Elecrow Crowtail Capacitive Moisture Sensor V2.0 for Arduino & IoT
Elecrow Crowtail Capacitive Moisture Sensor V2.0
The Elecrow Crowtail Capacitive Moisture Sensor V2.0 measures soil moisture by capacitance rather than resistance, avoiding electrode corrosion and delivering stable readings over time. Designed for Arduino, ESP8266, and other microcontrollers, it outputs an analog voltage proportional to moisture level, making it a reliable choice for automatic plant watering systems, greenhouse monitoring, and IoT agriculture projects.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 3.3V – 5V DC |
| Output Signal | Analog (0 – VCC) |
| Probe Material | FR‑4 with capacitive traces |
| Connector Type | Crowtail (compatible with Grove) |
| Dimensions | 99mm × 20mm × 5mm (probe) |
What You Can Build With This
- Automatic plant irrigation triggered by dry soil
- Low‑power IoT soil monitor using ESP8266 and cloud logging
- DIY smart greenhouse with multi‑zone moisture mapping
- Educational kit for teaching analog sensor integration
Compatibility
The sensor works with any development board that accepts an analog input, including Arduino UNO, Mega, Nano, ESP32, ESP8266, and Raspberry Pi (via external ADC). Its 3.3V/5V tolerance makes it safe for both logic levels. Pair it with Crowtail base shields or standard Grove‑compatible converters for plug‑and‑play wiring.
Wiring Notes
Connect the sensor’s VCC and GND to your board’s power, then attach the analog signal pin to any analog input (A0 on Arduino). Avoid submerging the top edge of the probe in water to keep the connector dry. Insert the probe fully into the soil for consistent readings.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino UNO?
Yes, connect VCC to 5V, GND to GND, and the analog output to any analog pin such as A0. No additional libraries are needed—simply read the analog value.
How does capacitive moisture sensing differ from resistive sensors?
Capacitive sensors measure changes in dielectric constant rather than electrical resistance between electrodes. This eliminates direct current path through the soil, dramatically reducing probe corrosion and extending sensor life.
What output values represent dry vs. wet soil?
In dry soil, the output voltage is high (close to VCC). As moisture increases, voltage drops. Actual thresholds vary; it’s recommended to calibrate by reading serial values when the probe is in dry soil and in water–logged soil.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items