DFRobot waterproof capacitive soil moisture sensor

With this waterproof analog soil moisture sensor from DFRobot, you can measure the moisture of plants and detect when the plant needs to be watered. The sensor has an integrated amplifier. Therefore, it can be directly connected to an analog input from an Arduino. The measuring probe is inserted into the soil and measures the capacitance of the earth, which changes with the moisture. This capacitive soil moisture sensor, also known as a Capacitive Soil Moisture Sensor, does not have wear or corrosion like a conventional soil moisture sensor, making it more durable.

Info: Since the sensor's cut edges are not sealed, moisture may enter the circuit board through the cut edge. If you want to extend the lifespan, you should seal the cut edges with clear lacquer or epoxy resin.

Documentation:

• DFRobot Wiki
• Schematic

Connection of Soil Moisture Sensor to Arduino Uno:

Technical Details:

• Cable length: 1.5m
• Operating voltage: 3.3 to 5.5VDC
• Voltage regulator: XC6206P302
• Chip: TLC555CDR
• Analog output voltage: 0 to 3VDC
• Capacitive measurement principle
• Color: Black
• Dimensions: 175 x 30 x 14mm
• Weight: 70g

Package Includes:

• 1x DFRobot Waterproof Capacitive Soil Moisture Sensor