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prev8. 溫溼度感應器AM2301(DHT21)
9-1 變數next
Arduino基礎實作

8-1 基本使用

一、函式庫下載

首先到Adafruit 網站或是課程網站下載 DHT11 的函式庫 http://github.com/adafruit/DHT-sensor-library 
解開壓縮檔後將整個 DHT-sensor-library-master 資料夾放到 Arduino IDE 的 library 目錄下

例如：C:\Program Files (x86)\Arduino\libraries

亦可直接用Arduino IDE 的管理程式庫→搜尋

 

 

20190704 更新：需再安裝 Adafruit Unified Sensor 函式庫

 

二、範例程式

打開Arduino IDE, 在 "檔案/範例" 下就可以看到 DHT Sensor library 了 

 

依照範例程式說明，傳感器data腳要接pin 2

打開序列埠監看視窗，會出現以下畫面

 

prev8. 溫溼度感應器AM2301(DHT21)
9-1 變數next

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錯誤訊息
未知: Array and string offset access syntax with curly braces is deprecated 在檔案中的第 /include/functions.encoding.php 列 40
未知: Array and string offset access syntax with curly braces is deprecated 在檔案中的第 /include/functions.encoding.php 列 40
未知: Array and string offset access syntax with curly braces is deprecated 在檔案中的第 /include/functions.encoding.php 列 73
未知: Function get_magic_quotes_gpc() is deprecated 在檔案中的第 /class/libraries/vendor/xoops/xmf/src/Request.php 列 505
未知: Function get_magic_quotes_gpc() is deprecated 在檔案中的第 /class/libraries/vendor/xoops/xmf/src/Request.php 列 119
未知: Function get_magic_quotes_gpc() is deprecated 在檔案中的第 /class/libraries/vendor/xoops/xmf/src/Request.php 列 505
未知: Function get_magic_quotes_gpc() is deprecated 在檔案中的第 /class/libraries/vendor/xoops/xmf/src/Request.php 列 119
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通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
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通知: Undefined variable: disabled 在檔案中的第 /modules/tad_book3/function.php 列 818
通知: Undefined index: bootstrap 在檔案中的第 /modules/tadtools/preloads/core.php 列 68
已棄用
資料庫語法
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0.003775 - update tad_book3_docs set `count` = `count`+1 where tbdsn='296'
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0.000137 - select `menuid`, `itemname`, `itemurl`, `target`, `icon`, `link_cate_name`, `link_cate_sn`, `read_group` from tad_themes_menu where of_level='18' and status='1' order by position
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總計: 57
區塊
搜尋: 沒有快取
總計: 1
額外資訊
包含檔案: 204 檔案
使用記憶體: 6981720 bytes
計時
XOOPS 使用 0.118 秒來載入。
XOOPS Boot 使用 0.027 秒來載入。
Module init 使用 0.007 秒來載入。
XOOPS output init 使用 0.033 秒來載入。
Module display 使用 0.028 秒來載入。
Page rendering 使用 0.022 秒來載入。