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Any Schematics for a LCD Air Fuel Ratio Meter out there?

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J

Thread Starter

Josh Young

Joined Jan 16, 2009
6
Wanted to see if there were any LCD based AFR meters out there. I have seen the LED based AFR meters out there, and wanted something with a little more pizazz. A programmable unit would be nice, so I can set a given input voltage to read a corresponding ARF Ratio. Thanks in advance for the help,


Josh
 
Externet

Externet

Joined Nov 29, 2005
2,638
Pizzawhat ?
Any LCD digital voltmeter can tell you ~450mV for good 14.7:1 ratio, less for lean and more for rich when connected to an oxygen sensor.
 
J

Thread Starter

Josh Young

Joined Jan 16, 2009
6
Externet,

Thanks for the reply. I had read about the .450 VDC being 14.7:1, but wanted a circuit to give a nice Air Fuel Ratio readout instead of converting voltage to AFR. I may just have to go the DVM route with it, and make a little voltage / AFR conversion chart.
 
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