DIYguitarist.com

[Foona]

I sat last night reading through this page.
Building a Wah Pedal From Scratch

I then grabbed the PDF file containing the PCB layout.
Iv'e been into DIY electronics for a year,
so sometimes i come accross stuff i do not reckognise.

The symbol marked in this picture, what kind of component is it?




Im also wondering..
Im trying to go for a pedal that sound like a simple CryBaby with Q control.
Is this curcuit the right one for me?

[Paul Marossy]

That symbol is just a resistor standing up instead of laying down.

This circuit doesn't really sound that much like a CryBaby. Why not just build the CryBaby circuit and add a "Q" control to it? Inductors aren't that hard to get a hold of...
_________________
Paul Marossy
www.DIYguitarist.com

[Foona]

Oh...

I realize now, that symbol even have the same color as the other resistor symbols.
Thanxs for your help Mr.Marossy, however i have to ask you for your assitance yet once again.

Iv'e searched the web for cry-baby pedals schematics but,
i can't seem to find a schematic with the "Q".

Finding the original Dunlop Wah ain't to hard though.
Let's say i grab this schematic.
PDF: Cry for me

I can read schematics yes, but i cannot understand it fully.

Where do i put the pot for the "Q" control?
_________________
*Knowledge is power*

[Paul Marossy]

[Foona]

It makes perfect sense, thank you.
_________________
*Knowledge is power*

[Paul Marossy]

No problem.
_________________
Paul Marossy
www.DIYguitarist.com

[Foona]

I forgot to ask.

Am i supposed to use Logarithmic pots or linear pots?

<add>

looks like i have a few more questions than that.

Regarding the caps.

It looks like all of these caps are ceramic caps,
though the 4.7uF cap elude me.
Is this an electrolytic cap?

Regarding the 0,011uF cap, could i use a 0,01uF cap instead?

Also, im having some trouble with finding a 660mH inductor at my local electronics store. How much is 660mH in uH?

Eventhough iv'e built alot of "cool stuff", im still a n00b
_________________
*Knowledge is power*

[Paul Marossy]

[Foona]

Thank you for all the answers.

I found some inductors at both "smallbear" and "tubes".
This one: P-ECB-156

I know the schematic call for an 660mH inductor, but this one should do the job right?

This is the only part missing to complete the PCB, looks like im going to have to wait for it though.
Usually takes about 2-3 weeks to get an order delieverd Sweden.
It will give me time to fiddle around with the case design....yes...
That is the real pain
_________________
*Knowledge is power*

[Paul Marossy]

The wah schematic (and patent docs) show a 500mH inductor. The current manufacture ones measure around 600-650mH. That should actually make it sound a tiny bit fatter.
_________________
Paul Marossy
www.DIYguitarist.com

[Foona]

Ok, that settles it, i'll order right away.
You have been most helpfull, thank you.
_________________
*Knowledge is power*

[Paul Marossy]

Glad to be of help.
_________________
Paul Marossy
www.DIYguitarist.com

[Foona]

In this project: Building a Wah Pedal From Scratch

Is there any chance you could provide me with pitures of that project in higher resolution?
Im quite amazed by what you did there, I am not shure if I have the skills to do domething like that.

Im curious, have you ever built any other wah pedal after this one?
At the bottom of that page you say that you would probably do it differently the next time, so this is why im asking.
_________________
*Knowledge is power*

[Paul Marossy]

[Foona]