Gravity: Analog Capacitive Corrosion Resistant Soil Moisture Sensor

Capacitive soil moisture sensor with corrosion-resistant design. Provides analog moisture output; compatible with low-voltage MCUs including Arduino.

Logical pinout · physical placement not verified

VCC
Gravity 3-pin interface supply for the capacitive soil moisture sensor; product/wiki state onboard regulator supports 3.3V to 5.5V low-voltage MCUs.
Type · PowerVoltage · 3.3V to 5.5V
GND
Ground return for the Gravity 3-pin sensor interface.
Type · GroundVoltage · 0V
SIG
Analogue moisture output from the capacitive soil moisture sensor; product page states analogue output is about 1.2V to 2.5V.
Type · AnalogVoltage · 1.2V to 2.5V analogue output

Pin	Type	Function	Voltage
VCC	Power	Gravity 3-pin interface supply for the capacitive soil moisture sensor; product/wiki state onboard regulator supports 3.3V to 5.5V low-voltage MCUs.	3.3V to 5.5V
GND	Ground	Ground return for the Gravity 3-pin sensor interface.	0V
SIG	Analog	Analogue moisture output from the capacitive soil moisture sensor; product page states analogue output is about 1.2V to 2.5V.	1.2V to 2.5V analogue output

Logical pinout · physical placement not verified

Pin details

3 connections

VCC
Gravity 3-pin interface supply for the capacitive soil moisture sensor; product/wiki state onboard regulator supports 3.3V to 5.5V low-voltage MCUs.
PowerVoltage · 3.3V to 5.5V
GND
Ground return for the Gravity 3-pin sensor interface.
GroundVoltage · 0V
SIG
Analogue moisture output from the capacitive soil moisture sensor; product page states analogue output is about 1.2V to 2.5V.
AnalogVoltage · 1.2V to 2.5V analogue output

Start wiring

Analog · UART · 3.3 – 5 V · Gravity

Confirm the data interface matches your host board.

Module pins: VCC, GND, SIG. Schematik maps them to your board in the app.

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Pinout