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Here is something that may be of interest to some of you.
Ken and I have exchanged notes on our interest in electronic fuel monitoring
gadgets for the aircraft rotary. Here is his interesting employment of the
LOG version of the LED indictor, to give a more linear response curve of the
O2 sensor. As Ken indicated you are free to use this to build your own or
contact him for a printed circuit board (don't know the cost, but probably
well worth it).
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message ----- From: "Ken Kelly" <ken7382@hotmail.com>
To: <eanderson@carolina.rr.com>
Sent: Wednesday, April 28, 2004 11:03 AM
Subject: Re: Air Fuel Mixture Display
Hey Ed, here's our final schematic that we came up with.. along with the
bill of materials, and the AF response compared to the O2 sensor output.
Feel free to distribute them - we are not selling them, but will sell
pre-made PC boards for anyone who is interested in making one. Bill said
he's had his running on his '84 Corvette and it runs GREAT!
I also have a real nifty AFR meter from Australia that even has a triple
7-segment that displays supposed AFR's on it, along with a small bargraph.
It's PIC based, but pretty neat. I picked it up for $60 delivered to the
US.
But, it's DIY also, and the source code for the PIC is freeware. I haven't
had a chance to build it yet, so I don't know if it works well or not.
Ken
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