Automatic Fan Speed Controller Using Temperature

This research presents the design and implementation of an Automatic Fan Speed Controller using a temperature-sensing and microcontroller-based control system. The primary objective is to regulate fan speed automatically according to real-time temperature variations, thereby improving cooling efficiency and reducing unnecessary power consumption. The system employs a temperature sensor to monitor ambient heat levels and a microcontroller to process the data and generate corresponding PWM signals for speed control. As the temperature increases, the controller proportionally adjusts the fan speed to maintain stable thermal conditions. This approach ensures silent operation at lower temperatures and optimal cooling during higher thermal loads. The proposed system offers a cost-effective, reliable, and energy-efficient alternative to conventional manual fan regulators. Its simplicity, accuracy, and adaptability make it suitable for various applications, including electronic devices, industrial equipment, and household cooling systems, where effective thermal management is essential.