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how-to-use-raindrop-sensor-with-arduino-leonardo-acf24d-en.md

Precipitation Detection: Raindrop Sensor

The Raindrop Sensor is a crucial component for weather stations and outdoor automation. By detecting even the slightest drizzle, it allows your Arduino to make preemptive decisions before a massive downpour hits.

Rain sensor Arduino Project

Read: What is Arudino? How does it work ? What are the application of it ?

How It Perceives Rain

The sensor consists of a large flat PCB with exposed zig-zagging nickel-plated lines.

  • Dry state: The air between the lines prevents electricity from flowing. Resistance is high (Reading is ~1023).
  • Wet state: Pure water doesn't conduct well, but rainwater contains minerals. When a drop bridges the gap, it acts as a resistor, allowing current to pass. Resistance drops (Reading falls to < 500).

Necessary Components

  • Arduino Uno/Leonardo/Nano.
  • Raindrop Sensor Board + LM393 Comparator Module.
  • Relay Module (Optional): If you want to automatically trigger an outdoor awning.
  • Jumper Cables.

Angle for Success

To ensure long-term reliability, the sensor plate must be mounted at a 30-degree to 45-degree angle. This ensures that the water slides off into a puddle over time. If mounted perfectly flat, a single rainstorm will keep the sensor triggered for two days!

ข้อมูล Frontmatter ดั้งเดิม 

apps:
  - "1x Arduino IDE"
author: "edwardthe"
category: "Sensors & Environment"
components:
  - "1x Ceramic Capacitive Rain Sensor"
  - "1x Jumper wires (generic)"
  - "1x Arduino Leonardo"
description: "Is it raining outside? Learn how to detect water droplets on a surface to close roofs, disable sprinklers, or alert your phone."
difficulty: "Easy"
documentationLinks: []
downloadableFiles:
  - "https://projects.arduinocontent.cc/cde08878-bb73-427f-8bf3-049d7f41cdbc.txt"
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lang: "en"
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seoDescription: "Learn how to interface a Raindrop Sensor with Arduino Leonardo for your next automation project. Simple and effective guide."
tags:
  - "arduino leonardo"
  - "raindrop sensor"
  - "arduino rain sensor"
  - "arduino rain sensor project"
  - "arudino project"
  - "rain sensor"
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title: "How to use Raindrop Sensor with Arduino Leonardo"
tools: []
videoLinks:
  - "https://www.youtube.com/embed/Fw6zuZc_gak"
views: 24220