Voltage to RPM Converter

WSJ · Feb 17, 2011

Any constructive remarks about the following idea would be appreciated.

I wanted to add a voltage gauge and a tachometer to my H using one gauge mounting hole. A multifunction circuit could be designed to display several engine functions using a single tachometer as the display device. Any 12 Volt digital or analog tachometer may be used to display RPM or Voltage in a 6 or 12 volt system. Additional functions can be added such as; oil pressure, oil temperature, air temperature, speed or charging current. A function selector switch could be mounted in any location.

Thanks,
Wayne

http://public.fotki.com/WAYNEWANG/

The outer bar graph gives this tachometer an added visual indication of the measurement.

Janicholson · Feb 18, 2011

Very good idea. Simplifiesthe whole concept. It takes the monitoring issue to the 21st century. Not stock, but great. For shows a thin cutout picture of an amp gauge could be adhered to the face of the gauge! Jim

WSJ · Feb 18, 2011

(quoted from post at 13:10:34 02/18/11) Very good idea. Simplifiesthe whole concept. It takes the monitoring issue to the 21st century. Not stock, but great. For shows a thin cutout picture of an amp gauge could be adhered to the face of the gauge! Jim

The cutout overlay is a great idea.

Thank you,
Wayne

Janicholson · Feb 18, 2011

If you are into electronics, I see the controller sensor AD converters for the readout placed in a "black box" under the hood where the starting tank would normally be located. A tiny push button on the bottom of the existing meter panel would send a signal to the "box" indexing a solenoid operated rotary switch, or more logic, to change functions.
All very discrete. Jim

WSJ · Feb 18, 2011

(quoted from post at 20:10:44 02/18/11) If you are into electronics, I see the controller sensor AD converters for the readout placed in a "black box" under the hood where the starting tank would normally be located. A tiny push button on the bottom of the existing meter panel would send a signal to the "box" indexing a solenoid operated rotary switch, or more logic, to change functions.
All very discrete. Jim

A push-wheel switch provides both up and down buttons to change functions with switch contacts and a display of 0-10.

Janicholson · Feb 18, 2011

Very nice switch, just harder to hide or disguise.
Fun topic. Jim

Voltage to RPM Converter

WSJ

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WSJ

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