I have implemented an ecowitt 1100 gateway with 2 WH51 soil probes.
1) In the Ecowitt App, I see the soil moistures correctly. I also see indoor temperature, humidity, and pressure, presumably from the GW1100.
However, I also see outdoor temperature, outdoor humidity, wind speed, and rainfall. Where are these numbers coming from?
if you do not own outdoor T/RH, wind and rainfall sensors, they will come from sensors in your neighbourhood - so-called ghost or phantom sensors.
You have two options:
1. benefit from the "free-of-charge" contribution of your neighbour
2. de-activate ("disable") the respective sensors in the GW1100 sensor ID page -
http://IP-address-of-your-GW1100--> SensorsID - you will find there the sensorID or IDs of the sensors providing these data
2) Is the only reason for not burying the wh51 sensor below ground (say, 12") because the transmission to the gateway is blocked?
yes, for such scenarios the WH51L has been made
3) Similarly, if I install a wh51L sensor
a) How do you dig the hole? Do people use these long auger drill bits, which are 2-3" in diameter? Just drop the probe in and cover with the dirt, leaving the top piece exposed?
b) how do I get it back out? Just pull on the cable? I am worried that compacted soil will lock it in, and I will break something pulling it up. The auger will destroy the cable...
you could use a pipe with a wider (5-10") diameter and fill it loosely with earth/soil
3) The values read from the meter do not seem to be any particular units; the AD values look like the output from an Analog to Digital converter chip. I calibrated my WH51 withe values Wet=1000 Dry=10. This scales the sensor readings so they match the gravimetric soil water % values (I prepared several samples of the same soil with measured amounts of water to get the appropriate gravimetric soil %). Any problem with doing it this way?
whatever you like - the procedure is described in our WiKi
https://meshka.eu/Ecowitt/dokuwiki/doku.php?id=start#wh51_wh51l
4) I am in Phoenix, with temperatures around 115 degF and lots of UV (11-13 UV Index). The sun destroys everything outside - plastic, cloth, metal plumbing, cars. Anyone have problems with sun destroying the WH51 or WH51L plastic casing? I put glass jars over mine, but maybe that is a problem? Transmission seems ok.
so far mine have survived the solar exposure, but I don't live in the desert
You can of course protect the sensors - as long as the protective measures do not impact the data transmission
Thanks,
Robert Brewington
eridanibrew@gmail.com
Casa Grande, AZ