Product description
Soil moisture sensor for measuring moisture levels in soil. The sensor measures the conductivity between two exposed contact areas, which together act as a variable resistor. Higher moisture levels result in lower resistance and a higher analog output signal. The board features a pre-programmed ATtiny85 that converts the analog signal to I²C. Connection is easily made via Qwiic. Programming connections are also broken out for I²C and SPI. The sensor areas feature an ENIG (Electroless Nickel Immersion Gold) surface finish for improved corrosion resistance.
Specifications:
- Manufacturer: SparkFun
- Model: SEN-24409
- Type: Soil moisture sensor
- Measurement principle: Resistive/conductivity-based
- Microcontroller: ATtiny85
- Interface: I²C and SPI
- I²C address: 0x28
- Output signal: Analog (SIG), depending on moisture level
- Connection: 1x Qwiic
- Sensor area surface finish: Nickel/gold