Monday 8 August 2011

Temperature Controlled Fan Using Micro controller 8051/8052 ( C Program)

I have recently made a temperature controlled DC fan whose speed increases with the rise in temperature and decrease as the temperature falls !  It has got a lot of practical usage as it  does not require to manually operated and it turns off as the temperature falls below a certain threshold ! and the temperatures on which you want to change the speed or turn off the fan are completely user defined !!
The components required are:
1.AT89S51/AT89S52
2.ADC0804
3.LM35
4.L293D


LM 35:
            Temperature sensor whose output voltage varies with the change in the temperature. The output voltage increases by 10mV  for 1 degree rise in temperature.


ADC 0804:
              It is an analogue to digital converter who converts the provided analogue signal into corresponding digital signal. It uses the provided reference voltage to provide digital output from analogue input.



AT89S52:
              It is an ATMEL 8 bit microcontroller with 8kb of programmable flash memory. Its operating voltage range is from 4v to 5.5 v.it has 32 programmable I/O lines.

L293D:
       It is a current driver used for the purpose of driving motors.it has four inputs and four outputs. If the voltage at input 1 and input 2 is same then the motor connected between output2 will not run. If input 1 is greater than input 2 then the motor will move in the direction opposite to the direction in the case when input 2 is greater than input 1.

WORKING:
                     The circuit works on the feedback principle. The speed of the fan varies with the variation in the temperature. The speed of the fan increases if the temperature is increased and the speed of the fan decreases with the decrease in the temperature.

LM35 produces its output voltage corresponding to the temperature. The temperature is given to ADC0804 who converts the analogue variation in the voltage into the digital form. When the Vref  is properly selected (1V in this case)  then the temperature value appears on the  output pins of the ADC 0804 in the binary form. This output is given as input to the port 1 of the 8052 microcontroller. The input is compared in the microcontroller and the required output is produced.

SPEED CONTROLLER:
                                                To control the speed of the fan a PWM (pulse width modulation) is used
.
PWM (PULSE WIDTH MODULATION):
                                    
  In pulse width modulation the power delivered to the load is varied by changing the duty cycle of the output voltage.
1. To deliver high power duty cycle is kept high
2. To deliver less power duty cycle is kept low




Normal case:


Pulse Width Modulation:

High and Low duty cycle signals.
HERE is the circuit diagram !




1
       

IF YOU WANT THE CODE JUST TELL ME IN AN EMAIL !

632 comments:

  1. I need a code for this project(temperature controlled fan), I will look forward to ypur response on fallingstar_nomi@yahoo.com.
    thanks

    ReplyDelete
  2. i have mailed you the code !

    ReplyDelete
    Replies
    1. can you give me the code for this project for pic microcontroller.

      Delete
    2. Could you send me the code for the fan control?
      Thank you
      Info@softproducts.net

      Delete
    3. could you please email me too.. i really need the codes.. thanks a lot in advance.. sic_magg0t_rdm@yahoo.com..

      Delete
    4. omar please send me the code in c for the self automated fan ...... your thesis about this is very good...:)

      Delete
    5. my email address is.......
      sunshine.tamannab6@gmail.com

      Delete
    6. hey...pls can you send me the code on my email??
      ==>Mahmoudkassem_92@hotmail.com<==

      Delete
    7. can u plz send me the code for this.... my emai: vjkpallod69@gmail.com

      Delete
  3. Email me to
    d3ck1n6@gmail.com :)
    Thanks

    ReplyDelete
  4. please mail me the code to vinaymoh@gmail.com.
    thanks.

    ReplyDelete
  5. PLEASE MAIL ME THE CODE NABILASAYIDI@YAHOO.COM
    THANK YOU

    ReplyDelete
  6. please mail me the the code please
    skatalites.987@gmail.com
    thank you

    ReplyDelete
  7. Please email me the code also please. dare1942@hotmail.com Thanks a lot
    =)

    ReplyDelete
  8. please mail me the code please
    bubster_ice@yahoo.com
    thank you... :)

    ReplyDelete
  9. Hi Maxi, i am very interested with the code. please send me the code at rabago.israel007@gmail.com. Thank you!

