The soil moisture sensor module , built around the LM393 comparator, gives an active-low (L) level output when the soil is dry (determined by a pre-setted threshold value). This digital output (wet ...

Here is a tested Arduino project that uses 3 sensor probes as water level indicator with 3 leds and one LCD display + a simple controller that turns on a motor when the water has reached the desired ...

This neural network runs on an Arduino MKR GSM 1400 module. ... Having worked with (+designed+built) water quality sensors, I would take this article with a huge grain of salt.