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1. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering Temperature Based Automatic Fan Speed Control System using Arduino Presented by: Bhuvaneshwari P - 4VM21EC014 Arya Kumar AM - 4VM21EC010 VG Deena Dechamma - 4VM21EC035 Under the Guidance of Dr. Rajalakshmi M C

2. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering Contents Introduction objectives Literature Survey Problem Statement Methodology Components Expected Outcom e Reference

3. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering Introduction We have created a temperature-based automatic fan velocity monitoring system. Conventionally, the fans have to be turned on and off physically according to the temperature. Also, the fan’s speed has to be monitored manually depending on the temperature variations. We have built an automatic temperature sensor-based fan speed controller. The temperature sensor will sense the temperature, and if the temperature increases beyond a certain limit, the fan will automatically turn on. The fan will turn off automatically if the temperature decreases below certain limit.

4. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering Objective of the project Automatically adjust the fan speed according to the temperature changes detected by a sensors. Save energy by reducing fan speed when the temperature is low and increasing it only when necessary. Prevent overheating of electronic components or machinery by ensuring adequate cooling at higher temperatures.

5. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering Sl. No. Title, Author, Year Summary Limitation /Gaps 1 Temperature Based Automatic Fan Speed Control System using Arduino Ashima Jain*, Arup Sarkar*, Danish Ather *, Dharm Raj* 2022 This paper presents a temperature-based fan speed control system using an Arduino. The system uses a DHT11 sensor to measure temperature, automatically adjusting the fan speed based on the detected temperature. If the temperature exceeds a certain threshold, the fan turns on; if it falls below, the fan turns off. The fan speed varies with temperature changes, and both the current temperature and fan speed are displayed on an LCD screen. This design aims to enhance comfort and efficiency in modern living environments. A limitation of this paper is that it relies solely on the DHT11 sensor, which may not provide highly accurate temperature readings, potentially affecting the precision of fan speed regulation. Additionally, the system’s reliance on predefined temperature thresholds might not account for individual comfort preferences or sudden environmental changes. 2 Automatic Temperature Based Fan Speed Controller Using Arduino Shivshankar Adsule1, Shivani Mohite2, Rahul Patil3,Prof. Namrata R. Dhawas 2020 This project describes an automatic fan speed controller that uses an Arduino board to adjust the fan’s speed based on room temperature. By utilizing embedded technology, it achieves efficient and reliable closed-loop feedback control. The Arduino board, chosen for its advanced capabilities, receives temperature data and adjusts the fan speed according to a predefined program that compares the current and set temperatures. A limitation of this paper is that it does not address potential inaccuracies in temperature measurement or how the system handles rapid temperature fluctuations. Additionally, it does not consider the integration of user preferences or the ability to manually override the automatic settings.

6. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering Sl. No. Title, Author, Year Summary Limitation /Gaps 3 TEMPERATURE BASED FAN SPEED CONTROLLER AND MONITORING WITH ARDUINO Nikhil Asware *1, Shashank Ahire *2, Chinmay Kadam *3, Omkar Wadne *4 2023 “Temperature Based Fan Controller And Monitoring With Arduino” describes a standalone system that automatically adjusts fan speed based on temperature. Utilizing embedded technology and a closed-loop feedback-control system, it ensures efficient and reliable operation. The project is compact, requiring minimal components, and is suitable for applications like air-conditioners and ovens. Temperature and fan speed are displayed on an LCD panel, with the primary goal of saving energy. A limitation of this paper is that it does not address potential challenges in maintaining accurate temperature readings or handling sudden temperature changes. Additionally, it lacks consideration for user customization or manual control options, which may limit its adaptability in different settings. 4 TEMPERATURE CONTROLLED FAN USING ARDUINOB.L.TANMAI,K.RISHITHA2,M.V.S.S.PRATYUSHA3,SK.KHAMURUNNISA4,M.PADMA 2020 This project describes a standalone automatic fan speed controller using embedded technology, specifically an Arduino microcontroller. The system adjusts fan speed based on temperature sensed by an LM35 sensor. It aims to save energy by optimizing fan operation in various applications such as air-conditioners, heaters, and industrial processes like boiler temperature control. The compact design and efficient control make it suitable for diverse thermal management tasks. The project’s reliance on a regulated 9V, 1A power supply might limit its scalability in industrial settings where higher power demands are common. Additionally, while suitable for basic fan control applications, its effectiveness in highly demanding or precise temperature control environments may be constrained by the LM35 sensor’s accuracy and the Arduino microcontroller’s processing capabilities. Further, its integration with complex industrial systems or compatibility with different types of fans and environments could pose challenges.

7. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering PROBLEM STATEMENT Design and develop an automatic fan speed control system that adjusts the speed of a fan based on the ambient temperature .

8. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering METHODOLOGY A temperature-based automatic fan speed control system has been created using Arduino UNO Microcontroller for programming. The board is connected to the computer via a USB (Universal Serial Bus). Arduino board will transform the input i.e., the temperature from the sensor into output i.e., monitoring the fan speed. If the temperature surpasses a pre-defined value, the fan will automatically switch on and will turn off automatically if the temperature falls below a specified value. The fan’s velocity will be determined by the temperature, and it will automatically increase or decrease according to the temperature variations as measured or sensed by the temperature sensor.

9. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering COMPONENTS Arduino UNO LCD display DHT11 Temperature and Humidity Sensor Fan Bread board Jumper wires

10. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering Arduino IDE version 1.8.16 has been used for writing the code for setting up the Arduino board and controlling the fan speed according to temperature variations. The DHT11 temperature and humidity sensor have been used for sensing the temperature in Celsius. The Arduino UNO microcontroller board will take the input from this temperature detector and will adjust the fan velocity as per the temperature changes The sensed temperature are printed on the LCD.

11. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering   CIRCUIT DIAGRAM

12. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering   EXPECTED OUTCOME This method may be utilized in the home as well as in the workplace. The system is operating well, and the design is appropriate for modern needs and technology. The temperature is detected by the temperature and humidity sensor (DHT11). The fan speed and the temperature are shown on the LCD. At low temperatures, it will save energy by slowing down the fan’s pace Use and implementation, cheap cost, low power consumption,

13. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering   REFERENCES [1] Bhatia, V., & Bhatia, G. (2013). Room temperature based fan speed control system using pulse width modulation technique. International Journal of Computer Applications, 81(5). [2] Jung, W.,You , J. and Won, S. (2008). Temperature Monitoring System for Inductive Heater Oven (pp.1734-1737), International Conference on Control, Automation and Systems, Seoul Korea. [3]. K.A Akpado1, C.O Ezeagwu2, A. Ejiofor3, A.O N wokeke.Vol . 2, Issue 7, July 2013, Modeling and Simulation of a Microcontroller Based Temperature Control in a Ventilation System. [4]. J. Breckling , Ed., The Analysis of Directional Time Series: Applications to Wind Speed and Direction, ser.Lecture Notes in Statistics. Berlin, Germany: Springer, 1989, vol. 61.

14. VIDYA VIKAS INSTITUTE OF ENGINEERING & TECHNOLOGY Department of Electronics & Communication Engineering