What about rust? Rust of the sensor?

Hi there
I'm trying to read the values generated by this sensor on a raspberry.
i have a WINGONEER AD / DA Converter PCF8591 installed and the data pin of the sensor connected to the ANA 0 port of the AD/DA. The raspberry and the AD/DA are connected via i2c

It seems like a value of 0xdc 0xdc is always received.

I'm using Java and the pi4j library for i2c.

Any one having suggestions to help out to read good values from the sensor?

hello. i have been using these sensors outdoors successfully. however occasionally after heavy rain I need to recalibrate the sensors again. Is there anything I need to do to prevent this? I tried covering them in epoxy however it didnt stick and stripped eventually after a week.

Hi
In theory, the SEN0193 sensor can be operated on 3.0 volts by bypassing
the sensor's voltage regulator and powering the 555 timer in the sensor
directly, but can't guarantee the timer in the best concussion point.

Hi all,

I'm having two major problems to solve. My intention is to put two of these sensors hooked up to a ESP8266.

1ª Problem, is that this particular component(ESP) only has one analog input (that-one I think is solved by multiplexing).

2ª problem is that the ESP8266 Analog input is (1.8V max) https://www.adafruit.com/pr... my blue analog wire when dry is giving me 2,5V, much higher than expected by the ESP.

Can anyone help me out solving this problem please, so that I can get accurate readings?

One more thing, I implemented a Resistive Voltage Divider (RVD), but my values go from 2.5V to a sudden 0.033V. I used two 74Ohm resistors.

Thanks in advance

Hello,
Can you tell me what is the frequency domain of the oscillator of this capacitive soil moisture sensor ?
It is insensitive to the mineral conductivity ?
Thank in advance for your help
Regards

Hello Asterion,

Welcome!

So I am not sure if I got you fully, do you suggest us to make the sensor to have the feature of wifi, so it could be inserted into the gardening earth 15-20cm?

If it is, I just want to say It's a great idea, it will save a lot of cables and people can use it more freely, thanks a lot for your contribution!