I'm looking for suggestions. I have a 0-5v sensor on my car. Most of the time, this signal is fine and I just want to pass the signal through without disruption. I'd like to use the arduino to monitor other conditions on the car and occasionally substitute my own analogWrite signal for the original sensor signal. I'm looking for a chip/approach that let's me switch between the original signal and the one I generate with analogWrite.
I've rather keep the original signal in place and not go through an adc-dac round trip in order to occasionally modify it, so hoping someone can point me in the right direction for a fast digital throw switch. Thanks!