ESP32 moisture sensor streaming to AWS

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I compare several moisture sensors, including just using the ESP32's touchpad capability to measure soil moisture. The application is running on Mongoose OS and transmits the data to AWS (Amazon Web Services) via MQTT.
Example code: github.com/corgitronics/esp32...
You will have to update a couple of the files, as noted in the README.md file.
DF Robot moisture sensor
www.amazon.com/DFROBOT-Gravit...
On Aliexpress: www.aliexpress.com/w/wholesal...

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Опубликовано:

17 сен 2018

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Комментарии : 14

@LOSIMONASSI 4 года назад

Amazing, I have been looking for it since a long time ! Thanks !

@kaysenzion7902 2 года назад

I guess it is quite off topic but do anybody know of a good website to stream new movies online?

@microfix6035 5 лет назад

Great videos all the. Where can I find them metal arm holder ?

@xkanight 5 лет назад

Hello, I'm trying to find a way to use this system for water detection around a sump pump, water softener and other areas in my mechanical room. Do you have any advice on how to do this. I would like to run multiple sensors off one board so I can be alerted on the location of the leak. Also my plan would be to use parallel strands of either copper tape, or stainless steel wire as a perimeter sensor. Is there power running through the sensor wire or is it just measuring independence?

@Corgitronics 5 лет назад

For your purpose, you might consider using the capacitive sensirs that I found on AliExpress and connect them to a RaspberryPi, perhaps a PiZeroW. Since you only want to detect the presence of moisture (on/off) then you don't really need an analog input for these sensors. If you go with copper wire, be aware that it will oxidize and loose sensitivity. I'd recommend stainless steel wire, or perhaps aluminum wire for that. Going with the bare conductor approach is simple, but the wires will have a low voltage potential between them, based on whatever power supply/battery you use. There must be plenty of circuit examples for this approach to look at.

@spikeywayent 2 года назад

where is the github repo for this project? very well explanation and thank you for your time creating this content.

@Corgitronics 2 года назад

Github has wiped out some of my repos after I changed my subscription level. I will have to find a local copy of the code, but it's from years ago.

@Corgitronics 2 года назад

Okay, I was able to find the local copy and uploaded it to github.com/corgitronics/esp32-moisture-mqtt/tree/main You will have to update a couple of the files, as noted in the README.md file.

@Faewks 3 года назад

Hey, thanks for this video! I have one question: I have read that some of this sensors need 5 V to function correctly. Did you use an external 5 V source or did you use 3,3 V from the ESP32? Thank you!

@Corgitronics 3 года назад

The ESP32 is being powered by the 5V USB cable, but it has its own 3.3V regulator. I don't recall if I ran the commercial sensors on 3.3 or 5V, but they seem to work well enough at the bottom of their rated voltage range.

@viruscode95 4 года назад

Hi, im new to this kinda thing, at 7:32 you said that we can use any pin that have "TOUCH*", im using ttgo lora sx1278 esp32. Does it work the same? Im hoping to receive your reply.

@Corgitronics 4 года назад

It looks like the TTGO devices do expose some of the touch pins. Looking at the Pin Schematic on this page www.lilygo.cn/prod_view.aspx?TypeId=50003&Id=1271&FId=t3:50003:3 it shows that Touch2 - Touch6 are available.