Wiardgroup

Having built a couple, I can say that if you're patient enough to roll
your own, the #3 Wogglebug is definitely worth the effort. 

R. 

> -----Original Message-----
> From: drmabuce [mailto:drmabuce@yahoo.com] 
> Sent: Monday, December 13, 2004 8:37 PM
> To: wiardgroup@yahoogroups.com
> Subject: [wiardgroup] Re: this is for grant i guess
> 
> 
> 
> Hi Dustin
>       I've never disassembled my production wogglebugs for a 
> component by component comparison  but I was in close contact 
> with Grant during the development of the circuit in the 
> summer of 2001.  To my knowledge, there were six prototypes. 
> #5 was the production model ***.  I've built several #3's  
> and modified them to my taste.
> Schematics of my favorite mods  are in the files section of this group
> labelled: WBug3Mods-DrMabuce.jpg.
>      To address your question more directly. The core of the 
> wogglebug is the 4046-pair , the 398 sample-hold and the 
> vactrol.VC1 -  the evolution of the woggle bug circuit after 
> #3 tended to be progressive refinements of  the voltage 
> controlled clock (U5 & VC2)  that triggered the 398 and the 
> circuit that controlled the LED portion of the vactrol, VC1.
>      In the #3 circuit VC1 and a second vactro.l, VC2 are 
> controlled, together, in series by a single CV. To my 
> (deranged) ear , the option of controlling VC1 and the 
> clock-rate VC2 separately yields a lot more interest . 
>      Also I imagine that Grant would have been inclined to 
> improve the transistor-based circuit (Q1) that controlled 
> VC1--- probably with a op-amp CV buffer.
> 
> I realize this response id far from definitive, but on the 
> whole I believe that Grant published the essence of the 
> wogglebug  in the #3 schematic - an almost insanely generous act IMHO.
> 
> melt some solder and try it!
> -doc
> 
> ***
> the #6 schematic included an ill-fated implementation of the 
> MF-10 one-chip programmable filter that was too outrageously 
> noisy for a commercial design - I added one to my production 
> board just to find out!
> `a bridge too far!'
> 
> 
> 
> --- In wiardgroup@yahoogroups.com, "ed.j.wise" <dustin.sedlacek@g...>
> wrote:
> > 
> > or anyone else that knows how is the wogglebug#3 schematic 
> that i have 
> > found  diffrent from the production model wogglebug that is sold on 
> > the web site?
> 
> 
> 
> 
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