Return of the diy_EGOmeter (YES, it's finally ALIVE!!)

[Steven Gorkowski]

Don't lock and throw away the key on standard heated  O2's . I still
maintain that a heated O2 can be built to give fairly good results and
remember they are cheap and can be found every where.  Glad you got that
O2 going looking forward to build the new meter in time .

Steve

garfield at pilgrimhouse.com wrote:

> On Thu, 16 Apr 1998 07:45:27 +-1000, "A.HOLLEY" <holley at zeta.org.au>
> wrote:
>
> >Dont know how to tell you people this , but there is a kit available
> from one of the local electronics chains here in Aus of a very similar
> device.
> >Comes with PCB and all components except case and EGO sensor.
> >Fitted one in my XJS Jag about a yr ago.
> >Works like a charm. And all for $15 Aus.
>
> Golly, is there a lotto in Oz? Cuz if you got one of them circuits,
> which is dollars-to-donuts a O2 sensor voltage to LED/whatever meter
> circuit, to "work like a charm" for ya, you need to go down to the
> lotto
> office RIGHT NOW, and get some tickets!
>
> That company, BTW, (does the name Dick Smith ring a bell?), if it's
> the
> major one I'm thinking of, is a major boon to you aussies; electronics
>
> experimentation and kit building like they support has long since died
>
> in the US. I was overjoyed to get my first catalog from them (yes,
> they
> will take phone orders...I've done it, so it's no speculation...long
> distance from the US and NOT waste your time on the phone), they
> handle
> the monetary exchange just fine, and will put you on their
> catalog/flyer
> mailing list, all the way from OZ !! I kid you not. They even have
> serious, state-of-the-art radio receivers in kit form, you'd not find
> ANYWHERE in the US.
>
> But as far as an "equivalent" O2 meter for real, "well Virginia", as
> we
> say in the states, "...". It's not their fault. It was the best
> ANYBODY
> could do, reading the O2 sensor voltage directly from a conventional
> lambda sensor element, and trying to do something reasonable with it.
> Every aftermarket company like MSD followed suit, but THEY charged you
>
> $200 for something you could have built for $15 in parts, had you
> known
> what was in it.
>
> Well, now the neat thang is you CAN build one like a kit, only costing
> a
> few bucks more (course the O2 sensor's still a tad pricey, heh), and
> can
> REALLY use it as a measurement device. This isn't due to clever
> circuitry/wizardry, so much as it's due to this new technology of
> current-pump-mode 5-wire sensors.
>
> As a talisman on the viability of this $15 wonder from the land of Oz,
>
> just riddle me this; is the sensor it uses, 1-wire, 2-wire, 4-wire, or
>
> 5-wire. If it's anything but the last, and only costs $15 to build,
> it's
> a myth the likes of Sisyphus.
>
> Garfield the Septic Skeptic (refering to my vile viral guests, of
> course)
>
> P.S. Have you ever had your smog check station check the AFR numbers
> you
> read on your Jag's O2 meter? Not getting on yer case, AH, just
> wondering
> what your level of experience with these thangs is. Call me snoopy.