Uncle Buzz wrote:Did67 wrote:If someone wants to "tweak", I am willing to pay for the gear and then assess the reliability. I am in the process of "calibrating" a pot with a strawberry plant with weighing and comparison with the tensions of the tensiometer ... The idea is to obtain the curve giving the humidity of the soil (quantity of water in the soil - by weighing) as a function of the tension (measured by the tensiometer). This will only be valid for my soil ...
I will be able to do the evaluation of the capacitive measurement in the same soil ...
I have to "improve" my blood pressure sensors, in particular to protect them from humidity (oxidation of the electronics), and they are not autonomous: they are connected by radio to a "server" which records the history. It works well, but it takes "maintenance" whether hardware (oxidation fault) or software. Making all this "general public" so that it works without bothering to keep it running takes a lot of work.
I was not "mainstream" - well, it exists in full probe, but of course, a little expensive ...
I first wonder about the reliability of these measurements - does the displayed% humidity correspond in "real soil", roughly ???
For it to be "cheaper", you would need a "measuring box" and a series of probes with a "click-clack" connection. So an investment in data collection / processing and 36 3-ball probes, at each place where you want to measure. If it's reliable.