Comfort 13

    #include <WiFi.h>
    
    // Wi-Fi credentials
    const char* ssid = "MIT"; // Replace with your Wi-Fi SSID
    const char* password = "hy67L_w([S"; // Replace with your Wi-Fi Password
    
    #define MAX_ADC 4095
    #define GAIN (150.0 / 24.0)
    #define NTC_R25 (10.0)
    #define VCC (3.3)
    #define T0 (273.15)
    #define T25 (298.15)
    #define BETA (3750.0)
    
    const int thermistorPin = 4; // Pin connected to thermistor
    const int heatingPadPin = 3; // Pin connected to heating pad
    
    WiFiServer server(80); // Start a web server on port 80
    
    float calculateTemperature() {
        int n = 128;
        float rawValue = 0;
        for (int i = 0; i < n; i++) {
            rawValue += analogRead(thermistorPin);
        }
        rawValue /= n;
    
        float Vout = VCC * rawValue / MAX_ADC;
        float V2 = (VCC / 2.0) + (Vout / GAIN);
        float Rt = NTC_R25 * (VCC / V2 - 1);
        float TK = 1.0 / ((1.0 / T25) + log(Rt / NTC_R25) / BETA);
    
        // Back to Celsius
        return TK - T0;
    }
    
    void setup() {
        Serial.begin(115200);
        pinMode(heatingPadPin, OUTPUT); // Set heating pad pin as output
        digitalWrite(heatingPadPin, LOW); // Ensure heating pad is off initially
    
        // Connect to Wi-Fi
        Serial.print("Connecting to Wi-Fi");
        WiFi.begin(ssid, password);
        while (WiFi.status() != WL_CONNECTED) {
            delay(1000);
            Serial.print(".");
        }
        Serial.println("\nWi-Fi connected!");
        Serial.println(WiFi.localIP());
    
        server.begin(); // Start the server
    }
    
    void loop() {
        WiFiClient client = server.available();
        if (client) {
            Serial.println("New client connected");
            String request = client.readStringUntil('\r');
            Serial.println(request);
    
            // Parse request to control the heating pad
            if (request.indexOf("/heatingPad=1") != -1) {
                digitalWrite(heatingPadPin, HIGH);
            } else if (request.indexOf("/heatingPad=0") != -1) {
                digitalWrite(heatingPadPin, LOW);
            }
    
            // Check if the request is for temperature data
            if (request.indexOf("/temperature") != -1) {
                float temperature = calculateTemperature();
                client.println("HTTP/1.1 200 OK");
                client.println("Content-Type: text/plain");
                client.println("Connection: close");
                client.println();
                client.println(String(temperature));
            } else {
                // Send main HTML response
                client.println("HTTP/1.1 200 OK");
                client.println("Content-Type: text/html");
                client.println("Connection: close");
                client.println();
                client.println("<!DOCTYPE HTML>");
                client.println("<html>");
                client.println("<head>");
                client.println("<title>WARM YOUR HAND</title>");
                client.println("<style>");
                client.println("body { display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; font-family: Arial, sans-serif; background: url('background.png') no-repeat center center fixed; background-size: cover; }");
                client.println("#content { text-align: center; background: rgba(255, 255, 255, 0.8); padding: 20px; border-radius: 10px; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); }");
                client.println("#circle { width: 200px; height: 200px; border-radius: 50%; margin: 20px auto; }");
                client.println("button { padding: 10px 20px; margin: 10px; font-size: 16px; border: none; border-radius: 5px; background: linear-gradient(to bottom, #e0e0e0, #a0a0a0); color: #333; cursor: pointer; }");
                client.println("button:hover { background: linear-gradient(to bottom, #d0d0d0, #909090); }");
                client.println(".button-container { display: flex; justify-content: center; margin-top: 20px; }");
                client.println("</style>");
                client.println("</head>");
                client.println("<body>");
                client.println("<div id='content'>");
                client.println("<h1>WARM YOUR HAND</h1>");
                client.println("<div id='circle' style='background-color: blue;'></div>");
                client.println("<div class='button-container'>");
                client.println("<button onclick="fetch('/heatingPad=1')">Turn ON</button>");
                client.println("<button onclick="fetch('/heatingPad=0')">Turn OFF</button>");
                client.println("</div>");
                client.println("</div>");
                client.println("</script>");
                client.println("</body>");
                client.println("</html>");
            }
            client.stop();
            Serial.println("Client disconnected");
        }
    
        delay(100);
    }
Copy and paste the above code for your project.
Comfort 13: See Your Temperature
