Soil Moisture Meter, Soil Humidity Sensor, Water Sensor, Soil Hygrometer for Arduino

The soil sensor is very easy to use, The two large exposed pads/leads function as probes for the sensor, together acting as a variable resistor. The more water that is in the soil means the better the conductivity between the pads will be and will result in a lower resistance, and a higher SIG out. It can be easily interfaced with ease for your home automation projects. This Moisture Sensor can be used to detect the moisture of soil or your pet plant’s water level, let the plants in your garden reach out for human help. This sensor uses the two probes to pass current through the soil, and then it reads that resistance to get the moisture level. More water makes the soil conduct electricity more easily (less resistance), while dry soil conducts electricity poorly (more resistance).

This is Soil Moisture Meter, Soil Humidity Sensor, Water Sensor, Soil Hygrometer for Arduino. With this module, you can tell when your plants need watering by how moist the soil is in your pot, garden, or yard. The two probes on the sensor act as variable resistors. Use it in a home automated watering system, hook it up to IoT, or just use it to find out when your plant needs a little love. Installing this sensor and its PCB will have you on your way to growing a green thumb!

The soil moisture sensor consists of two probes which are used to measure the volumetric content of water. The two probes allow the current to pass through the soil and then it gets the resistance value to measure the moisture value.

When there is more water, the soil will conduct more electricity which means that there will be less resistance. Therefore, the moisture level will be higher. Dry soil conducts electricity poorly, so when there will be less water, then the soil will conduct less electricity which means that there will be more resistance. Therefore, the moisture level will be lower.

Wiring Connection

VCC: 3.3V-5V
GND: GND
DO: Digital output interface(0 and 1)
AO: Analog output interface

Features :

1. Dual output mode, analog output more accurate
2. A fixed bolt hole for easy installation
3. With power indicator (red) and digital switching output indicator (green)
4. Having LM393 comparator chip, stable.

Package Includes :

1 x Soil Moisture Sensor Kit