    ReplyDelete
  10. please send me the code my id is
    ambuerayil@gmail.com

    ReplyDelete
  11. it would very helpful of you to send me the code of this project....i m having lot of problems with it...mail me at pvgreenblood@gmail.com...thank u

    ReplyDelete
  12. send me the code for this project to
    skimmer04@yahoo.com

    ReplyDelete
  13. i wud be very thankful if u send me the codes
    plz send it to sengavail717@gmail.com

    ReplyDelete
  14. I got a project on this topic,so I would be very thankful if you mail the code to me on "sengavail717@gmail.com"

    ReplyDelete
  15. hi,could you email me this code please?
    send to ruanemeng@eircom.net
    thanks

    ReplyDelete
  16. i need the code for this topic..... please send me the code to meenakshicc21@gmail.com..... thank you...

    ReplyDelete
  17. please send me the code..at
    peeyushpashine@gmail.com

    ReplyDelete
  18. please help me.i need this code.
    send me at rah_goswami@ymail.com

    ReplyDelete
  19. i need a coding of dis project plz mail me... At gcsrahul@gmail.com

    ReplyDelete
  20. hi,will u plz mail me code of this project (if u hv code in "c" then plz send me c code).i will b thankful 2 u]..AT....rahulpareek185@gmail.com

    ReplyDelete
  21. need help in codin.....mail at akanksha7991@gmail.com

    ReplyDelete
  22. i need a code kindly send me at eehafiz90@yahoo.com

    ReplyDelete
  23. i also nee a code in c language for variable induction motor speed control for 8051 i already completed hardware design but i am not be happy with programing kindly help me for any information you can mail me eehafiz90@yahoo.com

    ReplyDelete
  24. i need the coding part of it!..please mail it to me!...rest circuit is done..and u using dc motor or stepper motor out here???..pl mail the code at
    akanksha7991@yahoo.com

    ReplyDelete
  25. please i'd appreciate if i could get the code and clearer circuit diagram pls send to dayuscraven@yahoo.com

    ReplyDelete
  26. Plz send me code on manoj.wakdikar89@gmail.com i need it urgently. plz, thank you.

    ReplyDelete
  27. Maxi, I need the code on emergency.plz mail me at loveforever.shimul@gmail.com

    if you have some necessary clue abt this project then also send me.plz.....

    ReplyDelete
  28. maxi, kindly mail me the at t.akhtar10@gmail.com.. waiting for your reply.. :)

    ReplyDelete
  29. This comment has been removed by the author.

    ReplyDelete
  30. its emergency.plz send the code at loveforever.shimul@gmail.com

    AT89S51/AT89S52 both r almost same?in ur post u told abt AT89S52 but in circuit diagram its showing AT89S51 what u have really used?plz reply...

    ReplyDelete
  31. What kind of fan are you using?? Could you give the name of it?? I need a fan for my project.

    ReplyDelete
  32. plz send the code at loveforever.shimul@gmail.com

    i an in trouble

    ReplyDelete
  33. Maxi, please send the code at loveforever.shimul@gmail.com

    plz i need the code.

    ReplyDelete
  34. Thanks.Which software you have used in code writing.And one thing microcontroller AT89S51 or AT89S52 ?

    ReplyDelete
  35. i used uvision keil for programming ! and the project works fine on both 51 and 52 .

    ReplyDelete
  36. I need coding of automatic street light using micro controller. send me in adnan_1526@yahoo.com

    ReplyDelete
  37. I need coding of automatic street light using micro controller.
    send me in adnan_1526@yahoo.com

    Plz as soon as possible.

    ReplyDelete
  38. need coding of automatic street On-off light using micro controller.
    send me in adnan_1526@yahoo.com

    ReplyDelete
  39. Sir, can you send me the coding of LDR along with circuit diagram.
    I will look forward to ypur response on engr-adnan99@gmail.com

    ReplyDelete
  40. Sir, can you send me the coding of LDR sensor code along with circuit diagram.
    I will look forward to ypur response on engr-adnan99@gmail.com

    ReplyDelete
  41. Please send me the code for 'AUTOMATIC STREET LIGHT' and its pin configuration. Also mention which micro-controller I should use. My e-mail address is engr-adnan99@gmail.com

    ReplyDelete
  42. please mail us the code on following address :

    t.akhtar10@gmail.com

    we have started working on the project and are stuck right now!!, kindly respond as soon as possible pleaasseeeee... :)

    ReplyDelete
  43. please mail me at sajid.ahmad7@gmail.com

    ReplyDelete
  44. can you send me the code ??
    here is my email add..
    joannaleonardo@yahoo.com
    thank you.. godbless..

