Raindrops Sensor Module: 두 판 사이의 차이

2025년 3월 27일 (목) 18:31 기준 최신판

The sensor utilizes the decrease in resistance as the area in contact with water increases, similar to the principle of a water level sensor (DM446).

Specifications

Operating Voltage [V]: 3.3 ~ 5
Output: Digital, Analog
Sensitivity adjustment possible with a variable resistor

Example Hardware

Arduino board
Jumper cables
Rainwater detection sensor

Connections

When connecting the sensor part to the module part, there is no polarity, so you can connect them arbitrarily.

Arduino	Raindrops Sensor	Module
5V		VCC
GND		GND
D7		DO
A0		AO
	connect	connect
	connect	connect

Example Code

Example code that outputs digital and analog values of the rainwater detection sensor to the serial monitor.

#define DO 7
#define AO A0

void setup(){
  pinMode(DO, INPUT);
  Serial.begin(9600);
  Serial.println("Start");
}

void loop(){
  Serial.print("AO : ");
  Serial.print("\t");
  Serial.print(analogRead(AO));
  Serial.print("\t");
  Serial.print("DO : ");
  Serial.println(digitalRead(DO));
  delay(100);
}

Execution Result

When no water is detected by the sensor

When water is detected by the sensor

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+{{#seo:|title=ArduWiki: Arduino Rain Detection Sensor Guide|title_mode=append|keywords=Arduino, Computer Science, Maker Education, Performance Assessment, Rain Detection Sensor, Arduino Project, Capstone Project, Arduino Example Code|description=How to use a rain detection sensor with Arduino (specs, circuit, example code). Useful for CS and maker classes.}}
 [[File:빗물감지센서대표이미지.jpg|center|class=coders100]]
 The sensor utilizes the decrease in resistance as the area in contact with water increases, similar to the principle of a [[Water Level Sensor(DM446)|water level sensor (DM446).]]