My new circuit - "1983 Fuzz" Old School Atari type fuzz

[Ultrakd]

What do the pots do? I know one is Volume, what do the other 2 do?

[timd]

They each shape the sound. When I make the video, I'll demonstrate that. From left to right, each pot seems to go from bass to treble. The change is not extreme, but its a nice touch.

[timd]

Here's the video...Sorry in advance if you like red led's.

http://youtu.be/gBBBn1rE17s

[petey twofinger]

excellent , thanks for the video .

i commented .

i will sub too , hold on .

subbed .

[timd]

Thanks Petey! Hey, I checked out your Youtube again - nice stuff - subscribed!

[petey twofinger]

yeah i have to catch up on my video "production" ...

its really time consuming , but ... i really dig the idea of archiving this stuff i do .

thanks for the sub , i am looking forward to seeing more of YOUR work !

keep those oddball chassis comin  , the idea of reusing stuff like that , it really stands out , that's class man .

i used to do a lot of garbage pickin before i got hurt , i really miss those nights .

[timd]

Thanks for the kind words! That box for the 1983 fuzz was a black power supply I gutted and sprayed light blue - It really turned out better looking than I though when it was all assembled... I'm super new to the whole building scene, but I'm constantly working on a breadboard with whacked out stuff like a mad scientist. I'll post what I come up with if its anything good.

[timd]

Has anyone else tried this build? I'd love to hear feedback and/or suggestions...

[Vince_b]

I'm going to try it but I don't have a 556 on hands and it might takes two weeks to get the one that I have ordered.
I really like the soundclip!

[~arph]

I'm not getting the schematic 
I looks like you only using one of the timers in the 556.. then why is there a pot connected to the A discharge?  you're not using A's output at all..
Can't you just use a 555 instead?

Could you please elaborate?

[timd]

I'll have to do some breadboard work to see if one could get by with only a 555. The reason I used a 556 is because I'm using both threshold pins in the design (2 and 12) and didn't know if I could modify it. It might be more streamlined to use a 555 instead of the 556 and possibly remove a pot. The pot coming off discharge A? I have no electronical rational there - I was just screwing around with components on a breadboard.

[Vince_b]

I have breadboarded this circuit with no success today. The only thing that I have achieved is an acrid smell coming out of the 556. Are you sure that there is no mistakes in the schematic that you have drawn?

[timd]

I'm pretty sure there are no mistakes.  I drew the schematic from my breadboard, then used that schematic to build my final version. I'll take a look if I have some time. Anyone else build this?

[deadastronaut]

suggestion: put a 10uf on 386 pin 1-8...

btw subbed

[kodiakklub]

DA: an electrolytic i assume? which way would + go or does it matter? making a proper schem in eagle right now for this and will post it

[deadastronaut]

yep electro...  either way..   breadboard it first!!!...

[kodiakklub]

i actually found it moments ago on another non-pedal related site. its the first google image result when searching "ic386"
timd: is this correct?

[Vince_b]

I tried it again today (with the 10uF across pin 1-8) and I still counldn't get it to work  . There is no sound at all and as soon as I power it up the 556 is getting burning hot. It looks like such a simple circuit, I really don't get what I am doing wrong.
Have you breadboarded it kodiakklub?

[timd]

Kodiakklub - can you give me the link to this? I tried to type in the same google image search, but couldn't find it - must be a regional thing. Well, its not my circuit...but so close....Was I at least given credit in some way?

Vince - do you have a different 556 ic you can try? 

[timd]

Upon further review, minus the 10 uf cap, it looks like someone jacked my circuit. It's really easy to tell because I used some component sizes that might not be ideal and I was going to change. Distressing.