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Some Timmys

Started by strat68, July 30, 2014, 04:34:06 PM

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strat68

I was asked to post some build info based on my post over on the Buy/Sell/Trade forum.  So I'll gladly show what I've done for the Timmys.  I've been building effects off and on since the 1970's after I got a copy of Criag Anderton's "Electronic Projects for Musicians".


This was version used the pcbs I had made.  This one was to verify the board.   As you can see it's wired pots.  I usually hate wired pots but braiding the wires helped tame the mess.

I used a DPDT switch because I had no DIP switches at the time.   The footswitch is on a GuitarPCB board.  Used 24 gauge wire throughout and I buy parts mainly from Tayda.  It's in an unpainted 125B enclosure which I use exclusively since it's pretty cheap from Tayda and a bit larger than 1590B. 

I used a 1458 IC after testing 4558 and 072.  It seemed to have the most gain and least noise.  Since I'm not an expert on the details of these 3 chips and assumed there would be little difference, I was surprised that the 4558 had the least gain of the 3. I tried the 1458 after seeing several recommendations on other boards.

Overall it was a pretty simple build which, overall, took about an hour to put together and test and put into the box. 
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The version below was made from a PCB I received on the down-low from another online PCB seller.  It has board-mounted pots which I prefer.  I didn't post the insides as it's pretty messy compared to the above, even with the wired pots.  As you can see I painted this one and added decals.



The 2 versions do not sound identical but close enough even though, I think, they are part for part the same.  I'd have to go back and check.  There are not too many variations on this circuit from what I've seen on various forums. 

GrindCustoms

Welcome on board, the first one you posted with «Sharpied» name is a Palsy Drive, a shared OSHPark project that was released couple years ago.

Be aware that selling Timmy clone pcb is a «whiny dangerous game» and i REALLY know what i'm talking about. ;)

Take care.

Rej
Killing Unicorns, day after day...

Building a better world brick by brick:https://rebrickable.com/users/GrindingBricks/mocs/

culturejam

Good eye, Rej. That is the exact Palsy Drive layout with a different name on it.
Partner and Product Developer at Function f(x).
My Personal Site with Effects Projects

Bufferz

affiliations: TFX

midwayfair

Your name seems to indicate that you are a company, or at least would like to present yourself as one. This forum has a rule about disclosing affiliations in your signature.

flanagan0718

hmmm...suspect. Video demo, website, build docs?

GrindCustoms

Quote from: flanagan0718 on July 31, 2014, 02:55:36 PM
hmmm...suspect. Video demo, website, build docs?

Don't mean to be the basher... but the Palsy Drive was an open source project available to everyone, the person who posted it back then... supplied all of the files for the project. The silkscreen have simply been changed and pcb «commercialised».

It was also a bit of the intention of the person who made that project available.

So i'd say.......... Mission Accomplished! lol
Killing Unicorns, day after day...

Building a better world brick by brick:https://rebrickable.com/users/GrindingBricks/mocs/

strat68

I looked at all the projects on OSH and never found this one.  I found it after about a month or two of looking.  I completely understand  the controversy making Timmys but not necessaruly agree with it.  I tend to think a few people protest too much.  The boards can be found on the sly and for sale several places and several people have sold them here assuming the search function is accurate.  I would think anyone that goes to the trouble of building one will probably want to buy one just to compare the real thing.  I know I will eventually. 

By the way, the svsystems is just a mnemonic I use.  I write spacecraft software for a living. 

Anyway, I don't want to stir up an argument but just posted some observations on what I observed after getting back into this hobby after a long time off.