arduino › sensor module
generic Capacitive Soil Moisture Sensor v1.2
Capacitive type doesn't corrode like the resistive ones. Calibrate dry/wet at install — every soil mix has a different curve. PCB coating fails after ~6 months in soil; expect to replace yearly.
Specifications
- interface
- analog
- voltage v
- 3v3_or_5v
- library arduino
- none (analogRead)
- accuracy
- indicative
- range
- wet/dry/in-between
- pin count
- 3
Sources
- SparkFun open product catalog · ingest 2026-05-06