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TV remote control motor

 

 

Introduction

In this project we will control DC motor using TV remote. We will use 70 channel Philips TV remote for this purpose. On the receiver side we will  use TSOP 1738. It works on 38 KHz.we will get signal from TV remote different code at 38Khz frequency.Then it will be decoded by microcontroller 8051. To control the motors we will use L293D IC or H bridge circuit for amplification , because output current of microcontroller is not sufficient to drive the motors. In this way we can control big machines in industry and can get précised goods. Robotics as we know is combination of electronics+software+ Mechanical. We will direactly give input from remote to microcontroller. Microocontroller default output is low.

. In this project we use two slow speed motor for running the platform of the small robot. In this project we use 89c51 microcontroller as a main processor. One connection of switches connected with microcontroller and other with ground. When we press any key then we give low signal to mircontroller.

Motor is not directly connected with the microcontroller. For the safety of the main processor we interface the motor with optocoupler circuit. Here we use pc 817 ( 4 pin opto coupler) to interface the micro controller with  the motor circuit. We use H bridge circuit with the motor. H bridge basically control the movement of the motor. With the help of this H bridge we change the direction of the motor. We use four transistor circuit with each motor. We are using four transistor circuit. Out of these four transistor  two transistor is NPN and two transistor and PNP transistor.  One NPN and One PNP provide a one direction voltage and motor moves on one direction. Second NPN and second PNP transistor again change the direction of the motor automatically.

 

 

 

 

Microcontrollor AT89C2051 and H-Bridge driver L293D were used  to control direction and speed of motor.

 


 
 
 


Fig 4.  Position of sensors,  left hand side is side view and right hand side is top view.

 

 


 

 

 

 

 

 

Planning

 

STEPS

TIME

RESPONSIBILTY

PROJECTS SELECTION

 

 

CIRCUIT AND THEORY ARRANGEMENT

 

 

CHECKING AVAILABILITY OF COMPONENTS

 

 

TESTING CIRCUIT

 

 

PCB DESIGN

 

 

COMPONENT INSERTION AND SOLDERING

 

 

TESTING

 

 

REWORK  OR TROOUBLE SHOOTING

 

 

 

                         

 

 

 

 

Components required

 

component

qty

rate

IC89C051,

 

1

60

ULN2003, 

 

1

30

Diodes in4001,

 

4

1

IC 7805

1

15

Optocoupler PC817

 

4

12

Tr548

4

3

Tr 558

4

3

Motors 12v

2

250

IC base 20 pin

1

10

Crystal 12 Mhz

1

25

Resiatncec 10k

4

.25

4k

4

.25

Cap 10µf

1

5

Connecting wires

1

20

Ir sensors

3

120

 

·        Software:-

Keil compiler or UMPS for programming

Window xp

 

 

 

 

BIBILIOGRAPHY

 

 

1. HAND BOOK OF ELECTRONICS                                                                                                            A.K. MAINI.

 

2.HAND BOOK OF ELECTRONICS                                                                                                GUPTA & KUMAR.

 

3.LET US C                                                                                                                              YASHWANT KANITKAR.

 

4.SHYAM SERIES                                                                                                                                                TATA MC GRILL.

                                                               

5.DIGITAL SYSTEMS PRINCIPLES AND APPLICATION                                                            RONALD LTOCCI.

   (Sixth addition)

 

6.ELECTRONICS FOR YOU                                                                                                                    (MARCH 1998).

 

7.DIGITAL DESIGN                                                                                                                                  MORIS MANO.

    (Second addition)

 

8.RELAYS AND ITS APPLICATION                                                                                                       SHARMA, MC.

    (Bpb-publishers)

 

9.MODERN ALL ABOUT MOTHERBOARD                                                                                              LOTHIA, M.

 (Bpb-publishers)

    

               10.POWER SUPPLY FOR ALL OCCASION                                                                                            SHARMA, MC.

  (Bpb-publishers)

 

               11.CMOS DATA BOOK (74SERIES)                                                                                                                         ECA.

                  (Bpb-publishers)

 

               12.PRACTICAL VALUE AND TRANSISTOR DATA                                                                                            POPE.  

                  (Bpb-publishers)

 

               13.PRACTICAL TRANSFORMER DESIGN HAND BOOK                                                                           LABON. E.

                    (Bpb-publishers)

     

               14 MODERN  IC                                                                                                                                MANAHAR  LOTIA.

                     (DATA AND SUBSTITUTIONAL MANUAL)

 

http://www.kmitl.ac.th/~kswichit%20/#8051

http://www.bobblick.com/techref/projects/hbridge/hbridge.html