Wiardgroup

true...It was the frigid Milwaukee winters that forced the evolution
of the wogglebug circuit. The #1 prototype required a troublesome
mixture of gasoline, fuel oil, peppermint extract, and pulverized
CA3080's. During Milwaukee's arctic season, flakes of parafin tended
to form in the fuel oil and this badly clogged the data inputs to U1 &
U2 if you left the wogglebug parked outside or in an unheated garage
overnight. All of these issues were remedied in version# 2  when prof.
Richter switched to a geothermal design.

(is it april already?)(!)
-doc

 


--- In wiardgroup@yahoogroups.com, Justin Modra <nitrohepcat@y...> wrote:
> The #1 wogglebug involved a modified 2-stroke
> snowmobile engine - very noisy.
> 
> --- "Fahl, Romeo" <rfahl@e...> wrote:
> 
> > 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@y...] 
> > > 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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> > >
> >
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> > > 
> > > 
> > > 
> > 
> 
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