This document describes a project to control the speed and direction of a DC motor using an IR remote. It contains sections on the components used, including an AT89S52 microcontroller, IR receiver, motor driver IC, relays, and DC motor. The IR remote acts as the transmitter, sending signals to the receiver connected to the microcontroller. The microcontroller reads the signals and controls the motor driver IC and relays to rotate the motor clockwise, counterclockwise, or change its speed. The project has applications in remote control and has advantages of easy control of speed and torque with a simple, cheap design.

1. DC MOTOR SPEED DIRECTION
CONTROLLING USING IR
REMOTE

2. CONTENTS
• Introduction
• Components
• Block diagram
• Receiver section
• Microcontroller Pin configuration
• AT895c1 microcontroller features
• Power supply
• Transformer
• Relays
• Dc Motors
• Applications
• Advantages
• Future Scope
• Conclusion

3. INTRODUCTION
• The project is built around an 8051 microcontroller, IR remote
and an IR receiver.
• And a DC motor will also be interfaced to the controller through
a driver IC L293D.
• IR remote acts as the transmitter in this project.
• In the remote, 4 buttons are
• being dedicated to control the motor. Now, it is the job of the
controller to read the data
• received from the receiver and to perform the predefined task of
rotating the motor
• clockwise, anticlockwise and increasing, decreasing the speed of
the dc motor.

4. BLOCK DIAGRAM
Transmitter section:
IR REMOTE

5. RECEIVER

6. COMPONENTS
HARDWARE COMPONENTS
• Micro controller : AT89S52
• Crystal : 11.0592 MHz
• LCD : HD44780
• IR receiver : TSOP 1738
• IR transmitter : Remote
• DC motor
• Driver IC : L293D
• Switches
• Relays
• Power supply
• Transformer : 12V step down
• Filter : 1000uf/25V
• Voltage Regulator : 7805
SOFTWARE
• Keil microvision
• proteus
• UC flash

7. MICROCONTROLLER
• The prime use of a microcontroller is to control the operation using a fixed
program that is stored in ROM and that does not change over the lifetime of
the system.

8. AT89C51 MICROCONTROLLER
FEATURES
• 80C51 based architecture
• 4-Kbytes of on-chip Reprogrammable Flash Memory
• 128 x 8 RAM
• Two 16-bit Timer/Counters
• Full duplex serial channel
• Boolean processor
• Four 8-bit I/O ports, 32 I/O lines
• Memory addressing capability
– 64K ROM and 64K RAM
– Power save modes:Idle and power-down

9. POWER SUPPLY

10. TRANSFORMER
• A transformer is a device that transfers electrical energy from one circuit to
another through inductively coupled conductors—the transformer's coils
Transformer symbol Transformer

11. RELAYS
• A relay is an electrically operated switch. These are remote
control electrical switches that are controlled by another
switch, such as a horn switch or a computer as in a power train
control module, devices in industries, home based
applications.

12. DC MOTORS
• The brushed DC motor is one of the earliest
motor designs. Today, it is the motor of choice
in the majority of variable speed and torque
control applications.

13. APPLICATIONS
• To control a high-voltage circuit with a low-voltage signal, as
in some types of modems,
• To control a high-current circuit with a low-current signal, as
in the starter solenoid of an automobile,
• To detect and isolate faults on transmission and distribution
lines by opening and closing circuit breakers (protection
relays).
• Normally closed contacts. When a current is passed through
the relay coil, the relay operates and opens the contacts that
carry the supply current.

14. ADVANTAGES
• Easy to understand design
• Easy to control speed
• Easy to control torque
• Simple, cheap drive design

15. FUTURE SCOPE
• The work done can be further extended in future to design a
closed loop system which could control the speed to a more
précised value and error can be easily reduced by giving
feedback signal form the sensor to the controller using the
DAQ card.
• receive the system status and information via SMS.

16. CONCLUSION
• The speed control and the direction control of
the dc motor is achieved from the wireless and
radio frequency technology with Pulse Width
Modulation and H-Bridge.
• calibration procedure, but there is still value in
having a controller that can be built with no
exotic equipment.

17. THANK YOU