Soil Moisture Sensor

This soil moisture sensor provides both analogue and digital outputs, making it compatible with Arduino, Raspberry Pi, and other microcontrollers. Use it to monitor soil moisture levels for automated watering systems, plant health monitoring, or gardening projects.

The digital output threshold is adjustable via an onboard potentiometer, allowing you to set the exact moisture level that triggers the digital signal. LED indicators show power status and digital output state.

Key Features

• Dual Output – Both analogue and digital outputs available
• Adjustable Threshold – Potentiometer sets digital trigger point
• Wide Voltage Range – Works with 3.3V and 5V systems
• LED Indicators – Power (red) and digital output (green) status
• LM393 Comparator – Reliable digital output circuit

Specifications

• Operating Voltage: 3.3V – 5V
• Comparator: LM393
• PCB Size: 30 × 15mm
• Probe Size: 60 × 20mm
• Cable Length: 21cm

Pinout

• VCC: 3.3V – 5V power
• GND: Ground
• DO: Digital output (high/low)
• AO: Analogue output (0 – VCC)

Ideal For

• Automated plant watering systems
• Garden monitoring projects
• IoT soil sensors
• Agricultural applications