freestompboxes.org

Hi folks,

do anyone here have some information about this pedal?
I tried to google it and I found this gut picture.

it seams not to be an uber-complicated circuit!

thanks for the help

Ok so i got hold of one of these beasts and took several guts photos.












































I didn't want to take the pots apart, pedals not mine and the owner didn't want any piece of detailed info of it to be public (hence the blemished date and so...)
Sorry for the crapy photos, but that's all I could shoot at the time.

Hope it helps!

Cheers!

possibly a Guv'Nor. (just my guess)

Forgot to mention: Leds are clear red.

Ah, one other thig. I still have the pedal with me for a week or so. If you need me to check anything just ask and Ill do my best.

Cheers!

Do you have a list of the components? Here is what i have so far as a guess.

I'll try to get some values and post them here.

Second guess at values from pictures???

Just got hold of the pedal. Everything is almost right darmstat, just a couple corrections!

Check it:



My only doubt is that diode, but I guess it's just for polarity protection...?!

Cheers!

Great zednotdead. Would you happen to have some pictures of the other side of the pcb board?

Pictures from my first post are front and back.
I know it's hard to see the tracks, mainly no the backside, but those were the best I could take.... sorry.

This is what i have so far with the pictures available.

with 4.6 k resistor

Thanks for this! I think the presence control should probably be connected to the inverting input of IC1 instead of the output, and the three tone controls should have their wipers connected to the inverting input of IC2.

Just talked to the owner of the pedal, he said I could keep it for a couple of days more
So, I don't want to take it apart, but I'll try to verify the connections with a multimeter. If it beeps it's ok If not... i'll figure it out and correct the schematics (thank you so much darmstat!!!! )

So Something like this Nocentelli?

OOPS... I uploaded the wrong one. Here is may updated version.

Yep. And you would normally expect the resistor hanging off the IC1 non-inverting input to be connected to vref rather than ground, and to be smaller in value. I wonder if the 3M3 and cap to ground pair are actually connected to the "guitar side" of the input cap, and there is a different bias resistor somewhere (usually 1M or 470k in this type of circuit) connecting the opamp input to vref? I say all this from the perspective of not having spent hours studying the trace itself, so it is just speculation.

This my best guess with the pictures and i think i am missing just 2 resistor( 2 x 10k ) which could be somekind of voltages dividers. I am not sure. Please feel free to correct or toss in an oven....lol

diode is just a protection diode.