It is a bldc fan controller using aurdino

1. TEMPEARTURE CONTROLLED BLDC
FAN USING ARDUINO
PRESENTED BY
19D41A0233-G.SNEHA REDDY
19D41A0235-J.NAGARAJU
19D41A0244-K.RANISHA

2. CONTENT
 ABSTRACT
 INTRODUCTION
 PROPOSED SYSTEM
 BLOCK DIAGRAM
 COMPONENTS DESCRIPTION
 CIRCUIT DIAGRAM & WORKING
 APPLICATIONS
 ADVANTAGES
 DISADVANTAGES
 FUTURE SCOPE
 CONCLUSION
 REFERENCE

3. ABSTRACT
 This project will display the configuration, development, control and
assessment of an automatic switching speed electric fans.
 The Arduino base programmed fan frame work introduced in this task is
obliged to satisfy the necessity of advances “tomorrow will be better than
today”.
 The electric fan naturally switches the speed as indicated by the
environment temperature changes.
 The heat can be minimized in various methods. One of the method is fan
implementing Arduino.

4. INTRODUCTION
 With the advancement in technology, intelligent systems are introduced
every day. Everything is getting more sophisticated and intelligible .There
is an increase in the demand of cutting edge technology and smart
electronic systems. Microcontrollers play a very important role in the
development of the smart systems as brain is given to the system.
Microcontrollers have become the heart of the new technologies that are
being introduced daily. A microcontroller is mainly a single chip
microprocessor suited for control and automation of machines and
processes. Today, microcontrollers are used in many disciplines of life for
carrying out automated tasks in a more accurate manner. Almost every
modern day device including air conditioners, power tools, toys, office
machines employ microcontrollers for their operation. Microcontroller
essentially consists of Central Processing Unit (CPU), timers and counters,
interrupts, memory, input/output ports, analog to digital converters (ADC)
on a single chip. With this single chip integrated circuit design of the
microcontroller the size of control board is reduced and power
consumption is low.

5. This project presents the design and simulation of the fan speed control
system using PWM technique based on the room temperature. A
temperature sensor has been used to measure
the temperature of the room and the speed of the fan is varied
according to the room temperature using PWM technique. The duty cycle
is varied from 0 to 100 to control the fan speed depending upon the room
temperature.

6. PROPOSED SYSTEM
 In the proposed systems, microcontroller plays a vital role in the smart
systems development. Microcontrollers have become an essential part in
the present technologies that are being presented daily. This article
discusses temperature based fan speed control and monitoring system
using an Arduino system .This system is used to control the cooling system
automatically based on the room temperature. The system uses an
Arduino board to implement a control system. Since this system is
proposed to control the cooling system and it is very important to know
Arduino controlled system well.

7. BLOCK DIAGRAM

8. COMPONENTS
ARDUINO
 The Arduino Uno is an open-source microcontroller
board based on the Microchip ATmega328P
microcontroller and developed by Arduino.cc.
 The board is equipped with sets of digital and analog
input/output (I/O) pins that may be interfaced to
various expansion boards (shields) and other circuits.

9. FEATURES OF ARDUINO BOARD
 The operating voltage is 5V.
 Digital input/output pins are 14.
 Analog i/p pins are 6.
 DC current for each input/output pin is 40mA.
 Flash Memory is 32KB.

10. BLDC FAN
 Brushless DC electric motor also known aselectronically commutated
motors.
 Brushless DC fans are usually available at three nominal voltages: 12V, 24V
and 48V.
 It has high speed 1600RPM
 Easy 2PIN connector
 Long life bearing

11. TEMPERATURE SENSOR
DHT-11
 A temperature sensor is an electronic device that measure the temperature
of its environment and converts the input data into electronic data to
record, monitor, or signal temperature changes.
 The sensor which we’ve used for this project is DHT-11.
 The DHT-11 Digital Temperature And Humidity Sensor is a basic,
ultra low-cost digital temperature and humidity sensor.
 It uses a capacitive humidity sensor and a thermistor to measure the
surrounding air and spits out a digital signal on the
data pin.

12. FEATURES OF TEMPERATURE SENSOR
 Low power consumption.
 Relative humidity and temperature measurement.
 Excellent long-term stability.
 Long distance signal transmission.
 Ultra-low power.
 Completely interchangeable.

13. CIRCUIT DIAGRAM

14. WORKING
 User-defined temperature settings can be done through Arduino board.
 As soon the max and min temperatures are set then the Arduino program
generates PWM output on the corresponding digital output according to the
measured temperature.
 The heart of the circuit is an Arduino board which controls all its functions.
 As soon as the Standard power supply of 12 volt DC is given
 The DHT-11 analog temperature device is interfaced to the analog pin of the
Arduino board.
 Arduino is built-in ADC, which converts these analog reading and displays to
indicate temperature of the device.
 When the temperature is increased then the fan starts rotating.
 The fan speed is proportional to the temperature measured.

15. APPLICATIONS
 1. Temperature based fan speed controller is useful for cooling the
processor in the laptops and personal computers “more efficiently”.
Generally fan in laptop comes with only two or three possible speeds. So it
results in more power consumption.
 2. The fan designed in this project, has different values of speed according
to temperature change. This can be also used in small scale industries for
cooling the electrical/mechanical equipment. The whole circuit except
motor and fan can be manufactured on a single PCB, and it can be used
for temperature based control operations.

16. ADVANTAGES
 This project6 can be used in Home.
 This project can be used in Industry.
 This will help in saving the energy/electricity.
 To monitor the environments that is not comfortable, or possible, for
humans to monitor, especially for extended periods of time.
 Prevents waste of energy when it’s not hot enough for a fan to be needed.
 To assist people who are disabled to adjust the fan speed automatically.

17. DISADVANTAGES
 It can only be maintained by technical person. Thus, it becomes difficult to
be maintained.
 Due to temperature variation, after sometimes its efficiency may decrease.

18. FUTURE SCOPE
 We can monitor more parameters like humidity, light and at the same time
control them.
 We can send this data to a remote location using mobile or internet.
 We can draw graphs of variations in these parameters using computer.
 When temperature exceeds the limit, a call will be dialed to the respective
given number by an automatic Dialer system.

19. CONCLUSION
 Generally electronic devices produce more heat. So this heat should be
reduced in order to protect the device. There are many ways to reduce this
heat. One way is to switch on the fan spontaneously.
 Temperature Controlled BLDC fan using Arduino can be used to control
the temperature of device, rooms, electronic components etc. by
monitoring the temperature.
 The circuitcs an be used in CPU to reduce the heat.

20. REFERENCE
 https://www.Arduino.cc/en/Main/Software
 Global Journal of Advanced Research in Electrical, Electronics and
Instrumentation Engineering.
 www.ti.com/product/DHT-11
 https://www.tinkercad.com/things/4e4gGZWcBRz-temperature-controlled-
dc-motor-using-
arduino/editel?sharecode=Gve1Eos7ZV9fIRYeOXGSnZQo2Bn3rW2xU1hfg8
wx5qc

21. Thank You