Project - 150 CONTROL DC FAN USING ESP8266 Controlling a DC fan using ESP8266, a low-cost Wi-Fi enabled microcontroller, offers a versatile and efficient solution for IoT-based home automation systems. This project designs and implements a wireless fan control system, enabling users to regulate fan speed and monitor its status remotely through a mobile application or web interface. Utilizing ESP8266's PWM capability, the fan's speed is precisely controlled. The system features automatic fan control based on temperature or humidity thresholds, real-time status monitoring, and energy efficiency through precise speed regulation. The ESP8266 connects to a Wi-Fi network, receives commands, and adjusts the fan's speed using PWM. Key advantages include convenient wireless control, energy efficiency, remote monitoring, and automation capabilities. Applications range from home automation and industrial control systems to environmental monitoring and smart buildings. The system comprises ESP8266, DC fan, power supply, and optional temperature and humiditysensors. Software components include ESP8266 firmware and mobile/web interfaces. Future enhancements include integrating voice assistants, motion sensing, scheduling features, cloud- based platforms, and machine learning algorithms for predictive fan control. This project demonstrates ESP8266's potential in revolutionizing environmental control and interaction, offering a cost-effective, efficient, and flexible solution for various applications. By leveraging IoT capabilities and wireless connectivity, the ESP8266-based DC fan control system enhances convenience, energy efficiency, and automation in diverse settings. Controlling a DC fan using ESP8266, a low-cost Wi-Fi enabled microcontroller, offers a versatile and efficient solution for IoT-based home automation systems. This project designs and implements a wireless fan control system, enabling users to regulate fan speed and monitor its status remotely through a mobile application or web interface. Utilizing ESP8266's PWM capability, the fan's speed is precisely controlled, optimizing energy efficiency and noise reduction. The system features automatic fan control based on temperature or humidity thresholds, real-time status monitoring, and customizable settings.