USD3.83
Soil moisture sensor uses capacitive sensing to detect the moisture level of the soil. Whenever there is water across two areas of the capacitor, the sensor can detect moisture level. The moisture reading is from 0 to 100%.
50 in stock
Soil moisture sensor has an exposed capacitor on it. Capacitor consists of a positive plate and a negative plate. When we insert the sensor into the soil, the soil becomes the dielectric medium.
Capacitor can store electrical energy in an electric field by accumulating electric charges on two plates. The ability of the capacitor to store charges is known as capacitance.
As water with higher permittivity than air, it polarizes more than air in an electric field. When the soil is wet, the capacitance rises.
By measuring the changes in capacitance, the soil moisture level can be obtained.
Supply voltage: 5V
Interface: Analog
Raw value return: 0-1023
Makecode Extension return: 0-100%
https://smarthon-docs-en.readthedocs.io/en/latest/Sensors_and_actuators/Soil_Moisture_sensor.html
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