I have an RPi 4 running VenusOS and a 20gal water tank. Fairly new to RPi/GPIO etc., but I'm looking for the simplest plug n' play way to measure water level.
It seems the easiest and most reliable measure is a water pressure sensor. Has anyone found a USB version of this that just... works? All I'm seeing take 5v and output 0-5v, which I understand won't work with the 3.3v pins. Is there an accepted way to convert these for VenusOS sensor use, or calibrate for the voltage difference?
Am I missing a more convenient sensor options? I'd prefer to avoid shelling for the GX Tank 140 for one tank...