The pressure transducer ground needs to be connected to Arduino ground. The huge picture is a pain.
QuoteThe pressure transducer ground needs to be connected to Arduino ground. The huge picture is a pain.There should be a smaller picture there now. When I connect the transducer to the arduino ground instead of the voltage regulator ground/battery, No voltage goes to the transducer.
Why not omit both the capacitor and OP amp output resistor and see if that helps - after joining all the grounds.
Have you confirmed the transducer is getting a suitable drive voltage and is outputting a signal.
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