Wah out of a Volume pedal project

[koz]

Hi everyone!
First of all, this is my first time trying to built something from the ground up
and i hope the somebody can help me on this.

I don't know if call this a Mod or a build,
because i got this Vox Volume Pedal and i was thinking to make a wha pedal out of it,



Here's The Schematic i will try to follow

http://www.geofex.com/Article_Folders/wahpedl/wahped.htm

or if somebody can recommend to me another one simpler it will be helpful
This is what i got so far:

Resistors:
                1k
               10k
               15k
               22k
               33k
               82k
              100k
              470k (x3)


Capacitor:
              0.01uf (electrolytic capacitor)
              0.01
              0.22 (x2)


Transistor:
              NPN (x2)

Inductor:
             500mh

? This one i don't know what is it.
any other thing the i miss, just tell me.

[remmelt]

The symbol is a capacitor. This one is a 4.7 micro-Farad. The u is really a micro which looks the same but has a longer second leg. Regular capacitors have two straight lines, this one has a straight one and a half circle: it has a plus and a minus side. Usually this means that it's an electrolytic capacitor, the kind that looks like a can with two legs sticking out one side (there are caps like that with a leg on each side too.) Take care which way the minus side goes! The plus always goes where the voltage is highest.

There are a lot of wha's on the page you linked to, which one will you build? Check if your pot has the right value: the one that moves when the pedal moves.

[Paul Marossy]

Well, you have the hard part of building a wah pedal - the shell! The rest is easy in comparison... 

You can get a red or yellow Fasel inductor from one of several sources. The transistors can be one of several NPN transistors. I personally like BC109s, but MPSA18s work well, too. (as well as many others)