Hi everybody! I'm designing a "smart bottle" that measure the TDS (=Total Dissolved Solids) in tap water, but I'm just an Arduino beginner. Anybody has a tutorial to make it? I found in the forum this pdf that explain how to do it, but on a PIC18F1220 microcontroller
https://hal.inria.fr/file/index/docid/635652/filename/TDS_Logger_RJP2011.pdf but I'm having problems understanding the circuit and how to adjust it to Arduino.
Any help will be really appreciated! Thanks