Soil Moisture Sensor – Analog and Digital Outputs

Description

Soil Moisture Sensor is a simple breakout for measuring the moisture in soil and similar materials. The soil moisture sensor is pretty straight forward to use. The two large exposed pads function as probes for the sensor, together acting as a variable resistor. The more water that is in the soil means the better the conductivity between the pads will be and will result in a lower resistance, and a higher AOUT.

Features:

• Digital Output Threshold Adjust Potentiometer
• Power and Digital Output Indicator LEDs
• Analog and Digital outputs
• Mounting hole for easy installation

Specifications:

• Operating voltage 3.3V-5V
• PCB size: 3.2cm x 1.4cm
• Power indicators: (red) and digital switching output indicator (green)
• Comparator Chip : LM393

Pinouts:

• VCC: .3.3V-5V
• GND: 0V Ground Reference
• DO: digital output  (0 or 1)
• AO: Analog output (0 – VCC)