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How fast were you spinning the pump to get the signal in the scope? 240rpm? Depending on the sensor it wasn't fast enough to get a voltage difference.
Have you thought of using an IC to handle the sensor to uC? There's a few out there depending on the sensor involved that are cheaper than individual components.
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brandon'); DROP TABLE Users;--1948 Dodge 1.5t 12v RH swap | 99 F250 12v RE test rkt | 11 X5 'no soup' | 08 F250 CR RE swap | 05 2500 CR 68 standalone
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