trimming components, we would really need some schematics of various way they can be hooked up, though in practice i would guess some low voltage mosfets fed of some digital multiplexers, switching on or off various parts,the arduino gives out 5V compatible logic signals, so each of those devices should work fine (when powered off 5V)edit: if you wanted to be fancy with every combination available, i would recommend a shift register WITH AN OUTPUT ENABLE PIN that way you can shift in the new combination either on or off on each component, and then apply it, rather than a wash as various combinations cycle through,