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esp8266(nodemcu) +DHT11温湿传感器

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发表于 2019-7-12 10:25:08 | 显示全部楼层 |阅读模式 来自 甘肃
DHT11+WEB版我们先看看效果

将DHT11的数据通过web服务器反馈过来。
开发思路
我们首先要安装两个库DHT和Adafruit Unified Sensor
  1. #include <ESP8266WiFi.h>
  2. #include <ESP8266WebServer.h>
  3. #include "DHT.h"

  5. // Uncomment one of the lines below for whatever DHT sensor type you're using!
  6. #define DHTTYPE DHT11   // DHT 11
  7. //#define DHTTYPE DHT21   // DHT 21 (AM2301)
  8. //#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

  10. /*Put your SSID & Password*/
  11. const char* ssid = "kali";  // Enter SSID here
  12. const char* password = "12345678900";  //Enter Password here

  14. ESP8266WebServer server(80);

  16. // DHT Sensor
  17. uint8_t DHTPin = D4;
  18.                
  19. // Initialize DHT sensor.
  20. DHT dht(DHTPin, DHTTYPE);               

  22. float Temperature;
  23. float Humidity;

  25. void setup() {
  26.   Serial.begin(115200);
  27.   delay(100);
  28.   
  29.   pinMode(DHTPin, INPUT);

  31.   dht.begin();              

  33.   Serial.println("Connecting to ");
  34.   Serial.println(ssid);

  36.   //connect to your local wi-fi network
  37.   WiFi.begin(ssid, password);

  39.   //check wi-fi is connected to wi-fi network
  40.   while (WiFi.status() != WL_CONNECTED) {
  41.   delay(1000);
  42.   Serial.print(".");
  43.   }
  44.   Serial.println("");
  45.   Serial.println("WiFi connected..!");
  46.   Serial.print("Got IP: ");  Serial.println(WiFi.localIP());

  48.   server.on("/", handle_OnConnect);
  49.   server.onNotFound(handle_NotFound);

  51.   server.begin();
  52.   Serial.println("HTTP server started");

  54. }
  55. void loop() {
  56.   
  57.   server.handleClient();
  58.   
  59. }

  61. void handle_OnConnect() {

  63. Temperature = dht.readTemperature(); // Gets the values of the temperature
  64.   Humidity = dht.readHumidity(); // Gets the values of the humidity
  65.   server.send(200, "text/html", SendHTML(Temperature,Humidity));
  66. }

  68. void handle_NotFound(){
  69.   server.send(404, "text/plain", "Not found");
  70. }

