Hello,I tried to find an easy and reliable way of measuring conductivity of water samples but failed by looking on very complicated schematics. I don't want to use voltage divider as it makes more problems than usefull data. Please can you provide me with more information about this topic?Thanks.
What is your problem with voltage dividers?
But the problem is that Arduino would have to then measure frequency which is tricky.
The problem is, that there's too much voltage across probe and electrolysis occurs.
There have been TDS (total dissolved solids) threads on this site.This one (post#40) might start you off.Leo..
That sounds promising! A was doing some research and made that 555timer conductivity circuit. Well it works sort of but DC voltage is still problem. I'm using in my project old PC power supply which has 5+V and 5-V can I make use of it?? I was even thinking about H-bridge and inverters to convert DC to AC. What's the best idea for that?