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  1. #1
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    temperature sensor project

    hi everyone im doing a project on atmel microcontroller.

    the AIM of the project is to sense the ambient temperature using lm35,digitize the data using adc0804 and then display the temperature on an LCD and when the temperature exceeds a certain threshold display the message and simultaneously activate a buzzer.

    components used are:
    lm35(temperature sensor)
    adc0804
    at89c51(microcontroller)
    lcd

    source code in 'c'

    if u have ANY information or data or useful links regarding this project please reply

    thanks in advance :)

    •   Alt17th January 2007, 06:05

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  2. #2
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    projects on lcd with temperature sensor

    For Analog to Digital Converter there are inbuilt odules for the same in many atmel microcontrollers.You can check the datasheet for that.

    tronix


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  3. #3
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    simple temperature sensor project

    Give this a look... I know, I know it is PIC based but it might help...
    http://www.technology.niagarac.on.ca...atureAlarm.htm


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  4. #4
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    temperature sensor projects components used

    Salam!
    I think that you should use PIC or AVR for this project since they have built in ADC's as compared to 8051.

    If you decide to use PIC or AVR then it is very easy to read the temperature from LM35 and display it on an LCD.

    I have got the codes for both PIC and AVR so feel free to ask for help.

    Check the availability of these controllers in ur home country since they are easily available here in Pakistan.

    ***** hafiz.


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    •   Alt17th January 2007, 11:59

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  5. #5
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    mazidi temperature sensor

    hi
    i hope it can help u
    thank

    buntheun


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  6. #6
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    project book on temp sensor

    Quote Originally Posted by kiranmayik
    hi everyone im doing a project on atmel microcontroller.

    the AIM of the project is to sense the ambient temperature using lm35,digitize the data using adc0804 and then display the temperature on an LCD and when the temperature exceeds a certain threshold display the message and simultaneously activate a buzzer.

    components used are:
    lm35(temperature sensor)
    adc0804
    at89c51(microcontroller)
    lcd

    source code in 'c'

    if u have ANY information or data or useful links regarding this project please reply

    thanks in advance :)

    currently for adc initialize.. using keil

    // Project: Analog to Digital Converter


    #include <REG51.H>

    sbit RD1 = P3^7;
    sbit WR1 = P3^6;
    sbit INTR = P3^5;
    sbit led = P0^7;


    // Decision for Turn ON LED

    void decision (unsigned char range1)
    {
    if (range1 > 0x40)
    {
    led = 1;
    }
    else
    led = 0;
    }


    //Main Program for Reading ADC

    void main ()
    {
    unsigned char value;
    P1 = 0xFF; // Initialize
    P0 = 0xFF;
    INTR = 1;
    RD1 = 1;
    WR1 = 0;

    while (1)
    {
    WR1 = 0; // Start Conversion
    WR1 = 1; // Low-to-High
    while (INTR == 1);
    RD1 = 0; // Start Read Data
    value = P1; // Read Data from ADC
    RD1 = 1; // End Read Data
    P2 = value; // Display at Port 2
    decision (value); // Decision Making
    }
    }


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    •   Alt25th January 2007, 10:17

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  7. #7
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    atmel temperature sensor adc tos



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  8. #8
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    project temperature sensor with display

    thanks bro



  9. #9
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    temperature sensor project:help needed!

    see this, interfacing LM35 with ADC0804 and parallel port. Use the same code logic
    h**p://booksbybibin.14.forumer.com/viewtopic.php?t=63
    LCD With parallel port
    h**p://booksbybibin.14.forumer.com/viewtopic.php?t=60

    Bibin John
    www.bibinjohn.tk


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  10. #10
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    temperature sensor project:help needed!

    helo...please refer to this book

    The 8051 microcontroller and embedded systems : using Assembly and C / Muhammad Ali Mazidi, Janice Gillispie Mazidi, Rolin D. McKinlay

    all example program and theory about your project available in this book....


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  11. #11
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    Re: temperature sensor project:help needed!

    hi

    The best solution for your problem is the Bood written by M. ali mazidi. it is the best book with alots of examples in assembly and c. there is a good topic on temperature senser using atmel 89c51 and ADC 08xxx.


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  12. #12
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    Re: temperature sensor project:help needed!

    Quote Originally Posted by kiranmayik
    hi everyone im doing a project on atmel microcontroller.

    the AIM of the project is to sense the ambient temperature using lm35,digitize the data using adc0804 and then display the temperature on an LCD and when the temperature exceeds a certain threshold display the message and simultaneously activate a buzzer.

    components used are:
    lm35(temperature sensor)
    adc0804
    at89c51(microcontroller)
    lcd

    source code in 'c'

    if u have ANY information or data or useful links regarding this project please reply

    thanks in advance :)



    •   Alt13th December 2007, 12:28

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  13. #13
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    Re: temperature sensor project:help needed!

    thanks for all informations

    Added after 48 minutes:

    thanks alot and you need a/d



  14. #14
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    Re: temperature sensor project:help needed!

    check this out, use's a pic and basic without any external ADC
    http://users.tpg.com.au/gramo/Site/lm35dz.htm



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