U N F I N I S H E D projects



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Re: U N F I N I S H E D projects

Postby BetterOffShred » Sat Apr 07, 2018 11:49 am

You may better luck at Freestomboxes.org - there's a thread there on debugging the original glass hero schematic and a couple guys get working ones.

I have interest because I haven't built mine yet ;) plus I love debugging. Did you get the right transistors? I know others had difficulties with the MPSA05.. g? Don't have the schematic in front of me..

Someone will have voltages off a working filter chip. Stay positive. :)
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Re: U N F I N I S H E D projects

Postby Mellissengeist » Sat Apr 07, 2018 12:11 pm

Thanks Dude, i'll get it working somehow. I give FSB a try.
Well I got the right Transistors but Triton 13 suggested to use BC549c and they somehow sound better!
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Re: U N F I N I S H E D projects

Postby BetterOffShred » Sat Apr 07, 2018 12:19 pm

I see. Well I'll write that down.. ;) thanks for sharing
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Re: U N F I N I S H E D projects

Postby LaoWiz » Sun Apr 08, 2018 8:16 pm

Mellissengeist wrote:Image

This is my take on the Evil Filter, I etched the graphics. built it as selfetched pcb (didnt work) built it as vero (only fuzz was working )changed the transistors to the better sounding BC549c. I am pretty stuck in this but really looking for a nice solution for that problem. could also be that i burned the expensive IC with my first try?!
If you have an idea or know where to get a nice and clean PCB give me a hint!


That looks rad! I think I etched one of those boards from perf and pcb layouts but never ended up buying the IC and the labeling of all of the wires looked too confusing so haven't thought of it since.
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Re: U N F I N I S H E D projects

Postby LaoWiz » Mon Apr 09, 2018 2:42 pm

While I didn't finish anything this weekend I did some etching, drilling, and painting. Corruptor is Freppo's Ring Mod and the Error Machines are Foxx Tone Machines, one for me and one for a buddy... :!!!:

Image
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Re: U N F I N I S H E D projects

Postby Chankgeez » Mon Apr 09, 2018 2:45 pm

:love:
"You can't copyright circuits really." - Ed Sanner …………….0.............
"The effects market was really nothing more than a bunch of beggars and theives, all building off one another's work." - Dan Armstrong…...........................…
Sweet dealin's: here
"...a benevolent dictatorship can be O.K. for as long as the benevolence lasts…” - Hardy Green
"Flangers gonna Flange, though. There's no way around that." - Joel Korte
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Re: U N F I N I S H E D projects

Postby BetterOffShred » Mon Apr 09, 2018 2:56 pm

:drool: :love: :drool:

God damn man.
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Re: U N F I N I S H E D projects

Postby Jero » Mon Apr 09, 2018 3:04 pm

Those are stunning!

Is Freppo the same as Parasit? If so, I have one of those Corrupter boards I need to finish. That circuit sounds so gnarly.
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Re: U N F I N I S H E D projects

Postby BetterOffShred » Mon Apr 09, 2018 3:19 pm

Yes.
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Re: U N F I N I S H E D projects

Postby LaoWiz » Mon Apr 09, 2018 4:56 pm

Thanks you guys!

Jero wrote:Those are stunning!

Is Freppo the same as Parasit? If so, I have one of those Corrupter boards I need to finish. That circuit sounds so gnarly.


Yep, Freppo is the chap behind Parasit. It's a completely rad circuit especially considering the super low parts count. Only took me 5 times to get a working board, though!
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Re: U N F I N I S H E D projects

Postby Jwar » Tue Apr 10, 2018 9:38 am

So, as far as unfinished shit goes, I have a quick question.

Can you wire two circuits into the same expression jack? Is that feasible or would each circuit require it's own in order to work correctly? I'm asking because I have a dual Bitquest and Dual Elements. Both can have two, but no room. This is one of my many ventures I just never attempted. lol
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Re: U N F I N I S H E D projects

Postby crochambeau » Tue Apr 10, 2018 9:52 am

Jesus Was a Robot wrote:So, as far as unfinished shit goes, I have a quick question.

Can you wire two circuits into the same expression jack? Is that feasible or would each circuit require it's own in order to work correctly? I'm asking because I have a dual Bitquest and Dual Elements. Both can have two, but no room. This is one of my many ventures I just never attempted. lol


Don't those want a CV? (Which is to say, isn't the expression aspect a voltage divider working off of a supplied voltage reference). Yes, you can utilize a single jack for that, but you do not want to connect the different circuit points together, so a pair of unity gain DC coupled buffer amplifiers need to act as gatekeeper between the the outside world and the pair of circuits (or all four, if you're a madman).

One buffer is needed for each circuit input. If a reference voltage is provided insure they measure the same voltage, if so disconnect one of them so only a single voltage reference is provided to the pot.
D.o.S. wrote:This thing is like the Blue Box on the amount of acid that lands you in the ER pretending to play it straight while you try and ignore the fact that the walls are dripping oil.


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Re: U N F I N I S H E D projects

Postby Jwar » Tue Apr 10, 2018 9:55 am

crochambeau wrote:
Jesus Was a Robot wrote:So, as far as unfinished shit goes, I have a quick question.

Can you wire two circuits into the same expression jack? Is that feasible or would each circuit require it's own in order to work correctly? I'm asking because I have a dual Bitquest and Dual Elements. Both can have two, but no room. This is one of my many ventures I just never attempted. lol


Don't those want a CV? (Which is to say, isn't the expression aspect a voltage divider working off of a supplied voltage reference). Yes, you can utilize a single jack for that, but you do not want to connect the different circuit points together, so a pair of unity gain DC coupled buffer amplifiers need to act as gatekeeper between the the outside world and the pair of circuits (or all four, if you're a madman).

One buffer is needed for each circuit input. If a reference voltage is provided insure they measure the same voltage, if so disconnect one of them so only a single voltage reference is provided to the pot.


They are straight expression as far as I know. I could be wrong though. Maybe I ought to email Ryan and ask.
"I do not have the ability to think rationally 90% of the time and I also change my mind at the drop of a hat".

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Re: U N F I N I S H E D projects

Postby crochambeau » Tue Apr 10, 2018 10:39 am

If they are passive network expression then no, you cannot connect them together without borrowing a lot of crosstalk (this is typically crippling, but once in a while an outlier crops up).

If they are connecting directly to the FV-1 IC then pot inputs divide a 3.3 volt ref and can be linked up as I described earlier (so long as only one 3.3v reference is tapped).
D.o.S. wrote:This thing is like the Blue Box on the amount of acid that lands you in the ER pretending to play it straight while you try and ignore the fact that the walls are dripping oil.


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Re: U N F I N I S H E D projects

Postby Jero » Tue Apr 10, 2018 11:56 am

LaoWiz wrote:Thanks you guys!

Jero wrote:Those are stunning!

Is Freppo the same as Parasit? If so, I have one of those Corrupter boards I need to finish. That circuit sounds so gnarly.


Yep, Freppo is the chap behind Parasit. It's a completely rad circuit especially considering the super low parts count. Only took me 5 times to get a working board, though!

Ok, thought so! Yea, I have a handful of boards from him that I nvr got around to finishing (this is an unfinished project thread after all, lol). Looks like there are new versions of just about all of them now.
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