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Topic: AD595AQ for Car Exhaust Gas Temperature (Read 3 times) previous topic - next topic

matinzk

I have substituted them with one another the same thing.

Arduino uses the same L7809CV chip as the AD595AQ, and the L7809CV is connected to the chassis.

EmilyJane

By the "same thing" do you mean they both read wrong now or that just the one on the car reads wrong. What happens when you touch the "home" one to the car.

matinzk


EmilyJane

Oh, okay. Something happened to your circuit in transit apparently. You need to thoroughly check it for loose, broken wires, short circuits, etc. Anything that is different from when it last worked correctly.

matinzk

It works fine when I don't connect it to the car, so the probe that's on the car, when removed and pin 1 connected to pin 4 it works fine!

So the chip is fine, isn't it?

Is it better to go and get an ungrounded probe then? And leave the circuit with pin 1 connected to pin 4?

Thanks.

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