General
Soil moisture sensor project
OpenSprinkler already has an input to connect external sensors. In principle, it works like this: If watering is pending, it is checked whether the sensor allows it, then watering starts, if not, then not. So the whole thing is a yes/no game (digital). There are a variety of solutions on the market, but none of them seem optimal to me.
OpenSprinkler By the way, 3.0/3.2 has a 5V DC output – labeled “VIN” for the power supply of the sensor.
I see the following points as important:
– Design as a capacitive sensor: important for protection against corrosion
– Durability: maintenance-free and stable
– 24V AC or 5V DC supply
What's your solution?
Edit: My solution is presented here: Soil moisture sensor
I'm now starting to design my garden and actually intended to get the greenIQ. Well, there is no more now. Now I have to reschedule my garden irrigation.
The alternative to greenIQ is the OpenSprinkler beautiful.
I am also now looking for a robust soil moisture sensor.
I came across a model that is affordable and not painted away after a year.
Possibly a solution for the project.
https://www.reichelt.de/bodenfeuchtigkeitssensor-12-v-dc-m-173-p108537.html?PROVID=2788&gclid=EAIaIQobChMI2NfX-syq4gIVEUTTCh3D0wsGEAYYAyABEgKBfPD_BwE&&r=1
I am also curious to see how the soil moisture sensor project develops with you.
Hello William,
unfortunately it is not a capacitive sensor. Yours works by sending electricity through the ground between the two metal pins. This leads to corrosion on the pins and toxins accumulate in the soil. Yes, it will work, especially at first. Corrosion is sluggish and after 3-4 years the sensor reports nothing but nonsense.
A capacitive sensor is better.
Hallo,
Unfortunately, the information from OpenSprinkler but good advice sown. As a customer, I would like product examples to be given here at the same time.
Can I use this sensor:
https://dvs-beregnung.de/kapazitiver-bodenfeuchte-sensor-inkl-temperaturmessung-truebner-smt50-arduino?curr=EUR&gclid=Cj0KCQjwla7nBRDxARIsADll0kBxU0v3c10ZYIKotw9t3hrwRU0cJtnXKCFd–SvQ4hUL5xGlAzj8noaAvNaEALw_wcB
Or maybe you have another. Suggestion where compatibility is guaranteed?
Yes, almost! Exactly with this soil moisture sensor I have already had experience. However, you still need an A/D converter openSprinkler. Details will follow soon!
Cool. Can you recommend an A/D converter?
Have a look in the shop...