DFRobot Gravity: Tipping Bucket Rainfall Sensor – I2C & UART


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Approx Restocking Date: 25 to 30 Days
SKU: 1638493
  1. Working Voltage: 3.3 to 5.5V DC
  2. Working Current: <3mA
  3. Output Signal: I2C/UART
  4. Resolution: 0.28mm
  5. Operating Temperature: -40 to 85°C


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Brand: DF Robot
Category: Environmental Sensors

This DFRobot rainfall sensor is a reliable and convenient tool for measuring rainfall.

Based on the principle of tipping bucket rainfall, the rainfall sensor provides users with rainfall values in millimeters and system operating time. The sensor has no electronic components inside and features a hollow bottom design that allows rainwater to automatically drain, making it more stable and sensitive.

It supports I2C and UART data outputs, compatible with micro:bitArduinoESP32Raspberry Pi. Integrated with the easy-to-use Gravity interface, this rainfall sensor can be used to set up a rain monitoring system easily with the provided ready-to-go libraries. The tipping bucket rainfall sensor can provide high-quality rainfall data for weather stations, environmental monitoring stations, or smart farms.





  1. Weather Monitoring
  2. Environmental monitoring
  3. Smart farming
  4. Research and Education

What is a tipping bucket rainfall sensor?

The tipping bucket rainfall sensor is one of the commonly used precipitation monitoring devices in meteorological observations. It consists of a collection container and a measuring mechanism. During rainfall, water enters the collection container through the top inlet and flows into the tipping bucket through a funnel. When a certain amount of water accumulates, the tipping bucket loses its balance and tips over, generating a pulse signal with each tip. By recording the number of pulse signals, the controller can calculate the rainfall amount.

Note: The signal adapter board is not waterproof. Do not expose the signal adapter board to rain.

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  1. Measures rainfall in millimeters and system operating time
  2. No electronic components inside
  3. Hollow bottom design for automatic drainage
  4. Supports I2C and UART data outputs
  5. Compatible with micro: bit, Arduino, ESP32, Raspberry Pi
  6. Integrated with Gravity interface
  7. Ready-to-go libraries for easy setup of the rain monitoring system
  8. Resolution: 0.28mm
  9. Tipping Bucket Size: 118mm*59mm*80mm/4.65 x 2.32 x 3.15inches
  10. Weight: 119g (Tipping bucket), 5.3g (PCB)

Package Includes:

  • Gravity: Tipping Bucket rainfall Sensor x1
  • Signal Adapter x1
  • Gravity-4P I2C/UART Sensor Connector x1
SKU: 1638493 Category:
Working Voltage

3.3 to 5.5V DC

Working Current


Output Signal


Operating Temperature (°C)

-40 to 85

PCB Size ( L x W ) mm

32 x 37

Mounting Holes Diameter (mm)


Shipping Weight 0.0004 kg
Shipping Dimensions 7 × 6 × 4 cm
6 Months Warranty

This item is covered with a supplier warranty of 6 months from the time of delivery against manufacturing defects only. This is a quality product from the original manufacturer. Only manufacturing defects are covered under this warranty. Reimbursement or replacement will be done against manufacturing defects.

What voids the warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China