Controlling Fan Speed Using Room Temperature

Abstract: Conventional fan speed control systems are typically limited by manual adjustments or simplistic on/off switching based on basic temperature thresholds. This project falls within the domain of intelligent embedded systems for environmental control, specifically focusing on automated fan speed regulation using temperature sensors. It utilizes a DHT11 sensor for real-time temperature monitoring, an Arduino microcontroller for data processing, and an LCD display to provide continuous user feedback. Traditional fan control systems typically rely on manual adjustments or simple on/off switching based on fixed temperature thresholds, leading to energy inefficiency and inconsistent comfort. To address these issues, the proposed system dynamically adjusts fan speed using Pulse Width Modulation (PWM), allowing smooth and proportional control in response to ambient temperature changes. This automated approach eliminates manual intervention, enhances energy efficiency, and improves user comfort. The system has demonstrated an accuracy of 90.47%, marking a significant advancement in intelligent climate control for domestic and small-scale industrial applications, and laying the groundwork for future IoT-based home automation solutions.

Keywords: Automated Fan Control, Temperature Sensor (DHT11), Arduino, Pulse Width Modulation (PWM), Energy Efficiency