I have no electronic design knowledge, so plz forgive my ignorance.
I want to offset a signal voltage coming from a car sensor being sent to
the car's ECU. The sensor in question is the O2 sensor.
The ECU sends a +5v reference to the sensor. The sensor then returns
a +.2v to +4v signal back. It's usually about +1.5v and jumps back and forth
around this value.
I want to offset this signal +1.5v. If the O2 reads 1.45v, I want the ECU to see 2.95v.
I search and found this circuit:
https://www.electro-tech-online.com/attachments/adder1-gif.440/
And tried recreating it on my "300 in One Electronic Project Lab" breadboard.
But I can't get it to read the expected voltage with a multimeter.
I'll post a wiring diagram in a minute to show what I have.
Thanks,
Rey
I want to offset a signal voltage coming from a car sensor being sent to
the car's ECU. The sensor in question is the O2 sensor.
The ECU sends a +5v reference to the sensor. The sensor then returns
a +.2v to +4v signal back. It's usually about +1.5v and jumps back and forth
around this value.
I want to offset this signal +1.5v. If the O2 reads 1.45v, I want the ECU to see 2.95v.
I search and found this circuit:
https://www.electro-tech-online.com/attachments/adder1-gif.440/
And tried recreating it on my "300 in One Electronic Project Lab" breadboard.
But I can't get it to read the expected voltage with a multimeter.
I'll post a wiring diagram in a minute to show what I have.
Thanks,
Rey