Simple Soil Moisture Sensor/Detector Circuit
2018-1-4 · Circuit Diagram: Circuit Diagram of Soil Moisture Sensor Circuit is given below:. Working Explanation: This Soil Moisture Detector Circuit is very simple. Here we have used a soil moisture detector probe to sense the moisture in the soil and an NPN transistor to trigger the Buzzer and LED.This soil moisture detector probe is homemade and built using general purpose PCB (Perf board).
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