DHT11 溫濕度感測模組

描述

技術規格

1.訊號傳輸型式: 數位 (Digital)

2.電壓範圍：3.0V ~ 5.5V。

3.測溫範圍：濕度 20~90%RH，溫度 0℃到50℃

4.精度：濕度 ±5%，溫度 ±2℃

商品內容

• DHT11 溫濕度感測模組                  1個
• RJ11 6P4C  25cm 信號線                 1條

 

程式範例

 在此範例配合S4A IO Board 做簡單實驗顯示出溫濕度。

#include <dht.h>

#define dht_dpin 2 //Set channel sensor

dht DHT;

void setup(){

  Serial.begin(9600);

  delay(300);//Let system settle

  Serial.println(“Humidity and temperature\n\n”);

  delay(700);//Wait rest of 1000ms recommended delay before

  //accessing sensor

}//end “setup()”

void loop(){

  //This is the “heart” of the program.

  DHT.read11(dht_dpin);

    Serial.print(“Current humidity = “);

    Serial.print(DHT.humidity);

    Serial.print(“%  “);

    Serial.print(“temperature = “);

    Serial.print(DHT.temperature);

    Serial.println(“C  “);

  delay(800);

//Don’t try to access too frequently… in theory

  //should be once per two seconds, fastest,

  //but seems to work after 0.8 second.

}// end loop()

  

接線範例

 接線方式如果搭配S4A IO Board只要把電話接頭(RJ11)接到標示D2D3孔位即可完成連接。