I am new to this so forgive me if its basic. We are hardware engineers investigating the development of hardware systems to home hydroponic small gardens.
After reading a lot, I could see that there are some factors you need to keep, some of them are : ph in water, ppm, water conductivity, temperature.
I still have a few holes.
I saw some simple DIY systems where people just use the Kratky method, where they put water in a box, with a little air left to the plant, and it works great without checking all of this stuff like pH, DO, E.C , etc. So, measuring them is a most, or just an enthusiasm of beginners? Do you really need that if not in a big scale?
As hardware engineer i have checked all ph and E.C sensors, the basic sensor, without any circuit to analyse it, costs more then 70$ , why is that ? It's the same for E.C , so I have started to ask, can you get this data from other aspects of the water like temperature? moisture ?
Seems that turning it to be smart, costs too much for home applications.