Gravity: Steam Sensor

Analog steam/moisture sensor that increases output voltage with surface humidity; connects to Arduino IO shield. Not waterproof. Can serve as a rain detector, steam switch, or touch sensor.

Logical pinout · physical placement not verified

Analog outputblue wireblue wire
Analogue voltage output from the steam sensor. DFRobot specifies Analog output on the blue wire.
Type · AnalogVoltage · 0-4.5V at 5V supply, or 0-3.0V at 3.3V supply, per DFRobot product page.
GNDblack wireblack wire
Ground wire for the Gravity steam sensor. DFRobot specifies GND on the black wire.
Type · GroundVoltage · 0V return
Powerred wirered wire
Power supply wire for the Gravity steam sensor. DFRobot specifies Power on the red wire.
Type · PowerVoltage · 3.3V or 5V power supply, per DFRobot product page.

Pin	Position	Type	Function	Voltage
Analog outputblue wire	blue wire	Analog	Analogue voltage output from the steam sensor. DFRobot specifies Analog output on the blue wire.	0-4.5V at 5V supply, or 0-3.0V at 3.3V supply, per DFRobot product page.
GNDblack wire	black wire	Ground	Ground wire for the Gravity steam sensor. DFRobot specifies GND on the black wire.	0V return
Powerred wire	red wire	Power	Power supply wire for the Gravity steam sensor. DFRobot specifies Power on the red wire.	3.3V or 5V power supply, per DFRobot product page.

Logical pinout · physical placement not verified

Pin details

3 connections

Analog outputblue wire
Analogue voltage output from the steam sensor. DFRobot specifies Analog output on the blue wire.
AnalogVoltage · 0-4.5V at 5V supply, or 0-3.0V at 3.3V supply, per DFRobot product page.
blue wire
GNDblack wire
Ground wire for the Gravity steam sensor. DFRobot specifies GND on the black wire.
GroundVoltage · 0V return
black wire
Powerred wire
Power supply wire for the Gravity steam sensor. DFRobot specifies Power on the red wire.
PowerVoltage · 3.3V or 5V power supply, per DFRobot product page.
red wire

Start wiring

Analog · UART · 3.3 – 5 V · Gravity

Verify supply voltage and logic levels before powering up.

Module pins: Power / red wire, GND / black wire, Analog output / blue wire. Schematik maps them to your board in the app.

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