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NodeMcu—DHT11

材料：NodeMcu，DHT11模块(三线)，杜邦线三根(母对母)。

软件：Arduino(配置好ESP环境)。

arduino库：ESP8266，DHT sensor library

连线：+ 3.3v，- GND，DAT D3

#include 
   
    #include "DHT.h"#define DHTPIN 0     // D3引脚#define DHTTYPE DHT11   // 传感器类型DHT11long lastMsg = 0;float temp = 0.0;float hum = 0.0;float diff = 1.0;DHT dht(DHTPIN, DHTTYPE);void setup() {
     Serial.begin(115200);  dht.begin();}void loop() {
       long now = millis();  	if (now - lastMsg > 3000) {
       	Serial.print("3s发送数据");    	// Wait a few seconds between measurements    	lastMsg = now;    	float newTemp = dht.readTemperature();    	Serial.print(newTemp);    	Serial.print("\n");    	float newHum = dht.readHumidity();    	Serial.print(newHum);    	Serial.print("\n");  	}}
   

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