Gravity: Tipping Bucket Rainfall Sensor – Arduino Rain Gauge I2C

The Gravity: Tipping Bucket Rainfall Sensor is a high-precision sensor designed for accurate rainfall monitoring in weather stations, environmental systems, and smart agriculture. Based on the tipping bucket principle, it delivers rainfall measurements in millimeters and system operating time through I2C or UART outputs. This rainfall sensor is an essential component for any professional weather station setup seeking reliable data.

Unlike conventional sensors, this sensor contains no electronic components inside, ensuring long-term durability and excellent performance. Its hollow bottom design allows automatic drainage of rainwater, improving stability and response sensitivity. As a robust Arduino rain gauge, it simplifies complex environmental data collection for smart agriculture and remote monitoring applications.

Key Features

• Measures rainfall in millimeters with a 0.28mm resolution for your weather station

• No internal electronic components for greater durability in this rainfall sensor

• Automatic drainage design for reliable long-term monitoring in smart agriculture

• Supports I2C and UART data output for an easy to use Arduino rain gauge

• Compatible with Arduino, micro:bit, ESP32, and Raspberry Pi

• Gravity interface for easy connection and setup of the rainfall sensor

• Includes ready-to-use libraries for fast integration into an Arduino rain gauge project

Applications

• Weather monitoring systems using this precise rainfall sensor

• Environmental data collection for an integrated weather station

• Smart farming irrigation control with an Arduino rain gauge

• Educational and research projects involving rainfall sensor technology

Specifications

• Working Voltage: 3.3V 5.5V DC

• Working Current: <3mA

• Output Signal: I2C / UART

• Resolution: 0.28mm

• Operating Temperature: -40C to 85C

• PCB Dimensions: 32mm x 37mm (1.26 x 1.46 inches)

• Tipping Bucket Size: 118mm x 59mm x 80mm (4.65 x 2.32 x 3.15 inches)

• Mounting Hole Size: 3.1mm

• Weight: 119g (Tipping bucket), 5.3g (PCB)

Note: The included signal adapter board is not waterproof and should be kept dry during weather station use.

In the Box

• 1 x Gravity: Tipping Bucket Rainfall Sensor

• 1 x Signal Adapter

• 1 x Gravity-4P I2C/UART Sensor Connector