Arduino 記事本 09 : DHT11溫濕度感知模組
網頁筆記本-009 Arduino 記事本 09 : DHT11溫濕度感知模組 原廠網頁：https://learn.adafruit.com/dht/overview LIB下載網頁：https://learn.adafruit.com/dht/downloads 下載兩個LIB資料 Arduino library and example code for DHT sensors Adafruit_Sensor library (required by the DHT library above) 下載回來解壓縮後將資料夾放入：Arduino\libraries\位置下 [Adafruit_Sensor-master] [ DHT-sensor-library-master] 重啟 Arduino，可於範例程式中找到DHTtester的程式範例 DHT11溫濕度感知模組 // 刪去註解 #include "DHT.h" #define DHTPIN 2 // 選擇Arduino輸入接腳 #define DHTTYPE DHT11 // DHT 11 , 選擇選用的感知器 //#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321 //#define DHTTYPE DHT21 // DHT 21 (AM2301) DHT dht(DHTPIN, DHTTYPE); void setup() { Serial.begin(9600); Serial.println("DHTxx test!"); dht.begin(); } void loop() { delay(2000); float h = dht.readHumidity(); float t = dht.readTemperature(); float f = dht.readTemperature(true); if (isnan(h) || isnan(t) || isnan(f)) { Serial.println("Failed to read from DHT sensor!&qu