Soil Humidity Moisture Sensor Module

Description

A Soil Moisture Sensor Module measures the water content in soil by detecting changes in electrical resistance or capacitance. It outputs this data to microcontrollers (like Arduino) for automated plant care, signaling exactly when to water your garden and optimizing irrigation. [1, 2, 3]

Core Specifications

• Operating Voltage: \(3.3\text{V} – 5\text{V}\) DC [1]
• Output Modes:
  • Analog (AO): Continuous readings for precise moisture levels.
  • Digital (DO): Switches to \(HIGH\) or \(LOW\) when a set threshold is crossed. [1, 2, 3, 4, 5]
• Key Components: A 2-pin soil probe, an interface module with an LM393 comparator, and a potentiometer to adjust sensitivity. [1, 2]