Gravity: URM09 Ultrasonic Distance Sensor (2～500cm, Analog)
The ultrasonic sensor measures distances using sound waves, features built-in temperature compensation, analog output, and supports Arduino and Raspberry Pi.
Pinout
- GNDGravity 3-pin connector, ground pin
Ground for the Gravity URM09 analog ultrasonic sensor connector.
Type · groundVoltage · 0V - VCCGravity 3-pin connector, power input pin
Power input for the URM09 sensor. The DFRobot wiki specifies 3.3V to 5.5V DC supply.
Type · powerVoltage · 3.3V to 5.5V - A / SignalGravity 3-pin connector, analog output pin
Analog distance output. DFRobot documents the distance conversion as Distance = Vout(mV) × 520 / Vin(mV).
Type · analog outputVoltage · Analog output ratiometric to supply voltage
| Pin | Position | Type | Function | Voltage |
|---|
Start wiring
0V · 3.3V to 5.5V
Verify supply voltage and logic levels before powering up.
Module pins: VCC, GND. Schematik maps them to your board in the app.
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