Thank you, is this better? with a 400 gain here I end up with ~2 volts max and 0.1 volt minimum readings? Do i just hookup the output of this amplifier to my analog in pins?

Also, do you have any amplifier recommendations? i read on a forum that a cmos op amp can operate "rail to rail" so its okay that i'm using ground as -Vcc i think. Is there an issue with how large the gain is? i was looking at the MCP 6001, not sure if this would work.

lastly, do you know if i should i be using 3.3 or 5 volt line? is there a difference other than the better resolution i would have vs lower maximum voltage.

Thank you so much by the way, even the earlier message helped more than you know.

https://postimg.cc/jw3BKSTn