Soil moisture sensor LM39

A sensor with a probe enables soil moisture to be measured. It is adjustable via a sensitivity potentiometer. It has 2 outputs: digital D0 and analogue A0, making it compatible with most microcontrollers e.g. Arduino and Raspberry Pi.. The digital output is used to signal that the set value has been exceeded, while the analogue output returns the exact value of the measured humidity. The sensor is powered by 3.3V to 5V.. It is made up of three parts: the measuring probe, detector and wires.. The measuring probe is connected by wires to the detector module and placed in the soil whose moisture content will be measured. Specification:

* Operating voltage: 3.3V to 5V

* Two outputs: digital and analogue

* Two status LEDs

* Sensitivity adjustment of the digital output via potentiometer

* Inputs: VCC, GND, D0 (digital output), A0 (analogue output)

Kit composition:

* Measuring probe

* Detector module with comparator

* Connection wires