I'm using a moisture sensor (SEED_1010) wich has an operational amplifier in it.
What exactly does it do? Ive read that it is an differential amplifier or something.
I have no idea what it does, ive searched multiple sites but I can't understand them.
Would anyone be possible to explain it to a newbie?
I'll add the module scheme
Also I can use the sensor as analog or digital.
What is the difference??
They will work the same no?