    ReplyDelete
  45. Replies
    1. plz send me that codo too.....plzzzzz
      my id umereagle@hotmail.com

      Delete
    2. I need the code.ill lookforward for your reply at nikitakhamkar.1990@gmail.com
      plz mail me as soon as possible

      Delete
  46. please mail me the code at sushma_edu@yahoo.co.in
    Thank u so much

    ReplyDelete
  47. please mail me the code at gokul.lovingheart@gmail.com
    Thank you

    ReplyDelete
  48. can you send me the code please at baqai1992@hotmail.com

    ReplyDelete
  49. please mail me code at allah.mypower@hotmail.com

    ReplyDelete
  50. pls mail the code immediately very urgent..my id is 21gowrish@gmail.com pls

    ReplyDelete
  51. please mail me the code too....g.jayvee@gmail.com

    ReplyDelete
  52. please send me the code of this project at umereagle@hotmail.com

    ReplyDelete
  53. Replies
    1. Yes I would appreciate if you emailed the code to me. You can email it at armandobargas54@yahoo.com
      Thank you

      Delete
  54. plz mail me coding for this project and isis professional simulation also mail id is syedabuthahir.m@gmail.com

    ReplyDelete
  55. plz can u email me the code for temperature controlled fan and the schematic diagram at kellynelson49@yahoo.com

    ReplyDelete
  56. can i get the code for this projects @ chinas4lords@yahoo.com
    thanks

    ReplyDelete
  57. hi dude i want code for this , my email id is vaibhav9623277686@gmail.com

    ReplyDelete
  58. hi... pls email me the code n diagram... hontuck_16@hotmail.com
    thanks

    ReplyDelete
  59. hi, i'm currently doing this project. may I ask for the code of this diagram? I'm also using At8952 but my temperature sensor is not LM35, it is DS1820. Do you think it will still function the same? my email is emc.clemente@yahoo.com

    ReplyDelete
  60. codes and answers has been mailed !

    ReplyDelete
  61. hi maxi,cud u email me d code?

    ReplyDelete
  62. culshane@gmail.com

    ReplyDelete
  63. email me the code
    kidtriffer44@yahoo.com

    ReplyDelete
  64. plz mail me the code for this project.my emailid is garg.vishal27@gmail.com

    ReplyDelete
  65. plz plz plz mail me the code sir..
    vishnu_vn009@yahoo.com

    ReplyDelete
  66. hi, can u e-mail me the code and the diagram for this project? manueljoseph20@gmail.com

    Thank u so much in advance. :D

    ReplyDelete
  67. hey frnd please mail me the code for temp controlled fan on kushwahkapilsingh@gmail.com...

    i will be vry mch thankful 2 u...

    ReplyDelete
  68. hello, can u e-mail me the code and the diagram for this project? sum102689@hotmail.com

    Thank u so much!

    ReplyDelete
  69. Replies
    1. Please mail me the code-sidh447@gmail.com

      Regards
      Sidharth

      Delete
  70. myself ashish thomas i am working on this project
    wil you plz send me the code at
    ashishthomas525@yahoo.com

    ReplyDelete
  71. ashish thomas : its very imp. plzz mail me

    ReplyDelete
  72. hello. can you send me this project codes?
    jamaijazz@hotmail.com
    thank you

    ReplyDelete
  73. ashish thomas : thanks for mailing me

    ReplyDelete
  74. jamaijazz: thank you

    ReplyDelete
  75. Maxi,could you please mail me the code for this project?It's a very interesting project.Thanx in advance.
    Also do you have the code for DC Motor Speed Control using 89s52 microcontroller.Could you please mail me that too?? My email id is:
    corking_psy@yahoo.co.in

    ReplyDelete
  76. Please E-mail me your code. i do hope it is in C

    joubertjm22@gmail.com

    ReplyDelete
  77. please send me the codes as soon as possible ... it will be really helpful ... my id is poojasingh241191@gmail.com

    ReplyDelete
  78. Please send me code of this project

    ReplyDelete
  79. please send the code to me.my email is alex088794@yahoo.com.hk

    ReplyDelete
  80. pls send the code to me. me email is opal_20@rocketmail.com

    ReplyDelete
  81. Hi Can you please provide me the source code for this project.

    Will be eagerly waiting for you.

    Regards.
    Nitin

    ReplyDelete
  82. My mail id is nitinco0l01@gmail.com.

    please provide me the source code ASAP.

