Resistive Soil Moisture Sensor Module

The Resistive Soil Moisture Sensor Module is a cost-effective sensor designed to measure the moisture content of soil. It works by detecting the electrical resistance between two probes inserted into the soil, making it ideal for smart irrigation systems, gardening automation, and IoT-based agricultural projects. The module is widely compatible with Arduino, ESP8266, ESP32, Raspberry Pi, and other microcontrollers.

Features

• Dual output support: analog (A0) and digital (D0) signals
• Adjustable sensitivity using onboard potentiometer
• Easy integration with microcontroller platforms
• Suitable for automatic irrigation and plant monitoring systems
• Low power consumption for long-term use
• Simple plug-and-play design with probe and control board
• Cost-effective solution for DIY and educational projects
• Real-time soil moisture detection capability

Specifications

• Model: FC-28 / YL-69 Soil Moisture Sensor Module
• Operating Voltage: 3.3V – 5V DC
• Output Type: Analog (A0) and Digital (D0)
• Comparator IC: LM393
• Sensor Type: Resistive soil moisture probe
• Probe Material: Metal electrodes (resistive type)
• Adjustable Threshold: Yes, via potentiometer
• PCB Size: Approximately 32mm × 14mm
• Operating Temperature: 0°C to 50°C (recommended range)
• Compatibility: Arduino, ESP8266, ESP32, Raspberry Pi and similar boards