Capacitive Soil Moisture Sensor v2.0
—NZ$6.90
Availability: Sold out
A capacitive soil moisture sensor that measures water content without exposing metal to the soil, so it does not corrode the way resistive probes do.
Specifications
- Capacitive sensing — no exposed electrodes
- Analogue voltage output proportional to moisture
- 3.3-5.5V supply
- Corrosion-resistant coated PCB
- About 98mm probe length
- Needs calibration in dry and saturated soil
What you can build with the Capacitive Soil Moisture Sensor v2.0
- Automatic plant watering systems
- Greenhouse and garden bed monitoring
- Home Assistant plant sensors
- Lifestyle-block irrigation control
- Classroom plant-science experiments
Compatibility
Works with any board that has an analogue input — Arduino, ESP32, Pico. The Raspberry Pi has no analogue input and needs an external ADC such as an ADS1115. Resistive probes are cheaper but corrode within weeks; this design is the reason to pay more.
Shipping
Dispatched from New Zealand with courier delivery nationwide, including rural addresses. Prices are in New Zealand dollars.