    Thanks,

    ReplyDelete
  83. sorry its nitincool01@gmail.com

    ReplyDelete
  84. Plese send me code on this address awaisk68@yahoo.com

    ReplyDelete
  85. pls send me hex file. my email opal_20@rocketmail.com

    ReplyDelete
  86. please mail the code to komalpraneeth@gmail.com
    thanks a lot in advance

    ReplyDelete
  87. pls send the code to anu.cool17@gmail.com

    ReplyDelete
  88. please send me the code to rdeepak03@gmail.com

    ReplyDelete
  89. can u plz send me the specifications of components used and the code also
    my email id is:
    borsesnehal@gmail.com

    ReplyDelete
  90. we are working on desginging a temperature controlled fan with automatic and manual modes using atmega8-16bu. Could someone please help us with the coding?
    We need it urgently. Thanks a lot for any help that you could provide


    rrsssteam: http://www.teknovates.com

    ReplyDelete
    Replies
    1. we are working on desginging a temperature controlled fan with automatic and manual modes using atmega8-16bu. Could someone please help us with the coding?
      We need it urgently. Thanks a lot for any help that you could provide
      iitd.indra@gmail.com

      Delete
  91. thanx for code

    ReplyDelete
  92. could you please sent me the code..
    vishnu.vn.vn@gmail.com

    ReplyDelete
  93. could please email me the code too, jian_lu1793@hotmail.com

    ReplyDelete
  94. omar please send me the code in c for the self automated fan ...... your thesis about this is very good...:)
    my email address is.....
    sunshine.tamannab6@gmail.com

    ReplyDelete
  95. thank you omar....
    can you please send me the circuit diagram of temperature controlled fan......

    ReplyDelete
  96. because there are so many things which i could not understood in that diagram which u have provided in your blog.....
    so please can you help me......:)

    ReplyDelete
  97. We are working a project.

    Can you please send me the circuit diagram, circuit diagram need to use this software "EAGLE 5.11.0" to draw out .

    Then give me all component specifications (including resistor, capacitor, etc)

    And then write a fan-motor speed control program for the microcontroller by using the principles of PWM using dc Micro controller 8051.

    The microcontroller circuit should also provide an input device which allows turning the motor ON and OFF, and selection of dc motor running at 50%, 75% and 100% of rated speeds.


    My Email address is ctk19911010@yahoo.com.hk

    ReplyDelete
  98. Maxi,could you please tell me more about the X2 crystal you have used in the circuit(specifications). Also could you mail me the hex-code for this particular program? My e-mail id is saikatsanyals@yahoo.com.Thanx a lot in advance!

    ReplyDelete
  99. Sorry, I cannot open the file "temp fan”, can you please send me again, it’s the file format can use “pdf” or “sch”.

    Thanks for you help!

    My Email address is ctk19911010@yahoo.com.hk

    ReplyDelete
  100. Hi,please can you mail me temperature controlled fan code..
    My email address is soumyakilledar@gmail.com

    ReplyDelete
  101. can you send the code , my mail id is manikandan764@gmail.com

    ReplyDelete
  102. lpawankumar.kumar@gmail.com;tis is my mail id pls send me the code :)

    ReplyDelete
  103. Hello, can you please tell me what kind of crystal I should use?

    ReplyDelete
  104. use crystal of 11.0592MHz .

    ReplyDelete
    Replies
    1. Thanks a lot Omair :D

      Delete
    2. Can u please e mail the codes for the above project.......
      Will be very grateful.....
      Email id is : abdul_samad5052@yahoo.com
      Will appreciate if its done ASAP!!

      Delete
  105. hi..i got the code but its in c language....can u give me the code in assembly language...
    plz do send it m in dire need of it..
    thank u

    ReplyDelete
  106. my email id is kushwahkapilsingh@gmail.com...
    pls send me the code in assembly language..
    asap..
    thank u

    ReplyDelete
  107. The ckt diagram's perfect. appreciate ur work. But plz send the code of this project . . my email id is nyk.magic@gmail.com . . thanks

    ReplyDelete
  108. can u give me the script code to my mail

    radimas.dhawniel@gmail.com

    ReplyDelete
  109. please give me the code of this project ...on my email id- jaryan78@gmail.com

