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DIYstompboxes.com  |  DIY Stompboxes  |  Building your own stompbox  |  My new circuit - "1983 Fuzz" Old School Atari type fuzz 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: My new circuit - "1983 Fuzz" Old School Atari type fuzz  (Read 16128 times)
Ultrakd
Posts: 132

Chris R.


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Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #20 on: April 13, 2012, 07:06:59 PM »

What do the pots do? I know one is Volume, what do the other 2 do?
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Guitars: Ibanez S570DXQM
Amps:  Peavey ValveKing 112, Roland 15XL
Pedals: Big Muff w/ Tone & Wicker, Original Crybaby w/Modifications, BYOC Overdrive 2, Danelectro Cool Cat Chorus, Boss PH-3, Wave Breaker Tremolo,
timd
Posts: 582



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Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #21 on: April 13, 2012, 07:12:59 PM »

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.
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timd
Posts: 582



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Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #22 on: April 17, 2012, 04:43:08 PM »

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

http://youtu.be/gBBBn1rE17s
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petey twofinger
Posts: 987



Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #23 on: April 17, 2012, 09:52:48 PM »

excellent , thanks for the video .

i commented .

i will sub too , hold on .

subbed .
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im learning , we'll thats what i keep telling myself
timd
Posts: 582



WWW
Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #24 on: April 17, 2012, 10:14:21 PM »

Thanks Petey! Hey, I checked out your Youtube again - nice stuff - subscribed!
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petey twofinger
Posts: 987



Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #25 on: April 18, 2012, 11:58:16 AM »

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 .
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im learning , we'll thats what i keep telling myself
timd
Posts: 582



WWW
Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #26 on: April 18, 2012, 02:00:34 PM »

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.
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timd
Posts: 582



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Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #27 on: April 22, 2012, 01:14:34 AM »

Has anyone else tried this build? I'd love to hear feedback and/or suggestions...
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Vince_b
Posts: 235



Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #28 on: April 22, 2012, 06:20:33 AM »

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!
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~arph
Posts: 1457


Arnoud P. - The Netherlands


Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #29 on: April 22, 2012, 08:26:06 AM »

I'm not getting the schematic  Huh
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?
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timd
Posts: 582



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Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #30 on: April 23, 2012, 07:39:16 AM »

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.
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Vince_b
Posts: 235



Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #31 on: May 08, 2012, 04:18:34 PM »

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?
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timd
Posts: 582



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Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #32 on: May 08, 2012, 08:47:49 PM »

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?
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deadastronaut
Posts: 9969


Rob H. LONDON


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Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #33 on: May 09, 2012, 02:33:46 AM »

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

btw subbed Wink
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http://www.youtube.com/user/100roberthenry
http://deadastronaut.wix.com/index

^ CHASM REVERB + TREMSHIFTER Pcb's + WAH LIGHT PLATES.
kodiakklub
Posts: 240

Karl S. - Local One


Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #34 on: May 09, 2012, 07:31:27 AM »

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
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deadastronaut
Posts: 9969


Rob H. LONDON


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Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #35 on: May 09, 2012, 07:52:45 AM »

yep electro...  either way..   breadboard it first!!!... Wink
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http://www.youtube.com/user/100roberthenry
http://deadastronaut.wix.com/index

^ CHASM REVERB + TREMSHIFTER Pcb's + WAH LIGHT PLATES.
kodiakklub
Posts: 240

Karl S. - Local One


Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #36 on: May 09, 2012, 08:02:05 AM »

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?

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Vince_b
Posts: 235



Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #37 on: May 09, 2012, 08:12:29 PM »

I tried it again today (with the 10uF across pin 1-8) and I still counldn't get it to work  Sad. 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?
« Last Edit: May 09, 2012, 08:14:07 PM by Vince_b » Logged
timd
Posts: 582



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Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #38 on: May 10, 2012, 04:56:25 PM »

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? 
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timd
Posts: 582



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Re: My new circuit - "1983 Fuzz" Old School Atari type fuzz
« Reply #39 on: May 10, 2012, 08:10:33 PM »

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.
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