Re: LED Fuel Mixture Meters

["Gary G. Erickson" <erickson@teleport.com>]

Orin Eman wrote:
> 
> > Can these LED fuel mixture meters I keep seeing in European Car magazine
> > such as the "Dynograph" by Perfomance Instrumentation be used to read
> > CIS F.I. CO percent also?  Looks like they hook into the OXY sensor.  Or
> > is there no substitute for a good CO meter and probe?
> 
> They just read the O2 sensor voltage.  I haven't tried one, but I have
> built my own using an LM3914, 10 LEDs, a Radio Shack box and a couple
> of other components.  $20 or so.

FWIW, the DIY_EFI mailing list has a web page with some projects listed
at:

http://efi332.eng.ohio-state.edu/diy_efi/projects/projects.html

and there are two varieties of OXS meter that use the LM3914.

HTH!

Gary

P.S. Orin, you're on the DIY_EFI list aren't you?

-- 
Gary G. Erickson         Member #82 NW Quattro Club
503-702-5789                  erickson@teleport.com
   http://www.teleport.com/~erickson/pnwaudi.htm