    ReplyDelete
  110. please send me d code.....my email-id is abhi.f2514@gmail.com

    ReplyDelete
  111. Maxi what type of crystal(specifications) should I buy for this particular project? Also could you mail me the assembly code for this particular program? Thanking you in advance.My e-mail id is preetampic@gmail.com

    ReplyDelete
  112. I need the code too.
    ill look forward for your reply at nikitakhamkar.1990@gmail.com
    plz mail me as soon as possible.thanx

    ReplyDelete
  113. i want that code for my final year project. please send me the code as soon as possible

    ReplyDelete
  114. my email address is rakeshmallik07@gmail.com

    ReplyDelete
  115. Hi....
    I need code in c of this temperature controller in c
    Mail me on
    gauravnaik15@mail.com

    thanx
    :)

    ReplyDelete
  116. can you pls mail me the circuit and code for 8051 based temperature controlled fan.email id is shilpithakur116@gmail.com

    ReplyDelete
  117. Can you please mail me the code?? jjdharini@gmail.com

    ReplyDelete
  118. Please tell the code for this temperature controlled dc fan till 5 pm today. Its very urgent. thanking you...
    My email id is-> s.glovesn.n@gmail.com

    ReplyDelete
  119. Please tell the code for this temperature controlled dc fan till 5 pm today. Its very urgent. thanking you...
    My email id is-> s.glovesn.n@gmail.com

    ReplyDelete
  120. can you pls mail me this code..wanted to do this for my proj..pls mail asap!! please..mail id: gayathriram.92@gmail.com

    ReplyDelete
  121. can your sent the information and document to me!my e-mail address: ipoh85@hotmail.com

    ReplyDelete
  122. Maxi,can you provide me a reliable circuit for AT89s52/51 flash programmer.It is very urgent and most of the circuits available online are not reliable at all.I'm in urgent need of a burner circuit to complete this project of yours.Thanks in advance.
    My e-mail id is das.sourajyoti@gmail.com

    ReplyDelete
  123. Can u please snd me d code as soon as possible to my id...
    loklokesh24@gmail.com
    I vl b highly obligd if u vl send me asap...

    ReplyDelete
  124. Can u please e mail the codes for the above project.......
    Will be very grateful.....
    Email id is : abdul_samad5052@yahoo.com
    Will appreciate if its done ASAP!!

    ReplyDelete
  125. Please send me the code of temperature controlling system(ie the above project),thanks in advance.Please mail it to sumedh.datar@gmail.com

    ReplyDelete
  126. hey budddy can u mail me the code for dis project my mail id is meetharsh90@gmail.com

    ReplyDelete
  127. can you send me the code on manender1091@gmail.com

    ReplyDelete
  128. Maxi can you please specify where should I connect the Pin 2 & Pin 7 of Motor Driver L293D to?Connecting Pin 7 to ground is not making the circuit work.Please your help is urgently required as I've made this circuit for my project and am required to submit it next week.My e-mail id is corking_psy@yahoo.co.in

    ReplyDelete
  129. please send me the code and complete information about circuit diagram at this email;
    salman.ahmad771@gmail.com

    ReplyDelete
  130. please send me the code and complete information about circuit diagram at this email
    mdfareezfauzi@ymail.com

    ReplyDelete
  131. I need the code and complete information of the circuit asap. Please email it to me at farwanaqvi220@gmail.com

    Thanks

    ReplyDelete
  132. I would also like to see the c code and the circuit diagram. I am very interested in reading your implementation. Please reply to zidingir@gmail.com

    Thanks in advance and keep up the good work.

    ReplyDelete
  133. Hi i also want c code could you email me at salman_458@yahoo.com????

    ReplyDelete
  134. would you please send me the C-code on my e-mail
    { luaysherif@yahoo.com }

    ReplyDelete
  135. Hi. Great project. Can you send me the C code because it will help in my project. And this is my email (flayer_shah@yahoo.com). It will be nice if you can send it asap. Thank you.

    ReplyDelete
  136. Hey what is the crystal frequency? And what is the RV1?

    ReplyDelete
  137. Please mail the code sir,,mu_gen@ymail.com.
    Thank You very much.

