> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Gravity: Tipping Bucket Rainfall Sensor - I2C & UART **Type:** Product page · **SKU:** SEN0575 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia) **Page:** https://core-electronics.com.au/gravity-tipping-bucket-rainfall-sensor-i2c-uart.html ([markdown](https://core-electronics.com.au/gravity-tipping-bucket-rainfall-sensor-i2c-uart.html.md)) Arduino Gravity: Tipping bucket rainfall sensor is the perfect tool for measuring rainfall. With no electronic components inside and a hollow bottom... ## Pricing - **Price:** $54.85 (inc GST) — $49.86 AUD, exc GST - **Quantity discounts:** 6+ $47.37 (exc GST) · 12+ $45.37 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 4 today, and up to 900 more in 8–12 days. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0575:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN0575:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description 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:bit](https://core-electronics.com.au/micro-bit-v2-australia.html), [Arduino](https://core-electronics.com.au/arduino/boards.html), [ESP32](https://core-electronics.com.au/development-boards/esp32.html), [Raspberry Pi](https://core-electronics.com.au/raspberry-pi.html). 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. **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. ![Wiring Diagram of Gravity: Tipping Bucket Rainfall Sensor and Arduino Uno](https://core-electronics.com.au/attachments/localcontent/Connection-Diagram_(1)_107365ff509.png) Wiring Diagram of Gravity: Tipping Bucket Rainfall Sensor and Arduino Uno **If you want to know the principle of the rain gauge, [please click here to read more](https://wiki.dfrobot.com/How_do_Rain_Sensors_Work).** ### Features - Measures rainfall in millimeters and system operating time - No electronic components inside - Hollow bottom design for automatic drainage - Supports I2C and UART data outputs - Compatible with micro:bit, Arduino, ESP32, Raspberry Pi - Integrated with Gravity interface - Ready-to-go libraries for easy setup of rain monitoring system ### Applications - Weather monitoring - Environmental monitoring - Smart farming - Research and education ### Specification - Working Voltage: 3.3 to 5.5V DC - Working Current: <3mA - Output Signal: I2C/UART - Resolution: 0.28mm - Operating Temperature: -40 to 85°C - PCB Size: 32mm x 37mm/1.26 x 1.46 inches - Tipping Bucket Size: 118mm\*59mm\*80mm/4.65 x 2.32 x 3.15inches - Mounting Hole Size: 3.1mm - Weight: 119g (Tipping bucket), 5.3g (PCB) ### Documents - [Product wiki](https://wiki.dfrobot.com/SKU_SEN0575_Gravity_Rainfall_Sensor) - [Rain Sensors Principle](https://wiki.dfrobot.com/How_do_Rain_Sensors_Work) ### Parts List - Gravity: Tipping Bucket rainfall Sensor x1 - Signal Adapter x1 - Gravity-4P I2C/UART Sensor Connector x1 ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0575-1.jpg)