I am trying to make a IR glucometer that sends IR light through the glucose solution and depending on how much glucose is in it, the arduino would get a different reading. I have the IR emitter and detector set up, but my problem is that the change in readings between different glucose levels isnt large enough. Is there a way for me to amplify the input to the arduino so that I will be able to see a larger difference?
The Serial monitor shows ~39 when the IR emitter is active and ~892 when it is off, so I'm fairly certain the emitters and detectors are working correctly. I need a way to show different values depending on the glucose levels.
Right now I have a bunch of LM324 op amps.
I'm pretty new to arduino and electronics so any help would be HUGELY appreciated.
Thanks so much!!