    ReplyDelete
  138. I want its C Language code . .. its urgent cuz i am having a bit problem in interfacing the components.....
    my email ids are:
    tyson79610@gmail.com

    ReplyDelete
  139. plz mail me asm code for AT89S51
    n specification of components,n total cast of the project
    what is RV1 in diagram?
    my id is

    karode24@gmail.com

    ReplyDelete
  140. plz send me the code as i have to submit this next week as my project i shall be very thankful to you
    tayyab8456@gmail.com

    ReplyDelete
  141. Can you please tell me what is RV1 in the circuit and for what voltage range ll it work? I made the same circuit diagram using proteus and it didnt work. Please mail me at farwanaqvi220@gmail.com

    ReplyDelete
    Replies
    1. RV1 is the potentiometer and it is used for the purpose of adjusting the Vref. and ADC is designed for max 5V

      Delete
  142. I have mailed u the working simulation file of proteus if it does not work then there is a problem in your hex file!

    ReplyDelete
  143. I need the code please will be greatful thanks .
    tariqmuhib01@gmail.com

    ReplyDelete
  144. hey can i have the code at
    zeerox92@yahoo.com

    ReplyDelete
  145. can I have the code?
    ana.pcorona@gmail.com

    ReplyDelete
  146. email me with the code bruno.aleixo.gana@gmail.com

    ReplyDelete
  147. plz send me code at vekariyaamit@ymail.com

    ReplyDelete
  148. This comment has been removed by the author.

    ReplyDelete
  149. omair Maxi..I'd be very thanful if you could send me the code of this project. I'm doing this project now...fahmi1198s@gmail.com

    ReplyDelete
  150. PLZ.......can you please send me the code at arifshuaib@yahoo.com......
    plzzzzzzzzzzzz....
    BEST reagrds.

    ReplyDelete
  151. send me code of temperature controlled fan using 8051 micro controller.....
    my email id is
    raobt91@gmail.com

    ReplyDelete
  152. sir am doing a projct like temperature controlled fan, using 89s52, can send me tha c program sir, my email vysaghvenugopal@gmail.com

    ReplyDelete
  153. Sir i too require code please mail at nikey2012@yahoo.com
    thanx in advance

    ReplyDelete
  154. Dear Sir,
    Nice project.Will you send me code to understand for generation of 3ph pwm signal.
    Regards & Thanks
    Vinay Parmar
    Baroda 390010
    Gujarat India
    Ph:+919427352904
    email:goldendollar@rediffmail.com

    ReplyDelete
  155. sir Maxi, what type of crystal(specifications) should I buy for this particular project? Also could you mail me the assembly code for this particular program? Thanking you in advance.My e-mail is fahmi_1198s@yahoo.com

    ReplyDelete
  156. hi maxi, plz can u send mi the code and proteus design file to me... i will be very thankful to u for this help...

    AMAR MORE
    as_more01@yahoo.co.in

    ReplyDelete
  157. Maxi, please send the code at ripud38@gmail.com

    plz i need the code.

    ReplyDelete
  158. hii... can u send me d code.. I will be very thankful to u for this help...
    adi.dev7076@gmail.com

    ReplyDelete
  159. please send me the code with this address
    mesueth@yahoo.com
    or
    mesueth@gmail.com

    ReplyDelete
  160. I want to make temperature controller range -99 to 99 degree celcius using microcontroller 89c51 please send me coding details

    ReplyDelete
  161. please send code on email sunppa@gmail.com

    ReplyDelete
  162. please send me code on ashaydesai10@gmail.com

    ReplyDelete
  163. please mail me the code on ashwin.maikonda@gmail.com

    ReplyDelete
  164. please mail me the code on ashwin.maikonda@gmail.com

    ReplyDelete
  165. Could you send me the code for the fan control? please,,
    abdunfaqir003@gmail.com

    ReplyDelete
  166. Please send code!
    My email id
    param_now@yahoo.com

    ReplyDelete
  167. plz send the c code 2 renuka_chelat@yahoo.co.in

    ReplyDelete
  168. Im doing my 3rd yr B.E. Can i do this as my mini project? if i can , how to proceed?

    ReplyDelete
    Replies
    1. Yes you can do it as your mini project! First i will recommend you to learn the basics of 8051(in case u are using it first time) and the learn about ADC0804. then their interfacing. you can find much of this in this post

      Delete
  169. pls send me d code in c!!!here's my email id: anjali_angelx@yahoo.co.in

    ReplyDelete
  170. please send me the codes 4 this project (preferably in c).this is my email id: anjali_angelx@yahoo.co.in

    ReplyDelete
  171. Please send to priyaalwayskool@gmail.com
    Thank you!!

    ReplyDelete