
Overview
The sensor traces have a weak pull-up resistor of 1 MΩ.
The resistor will pull the sensor trace value high until a drop of water shorts the sensor trace to the grounded trace.
Believe it or not this circuit will work with the digital I/O pins of your Arduino or you can use it with the analog pins to detect the amount of water induced contact between the grounded and sensor traces.
Features:
- Grove compatible interface
- Low power consumption
- 2.0cm x 2.0cm Grove module
- High sensitivity
Application Ideas:
- Rainfall detecting
- Liquid leakage
- Tank overflow detector
Tech specs
Item |
Min |
Typical |
Max |
Unit |
Working Voltage |
4.75 |
5.0 |
5.25 |
V |
Current |
<20 |
mA |
||
Working Temperature |
10 |
- |
30 |
℃ |
Working Humidity (without condensation) |
10 |
- |
90 |
% |
Get Inspired

The holidays can be a great time to pick up a new passion, or start a new project! And if you are at home with friends and family, a DIY challenge can be just what you need to spend a few hours together – learning and laughing all the way. We’ve definitely kept all of this in mind while fine tuning our 2023 gift guides, full of ideas and inspiration for the special people on your list! We’re sure you’ll find something for everyone… and a treat for yourself too. Giving the gift of creativity A kit with step-by-step instructions and all the components you need can provide the perfect pastime, even with kids: you can go through the Starter Kit one project at the time to learn the basics of electronics and coding, or try your hand at IoT – it’s easy with the Arduino Oplà IoT Kit! This 8-projects-in-1-box gift allows even beginners to explore smart connectivity: anyone can have their smart lights system, personal weather station, or home security alarm ready by New Year’s Eve, and do the whole thing without coding, using the templates available on Arduino Cloud. And once the basics are mastered, the experience can be customized to infinite creative ideas: for example to monitor a room’s temperature and humidity levels, connect the heating to Alexa, or control Spotify – three ideas to make your time at home more pleasant, during the holidays and beyond. Learning something new in the new year Speaking of the new year, we have some great options for anyone making 2024 their year to learn something new. For example, the Make Your Uno Kit can take anyone from the basics of soldering to their first synth (also available as part of the Make Your UNO Soldering Bundle). Sound daunting? Not to worry: the learning experience is supported by a dedicated content platform with video tutorials, a 3D interactive viewer to help with the finest details of soldering, and instructions on how to program the board once it is finished.If you have someone