  72. String SendHTML(float Temperaturestat,float Humiditystat){
  73.   String ptr = "<!DOCTYPE html> <html>\n";
  74.   ptr +="<head> <meta name="viewport" content="width=device-width,  initial-scale=1.0, user-scalable=no">\n";
  75.   ptr +="<link href="https://fonts.googleapis.com/css?family=Open+Sans:300,400,600" rel="stylesheet">\n";
  76.   ptr +="<meta charset="UTF-8">\n";
  77.   ptr +="<title>Priess的小窝—智能温湿计</title>\n";
  78.   ptr +="<style>html { font-family: 'Open Sans', sans-serif; display: block; margin: 0px auto; text-align: center;color: #333333;}\n";
  79.   ptr +="body{margin-top: 50px;}\n";
  80.   ptr +="h1 {margin: 50px auto 30px;}\n";
  81.   ptr +=" .wd {margin: 50px auto 30px;width: auto;color: #f39c12}\n";
  82.   ptr +=" .wd1 {margin: 50px auto 30px;width: auto;color: #3498db}\n";
  83.   ptr +=".side-by-side{display: inline-block;vertical-align: middle;position: relative;}\n";
  84.   ptr +=".humidity-icon{background-color: #3498db;width: 30px;height: 30px;border-radius: 50%;line-height: 36px;}\n";
  85.   ptr +=".humidity-text{font-weight: 600;padding-left: 15px;font-size: 19px;width: 160px;text-align: left;}\n";
  86.   ptr +=".humidity{font-weight: 300;font-size: 60px;color: #3498db;}\n";
  87.   ptr +=".temperature-icon{background-color: #f39c12;width: 30px;height: 30px;border-radius: 50%;line-height: 40px;}\n";
  88.   ptr +=".temperature-text{font-weight: 600;padding-left: 15px;font-size: 19px;width: 160px;text-align: left;}\n";
  89.   ptr +=".temperature{font-weight: 300;font-size: 60px;color: #f39c12;}\n";
  90.   ptr +=".superscript{font-size: 17px;font-weight: 600;position: absolute;right: -20px;top: 15px;}\n";
  91.   ptr +=".data{padding: 10px;}\n";
  92.   ptr +="</style>\n";
  93.   ptr +="</head>\n";
  94.   ptr +="<body>\n";
  95.   
  96.    ptr +="<div id="webpage">\n";
  97.    
  98.    ptr +="<h1>室内温室检测系统</h1>\n";
  99.    ptr +="<div class="data">\n";
  100.    ptr +="<div class="side-by-side temperature-icon">\n";
  101.    ptr +="<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"\n";
  102.    ptr +="width="9.915px" height="22px" viewBox="0 0 9.915 22" enable-background="new 0 0 9.915 22" xml:space="preserve">\n";
  103.    ptr +="<path fill="#FFFFFF" d="M3.498,0.53c0.377-0.331,0.877-0.501,1.374-0.527C5.697-0.04,6.522,0.421,6.924,1.142\n";
  104.    ptr +="c0.237,0.399,0.315,0.871,0.311,1.33C7.229,5.856,7.245,9.24,7.227,12.625c1.019,0.539,1.855,1.424,2.301,2.491\n";
  105.    ptr +="c0.491,1.163,0.518,2.514,0.062,3.693c-0.414,1.102-1.24,2.038-2.276,2.594c-1.056,0.583-2.331,0.743-3.501,0.463\n";
  106.    ptr +="c-1.417-0.323-2.659-1.314-3.3-2.617C0.014,18.26-0.115,17.104,0.1,16.022c0.296-1.443,1.274-2.717,2.58-3.394\n";
  107.    ptr +="c0.013-3.44,0-6.881,0.007-10.322C2.674,1.634,2.974,0.955,3.498,0.53z"/>\n";
  108.    ptr +="</svg>\n";
  109.    ptr +="</div>\n";
  110.    ptr +="<div class="side-by-side temperature-text">室内温度：</div>\n";
  111.    ptr +="<div class="side-by-side temperature">";
  112.    ptr +=(int)Temperaturestat;
  113.    ptr +="<span class="superscript">°C</span></div>\n";
  114.    ptr +="</div>\n";
  115.    ptr +="<div class="data">\n";
  116.    ptr +="<div class="side-by-side humidity-icon">\n";
  117.    ptr +="<svg version="1.1" id="Layer_2" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"\n"; width="12px" height="17.955px" viewBox="0 0 13 17.955" enable-background="new 0 0 13 17.955" xml:space="preserve">\n";
  118.    ptr +="<path fill="#FFFFFF" d="M1.819,6.217C3.139,4.064,6.5,0,6.5,0s3.363,4.064,4.681,6.217c1.793,2.926,2.133,5.05,1.571,7.057\n";
  119.    ptr +="c-0.438,1.574-2.264,4.681-6.252,4.681c-3.988,0-5.813-3.107-6.252-4.681C-0.313,11.267,0.026,9.143,1.819,6.217"></path>\n";
  120.    ptr +="</svg>\n";
  121.    ptr +="</div>\n";
  122.    ptr +="<div class="side-by-side humidity-text">室内湿度：</div>\n";
  123.    ptr +="<div class="side-by-side humidity">";
  124.    ptr +=(int)Humiditystat;
  125.    ptr +="<span class="superscript">%</span></div>\n";
  126.    ptr +="</div>\n";
  127.    //定义温度变量，并且赋值，用于逻辑判断。
  128.     int wd = Temperaturestat ;
  129.      
  130.    if (wd>=30){
  131.     ptr +="<div class="wd">Hi~ 宝贝今天天气贼热，注入防暑哦！</div>\n";
  132.    }
  133.    if (29>=wd&&wd>20){
  134.     ptr +="<div class="wd1">Hi~ 宝贝今天天气不错吆，尽情的玩耍吧！</div>\n";
  135.    }
  136.    if (wd<10){
  137.     ptr +="<div class="side-by-side humidity-text">Hi~ 宝贝今天天气比较冷，多穿点衣服，小心着凉！</div>\n";
  138.    }
  139.   ptr +="</div>\n";
  140.   ptr +="</body>\n";
  141.   ptr +="</html>\n";
  142.   return ptr;
复制代码



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发表于 2022-7-3 10:36:59 | 显示全部楼层 来自 陕西咸阳
大佬，这个帖子在微信公众号或者别的地方有吗？这上面的图片看不到了
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