WiFi Weather Station Nodemcu

Amhar Mohammed March 22, 2025

 Description: Collects weather data (temperature, humidity) and displays it on a web page.

Components:

  • NodeMCU (ESP8266) or ESP32

  • DHT11/DHT22 Temperature & Humidity Sensor

  • OLED Display (optional)

Circuit Diagram



(DHT11 to NodeMCU connections)

  • VCC → 3.3V

  • GND → GND

  • Data → D4

Code

#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <DHT.h>

#define DHTPIN D4
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);
ESP8266WebServer server(80);

const char* ssid = "Your_SSID";
const char* password = "Your_PASSWORD";

void handleRoot() {
  float temp = dht.readTemperature();
  float hum = dht.readHumidity();
  String page = "<html><h1>Weather Station</h1>";
  page += "<p>Temperature: " + String(temp) + "°C</p>";
  page += "<p>Humidity: " + String(hum) + "%</p></html>";
  server.send(200, "text/html", page);
}

void setup() {
  Serial.begin(115200);
  dht.begin();
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  server.on("/", handleRoot);
  server.begin();
}

void loop() {
  server.handleClient();
}


Amhar Mohammed

Posted by Amhar Mohammed

Post a Comment

0 Comments