Capacitive Soil Moisture Sensor V2.0 Analog Waterproof Corrosion Resistant

Capacitive Soil Moisture Sensor V2.0 – Analog, Waterproof & Corrosion Resistant

The Capacitive Soil Moisture Sensor V2.0 measures soil water content using capacitive sensing rather than resistive probes, making it significantly more durable and accurate over time. Unlike resistive sensors, it does not corrode or degrade in moist soil, ensuring reliable long-term performance in outdoor and greenhouse deployments.

Key Specifications

• Sensing Method: Capacitive (non-contact with soil)
• Output: Analog voltage (0–3.3V range)
• Operating Voltage: 3.3V – 5V DC
• Output Voltage Range: ~1.2V (wet) to ~2.8V (dry) at 3.3V
• Probe Material: FR4 PCB with ENIG coating (corrosion resistant)
• Cable Length: ~20cm with 3-pin Dupont connector
• Version: V2.0 (improved noise filtering over V1.x)

Compatibility & Use Cases

This sensor connects directly to any ADC-capable pin on Arduino, ESP32, NodeMCU, and Raspberry Pi Pico. Common applications include:

• Smart irrigation and automated plant watering systems
• IoT-connected greenhouse and farm monitoring
• Soil health monitoring for precision agriculture
• Home garden automation with ESP32 and MQTT
• STEM and environmental science project builds

Read the analog output with your ADC and map the voltage range to a 0–100% moisture percentage for intuitive display and threshold-based control.

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