Mirko Pavleski
Published © GPL3+

DIY ESP8266 Wireless Web Weather station

Super simple wireless weather station with only three elements. You can see results on web.

BeginnerFull instructions provided1 hour2,457
DIY ESP8266 Wireless Web Weather station

Things used in this project

Hardware components

NodeMCU ESP8266 Breakout Board
NodeMCU ESP8266 Breakout Board
×1
DHT11 Temperature & Humidity Sensor (4 pins)
DHT11 Temperature & Humidity Sensor (4 pins)
×1
BMP180 Atmospheric pressure sensor board
×1

Software apps and online services

Arduino IDE
Arduino IDE

Hand tools and fabrication machines

Breadboard, 270 Pin
Breadboard, 270 Pin

Story

Read more

Schematics

Schematic

Code

Code

C/C++
#include <ESP8266WiFi.h>
#include "DHT.h"
#include <SFE_BMP180.h>
#include <Wire.h>
 
#define ALTITUDE 700.0
#define DHTPIN 0     // what digital pin we're connected to
#define DHTTYPE DHT11   // DHT 11
 
SFE_BMP180 pressure;
DHT dht(DHTPIN, DHTTYPE);
const char* ssid     = "SSID"; // Your ssid
const char* password = "Pass"; // Your Password
 
char status;
double T,P,p0,a;
WiFiServer server(80);

void setup() {
Serial.begin(115200);
delay(100);
dht.begin();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
 
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
 
Serial.println("");
Serial.println("WiFi is connected");
server.begin();
Serial.println("Server started");
 
 
Serial.println(WiFi.localIP());
  if (pressure.begin())
    Serial.println("BMP180 init success");
  else
  {
    Serial.println("BMP180 init fail\n\n");
    while(1); // Pause forever.
  }
  delay(1000);
}
 
void loop() {

  char status;
  double T, P, p0; //Creating variables for temp, pressure and relative pressure

  Serial.print("You provided altitude: ");
  Serial.print(ALTITUDE, 0);
  Serial.println(" meters");

  status = pressure.startTemperature();
  if (status != 0) {
    delay(status);

    status = pressure.getTemperature(T);
    if (status != 0) {
      Serial.print("Temp: ");
      Serial.print(T, 1);
      Serial.println(" deg C");

      status = pressure.startPressure(3);

      if (status != 0) {
        delay(status);

        status = pressure.getPressure(P, T);
        if (status != 0) {
          Serial.print("Pressure measurement: ");
          Serial.print(P);
          Serial.println(" hPa (Pressure measured using temperature)");

          p0 = pressure.sealevel(P, ALTITUDE);
          Serial.print("Relative (sea-level) pressure: ");
          Serial.print(p0);
          Serial.println(" hPa, ");
        }
      }
    }
  }  
 
float h = dht.readHumidity();
// Read temperature as Celsius (the default)
float t = dht.readTemperature();
// Read temperature as Fahrenheit (isFahrenheit = true)
float f = dht.readTemperature(true);
  
WiFiClient client = server.available();
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close");  // the connection will be closed after completion of the response
client.println("Refresh: 10");  // update the page after 10 sec
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html>");
client.println("<style>html { font-family: Cairo; display: block; margin: 0px auto; text-align: center;color: #333333; background-color: #ccffb3;}");
client.println("body{margin-top: 50px;}");
client.println("h1 {margin: 50px auto 30px; font-size: 50px; text-align: center;}");
client.println(".side_adjust{display: inline-block;vertical-align: middle;position: relative;}");
client.println(".text1{font-weight: 180; padding-left: 15px; font-size: 50px; width: 170px; text-align: left; color: #3498db;}");
client.println(".data1{font-weight: 180; padding-left: 80px; font-size: 50px;color: #3498db;}");
client.println(".text2{font-weight: 180; font-size: 50px; width: 170px; text-align: left; color: #ff6600;}");
client.println(".data2{font-weight: 180; padding-left: 150px; font-size: 50px;color: #ff6600;}");
client.println(".text3{font-weight: 180; padding-left: 15px; font-size: 50px; width: 170px; text-align: left; color: #0066ff;}");
client.println(".data3{font-weight: 180; padding-left: 80px; font-size: 50px;color: #0066ff;}");
client.println(".data{padding: 10px;}");
client.println("</style>");
client.println("</head>");
client.println("<body>");
client.println("<div id=\"webpage\">");   
client.println("<h1>ESP Weather Station server</h1>");
client.println("<div class=\"data\">");
client.println("<div class=\"side_adjust text1\">Humidity:</div>");
client.println("<div class=\"side_adjust data1\">");
client.print(h);
client.println("<div class=\"side_adjust text1\">%</div>");
client.println("</div>");
client.println("<div class=\"data\">");
client.println("<div class=\"side_adjust text2\">Temperature:</div>");
client.println("<div class=\"side_adjust data2\">");
client.print(t);
client.println("<div class=\"side_adjust text2\">*C</div>");
client.print(f);
client.println("<div class=\"side_adjust text2\">F</div>");
client.println("</div>");
client.println("<div class=\"data\">");
client.println("<div class=\"side_adjust text3\">Pressure:</div>");
client.println("<div class=\"side_adjust data3\">");
client.print(p0,2);
client.println("<div class=\"side_adjust text3\">hPa</div>");
client.println("</div>");
client.println("</div>");
client.println("</body>");
client.println("</html>");
 delay(4000);
    }

Credits

Mirko Pavleski
177 projects • 1413 followers
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Related channels and tags
  • Espressif
  • NodeMCU