nILS Posted June 7, 2008 Report Share Posted June 7, 2008 I built a small, cheap and easy to build guitar tuner around a PIC16F84A-04P:In case someone is interested, it's documented here: http://schickt.de/index.php?entry=entry080606-004307Have fun,nILS Quote Link to comment Share on other sites More sharing options...
stryd_one Posted June 7, 2008 Report Share Posted June 7, 2008 Wicked man. Quote Link to comment Share on other sites More sharing options...
/tilted/ Posted June 7, 2008 Report Share Posted June 7, 2008 That's awesome!Can you do me a 6 channel version, for divided pickup use?only kidding. Quote Link to comment Share on other sites More sharing options...
nILS Posted June 7, 2008 Author Report Share Posted June 7, 2008 Can you do me a 6 channel version, for divided pickup use?Hihi, um, not likely with the current hardware as the code space is ~95% full :-) But it should be rather interesting to make a little PCB that simply cleans up and squares the guitar input and hook it up to a mbhpCore - more code mem and way more processing power ;D Quote Link to comment Share on other sites More sharing options...
sineSurfer Posted June 8, 2008 Report Share Posted June 8, 2008 the real deal... sort of: Quote Link to comment Share on other sites More sharing options...
nILS Posted June 8, 2008 Author Report Share Posted June 8, 2008 Looks nice! But, okay, I get the point Freddy ;D I'll put together an update with BIG pads and make a little more room everywhere so it's a bit more DIY-friendly. I never tested the PCB as I use a perfboard version for now. I'll keep you guys posted! Quote Link to comment Share on other sites More sharing options...
cimo Posted June 8, 2008 Report Share Posted June 8, 2008 hithis brings back the same old problem of the different pads/trace size for diy etching or industry grade pcb.My little-big "dream" would be to create a set of libraries and eagle setup so that you could easily change a "normal" .brd into a diy customized version.SimoneThanks Nils i ll build one, sometime.. Quote Link to comment Share on other sites More sharing options...
bugfight Posted June 8, 2008 Report Share Posted June 8, 2008 ...with BIG pads...aha! told ya so...also: bug... upside down... funny!-bugflip Quote Link to comment Share on other sites More sharing options...
nILS Posted June 8, 2008 Author Report Share Posted June 8, 2008 I've modded the most common libs already to have big/small pads, so changing the footprints for that board shouldn't really be much work. The idea of having a "midibox" library has been tossed around a lot too - maybe someone needs to get started with it ;) Quote Link to comment Share on other sites More sharing options...
Davo Posted June 8, 2008 Report Share Posted June 8, 2008 Does anyone here tune their guitar or other stringed instrument with an oscilloscope? Quote Link to comment Share on other sites More sharing options...
/tilted/ Posted June 9, 2008 Report Share Posted June 9, 2008 Does anyone here tune their guitar or other stringed instrument with an oscilloscope?Not yet.In any event, the waveform made by a guitar might be a bit tricky for oscilloscope tuning.How would you do it? with a dual trace, and a reference pitch? Quote Link to comment Share on other sites More sharing options...
nILS Posted June 9, 2008 Author Report Share Posted June 9, 2008 Bigger pads, bigger traces, more spacing. How does that look sS? Quote Link to comment Share on other sites More sharing options...
sineSurfer Posted June 10, 2008 Report Share Posted June 10, 2008 that's better ;) where's the pdf? need to redo some of my boards anyway, don't ask why. Quote Link to comment Share on other sites More sharing options...
nILS Posted June 10, 2008 Author Report Share Posted June 10, 2008 THe pdf will be up after I doube checked everything :-) Prolly this evening. Quote Link to comment Share on other sites More sharing options...
Jaicen Posted June 16, 2008 Report Share Posted June 16, 2008 nILS, that is awesome, how well does it work?? I'll be adding that to my list of things to do for sure! Quote Link to comment Share on other sites More sharing options...
nILS Posted June 16, 2008 Author Report Share Posted June 16, 2008 I've only tried it with two guitars (les paul copy with humbuckers and fender strat) and it works really well so far. Only problem is the low e-String of the les paul - as the lower strings have a lot more noise and overtones than the higher ones. I'm still tweaking the cap and resistor values for the low-pass filter a bit. It does work, and using a flageolett on the 12th fret of the low e-String "solves" the problem. Quote Link to comment Share on other sites More sharing options...
stryd_one Posted June 16, 2008 Report Share Posted June 16, 2008 using a flageolett on the 12th fret of the low e-String "solves" the problem.Workaround != "Solution" (even with the quotes) ;DLOL Quote Link to comment Share on other sites More sharing options...
/tilted/ Posted June 16, 2008 Report Share Posted June 16, 2008 would it be worthwhile adding a high pass as well, to get rid of all sorts of ick, like mains hum, handling noise etc.Also, maybe filtering out the fundamental and tuning to the harmonic would be better?? Quote Link to comment Share on other sites More sharing options...
nILS Posted June 16, 2008 Author Report Share Posted June 16, 2008 "solution" == workaround ;)Apparently there's a lot of (better) alternatives. But most likely not any cheaper/simpler ones. And that was really the focus of that project. It works well and if you're lucky you can get all the parts for ~6EUR. Quote Link to comment Share on other sites More sharing options...
sineSurfer Posted June 16, 2008 Report Share Posted June 16, 2008 you have to make it work without workarounds on the les paul fossi!!! otherwise I won't build it :D Quote Link to comment Share on other sites More sharing options...
/tilted/ Posted June 17, 2008 Report Share Posted June 17, 2008 potentially dumb question:have you tried tuning using only the neck pickup? also, use fingertip rather than a plectrum, also pluck near the middle of the string.fairly boring stuff I know, but it should help a bit Quote Link to comment Share on other sites More sharing options...
doc Posted June 17, 2008 Report Share Posted June 17, 2008 ... or tune 5 strings and use your well tuned ears for the last string ;DgreetsDoc Quote Link to comment Share on other sites More sharing options...
nILS Posted June 17, 2008 Author Report Share Posted June 17, 2008 ... or tune 5 strings and use your well tuned ears for the last string ;D...which doesn't work well in a live situation ;)have you tried tuning using only the neck pickup? also, use fingertip rather than a plectrum, also pluck near the middle of the string.Yeah, I've tried all of the above ;) Doesn't make much of a difference though. Quote Link to comment Share on other sites More sharing options...
nILS Posted June 20, 2008 Author Report Share Posted June 20, 2008 Whee! I just boxed it up and fiddled a bit more with the code (basically I just added some checks to keep the LCD update frequency down a bit to avoid flickering). I'll try to borrow a camera and take some pics as soon as possible ;Dedit: Crappy web-cam picture can be found here Quote Link to comment Share on other sites More sharing options...
nILS Posted June 23, 2008 Author Report Share Posted June 23, 2008 More pictures, taken with a real camera can be found here ;-)Sneak preview: Quote Link to comment Share on other sites More sharing options...
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