@Yveaux thank you for your help! yes, that makes a lot of sense actually. My ignorance on the matter kicked-in once again... sorry
What I'm missing so is how to create a sensor node which can be operated on battery and take measurements every "x" seconds/minutes/hours: shall I leave the Gateway always on and then configure differently another Node-MCU to act as a Sensor Node ?
Edit: In fact all of this was meant, for me, to be a "test run" bedore developing the whole system. I got a little off-road with the deepSleep and Battery thing, but I wanted to have a real-word-test of my sensor left for a day in the soil while sending reliable data to controller. As I'm reading even more documents and forum post, it's getting clear to me that the best thing would be "ask to the comunity" their experience with HW nodes, thus I can decide which one is best for my case.
Hi there! Reading the Watermark sensor is no easy task indeed. Took us a while to get accurate and reliable data out of these sensors.
First of all, take a look at the official documentation provided by Irrometer: https://www.irrometer.com/200ss.html
Especially the pseudo-AC excitation is very important and make sure you calibrate the readings using the soil temperature.
There's quite some off-the-shelf hardware on the market already. Look for a device that has a low power consumption so you can measure throughout the year, for example:
https://www.crodeon.com/blogs/news/connecting-a-watermark-sensor-to-the-cloud
Let me know if you have any more questions!
Do some debug on the node and on gateway and check if data is actually sent from the node and received by gateway. Also use wait instead of sleep if you are using it as a repeater and relay actuator.
Really nice, did you buy the glass plates from there ?
https://www.aliexpress.com/item/2gang-golden-small-glass-switch-panel-match-with-Bingo-Elec-frame-glass-or-aluminum-and-2gang/32393507034.html
If not, can you please tell where you get them from ? Thank you !
