Developing and analyzing a versatile Thermoelectric Cooler and Heater (TEC/H) device, aiming to investigate its working principles, temperature control capabilities, and cooling/heating performance across various input voltage levels. The TEC device is driven by direct current (DC) voltages ranging from 1 V to 5 V, supplied by a DC regulator power source, and controlled using Adreno programming through the Adreno platform. The study employed commonly available components, including a breadboard, USB cable, jumper wires, and Arduino IDE's open serial monitor for data collection and monitoring. The primary objectives of this study are twofold: first, to comprehensively understand the thermoelectric principles governing the TEC/H system's operation, and second, to experimentally assess the device's ability to regulate temperature and provide both cooling and heating functions. The TEC/H system's versatility and adaptability make it a promising candidate for a wide range of applications, including electronic component cooling, environmental temperature control, and thermal management in various domains. This research may contribute to enhancing the understanding of thermoelectric technology and facilitate its implementation in practical applications, ultimately improving energy efficiency and thermal management in various fields.