Smart Thermoelectric Climate Control System Using Peltier Module and Embedded IoT Monitoring

The Smart Thermoelectric Climate Control System Using Peltier Module and Embedded IoT Monitoring is an intelligent environmental conditioning system designed to maintain desired temperature levels through automated heating, cooling, and ventilation control. The system utilizes a Peltier thermoelectric module for cooling, a glow plug for heating, and an exhaust fan for efficient heat dissipation and airflow management.

A NodeMCU (ESP8266) microcontroller acts as the central controller, continuously monitoring system parameters and controlling thermal actuators through a 2-channel relay module. The system intelligently switches between heating and cooling modes based on user-defined temperature thresholds and operating conditions.

Real-time system information, including operating mode, battery voltage, and thermal status, is displayed on an OLED display. A voltage divider circuit monitors battery health, while buck and boost converters provide stable voltage regulation for various subsystems. A buzzer generates warning alerts during abnormal conditions such as low battery voltage, overheating, or system faults.

Through embedded IoT connectivity, users can remotely monitor system status, receive notifications, and control operating modes from a mobile device or web dashboard. The system is powered using an SMPS supply and a 3.7V rechargeable battery backup, ensuring continuous operation during power interruptions.