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The paddle wheel delivers has just 2 wires; I am picking up the signal from just one wire and which is all the new display requires.
Is this a well travelled path - can I buy the built circuit I need or do I need to build - I am pretty ignorant when it comes to this.
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Thought this might be an interesting first project, but my knowledge is very basic.
A 12v old (1988) boat speed indicator with its paddle wheel sensor. I have a new display which can read the old paddle wheel but interprets the speed at close to twice the proper value. Calibration on the new...
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