#1
I've been wanting to get an octave pedal for a while, I just don't want to spend too much cash on it. And the only one I like (from sound clips) is the one mentioned in the thread title. Here's some sound clips, I freakin' love the way this pedal sounds. Fourth section of clips from the top "Octavia MP3 sound samples".

http://www.roger-mayer.co.uk/audio.htm

Since I don't want to spend $200 + on the Roger Mayer pedal (even thoguh it's probably worth it, but I'm cheap) I figured I'd try and build one. Even though I've never built a pedal before, I think I can pull it off if it's not too difficult.

How hard would it be to build one of these? Here's some schematics I found. Do you think they're accurate.

http://bryant02.home.att.net/schematics/mayeroctaviaschem.gif (not sure if this is a schematic or just an example of the board your suppose to use)
http://bryant02.home.att.net/pcbs/mayeroctavialayout.gif
http://www.freeinfosociety.com/electronics/schemview.php?id=653
http://bryant02.home.att.net/schematics/mayeroctaviaschem.gif

Which one of these would be best and easiest to go by? Also what site would be best to get all the parts needed for this?

Thanks a lot for the help.
Hai UG!
#2
Go by the Roger Mayer octavia on Fuzzcentral.
Check the stickies for parts sources, etc. too. It might be a bit tricky for a first build btw.
I'm not very active here on UG currently.
I'm a retired Supermod off to the greener pastures of the real world.
#3
I'm having a little trouble finding what you're talking about. Is the fuzzcentral you mentioned this one

http://www.fuzzcentral.com/index/index44.php

or this one

http://fuzzcentral.tripod.com/

I think you meant he 2nd one though..... I can only seem to find the Tycobrahe Octavia, unless it's basically the same I'm not sure though. They said this on the 2nd site "The story is that the circuit was designed by Roger Mayer to be used by Hendrix and was copied by one of the Tycobrahe engineers when it was brought in for servicing in the US. Do I believe it? Not really. Roger Mayer also claims that the circuit that was copied was actually meant to run off higher voltage, around 24 volts DC. This is a possibility and it may give the pedal a more tame personality. But, for what it's worth, I like the Tycobrahe Octavia just the way it is...loud and aggressive!"

Here's a link to that schematic, details and other stuff. This is what you meant right?

http://fuzzcentral.tripod.com/octavia.html

Does that mean if I follow the schematics on this site it won't sound exactly like the Roger Mayer octavia?

I'm not too worried about screwing up or anything because I plan on taking my time, and doing it very slowly. And for not having any experience at all I seem to be understanding it the more I look and read about it.

Thanks for the help Pink Queen, I had a feeling you'd be helpful, you deserve that avatar. You certainly do pwn.
Hai UG!
Last edited by L_Z_Nut at Jun 2, 2006,
#4

The watermark says fuzzcentral
Just build that

And if you're interested in actually learning alot in the process, read some of www.geofex.com too...really good site.
I'm not very active here on UG currently.
I'm a retired Supermod off to the greener pastures of the real world.
#5
Man that looks super confusing, I'm thinking of getting into moding my pedals instead of sending them out, but I just don't get it. Could one of you help me out and explain to me how to read that. And not to be spam, the Roger Mayer effect is a great pedal, you'll love it.
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#6
Since I'm completely new to this aswell I can't really understand it either. But when I look at that one with this diagram aswell it makes more sense.



Once i figure out the parts I need I'm gonna order them and start. Th only thing I can't seem to understand is how to get a pcb like that one. CAn I get one that's already amde like that or do I have to make it myself? And If I do have to make it myself, how would I do that?
Hai UG!
#7
Search google for info on reading schematics guys...its really the bare minimum amount of knowledge you can have.

And to make a PCB, you put acid-resistant traces on a fiberglass board coated with copper. Then you dip the whole board in a vat of acid, and it eats away the exposed copper, leaving you with the lines that you covered up with etch resist.

Just build the circuit on perfboard man, you don't need to make a PCB.
I'm not very active here on UG currently.
I'm a retired Supermod off to the greener pastures of the real world.
#8
Jeez making a pcb sounds very dangerous what with the acid and such.

I can just get perfboards from radioshack right?

If I get a perfbaord and put everything in like the layout with the parts I put up in my last post it should work right? And with a perfboard there's no need to making any type of layout (like you mentioned with the copper) like this one is there? http://bryant02.home.att.net/pcbs/mayeroctaviapcb.gif it's just solder the parts in order like the pic in my previous post.

Do the parts have to go in exactly like the diagram? Does it matter what order I put them in? I'm assuming it does matter.

Also what amount of hole perfboard should I get? Do I need one bigger then the 1st one in this link (it says it's a 213 hole) http://www.runoffgroove.com/perftemplates.html

Thanks again.
Hai UG!
Last edited by L_Z_Nut at Jun 3, 2006,
#9
^It doesn't matter how you lay them out, they just all have to connect correctly.

And for your first project, I'd get a big one, and then just build it so it fits comfortably. You might have some extra left over, but you can break off the rest of it and use it for your next project
I'm not very active here on UG currently.
I'm a retired Supermod off to the greener pastures of the real world.
#10
So basically they just all have to be soldered in properly. And try not to make it too cramped right? Get a big perfboard you mean, to break off the excess do I crack it by hand or should I use like wire cutters and do it little by little? That's a good idea to make it on a big perfboard though cause I hate small pedals anyways.

You're a life saver Pink Queen.
Hai UG!
#11
i'm not sure how it's recommended to break these boards, but if I were doing it, I'd score the edge where I want to break (with something sharp + ruler) untill I got a good score, then i'd snap it against the edge of a table
#12
^I just use an exacto knive to score it halfway through, breaks really easily.

You can also just use a little hacksaw, thats what I use to cut out my PC boards when I etch them.
I'm not very active here on UG currently.
I'm a retired Supermod off to the greener pastures of the real world.
#13
Sweet I can't wait to get this started. I'm not gonna post a thread at the start and when I'm in the process of making it though. I hate reading threads where you have to wait to see the finished product, the anticipation freakin kills me. So I'll probably just post the process of it after it's done, and it's a good excuse to finally get a mic to post some clips of it.
Hai UG!
Last edited by L_Z_Nut at Jun 3, 2006,