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Resistive Fuel Sending Unit into MC43?

David Holcomb 7 years ago in Master modules / MC4x • updated by Chris Litwin 7 years ago • 1

Quick question on fuel senders.


The kind we have included with our fuel tank is in fact not a current out, but resistive fuel sender. That is, 1 terminal is connected to ground and 1 terminal is the signal wire with varying resistance based on fuel level.

Is there any way that the MC43 can read this?

+1
Chris Litwin 7 years ago

We set ours up like the circuit below. I believe the Vin will have to be scaled according to R1 value you use.

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