#include #include #include #include #include #include const char* ssid = "Tute"; const char* password = "877855524"; #define ONE_WIRE_BUS 4 OneWire oneWire(ONE_WIRE_BUS); DallasTemperature sensors(&oneWire); LiquidCrystal_I2C lcd(0x27, 16, 2); #define BUZZER_PIN 25 WebServer server(80); float temperatureC = 0; struct TempRange { String name; float minTemp; float maxTemp; }; TempRange items[] = { {"Human Body", 36.1, 37.2}, {"Room", 20.0, 26.0}, {"Drinking Water", 10.0, 25.0}, {"Cold Drink", 1.0, 5.0}, {"Milk Storage", 1.0, 4.0}, {"Refrigerator", 2.0, 5.0}, {"Fish Tank", 22.0, 28.0}, {"Greenhouse", 18.0, 30.0}, {"Server Room", 18.0, 24.0} }; const int ITEM_COUNT = sizeof(items) / sizeof(items[0]); int selectedItem = 1; // Default Room String statusText = "NORMAL"; void updateAlarm() { float minT = items[selectedItem].minTemp; float maxT = items[selectedItem].maxTemp; if (temperatureC > maxT) { statusText = "OVERHEAT ALERT"; digitalWrite(BUZZER_PIN, HIGH); } else if (temperatureC < minT) { statusText = "LOW TEMP ALERT"; digitalWrite(BUZZER_PIN, HIGH); } else { statusText = "NORMAL"; digitalWrite(BUZZER_PIN, LOW); } } String webpage() { String color = "#4CAF50"; if(statusText == "OVERHEAT ALERT") color = "#F44336"; if(statusText == "LOW TEMP ALERT") color = "#2196F3"; String page; page += ""; page += ""; page += ""; page += ""; page += "ThermoGuard"; page += ""; page += ""; page += "

"; page += "

🌡 ThermoGuard

"; page += "

"; page += String(temperatureC,1); page += " °C"; page += "

"; page += "

"; page += statusText; page += "

"; page += "

Selected Material

"; page += "