+ Post New Thread
Results 1 to 4 of 4
  1. #1
    Newbie level 6
    Points: 1,121, Level: 7

    Join Date
    Aug 2008
    Posts
    13
    Helped
    0 / 0
    Points
    1,121
    Level
    7

    interfacing LM35 to 89c51 microcontroller show temp 7segment

    Hi.

    interfacing LM35 to 89c51 microcontroller show temp 7segment
    In my application i have to sense temperature by using LM35 with ADC 0804 show the temp 7 segment.

    The temperature sensor i have choosen is LM35. I want to know how it can be interfaced to 89c51 microcontroller.

    Please give me an idea.

    with regards,
    raghunath.

    •   Alt24th February 2011, 09:46

      advertising

        
       

  2. #2
    Full Member level 5
    Points: 5,101, Level: 16

    Join Date
    Mar 2006
    Posts
    309
    Helped
    43 / 43
    Points
    5,101
    Level
    16

    Re: interfacing LM35 to 89c51 microcontroller show temp 7segment

    hi

    interface the lm35 to 0804.then control the 0804 with 8051,display the readings in 7 segment.just do google. you will get plenty of examples.

    ml



    •   Alt24th February 2011, 09:52

      advertising

        
       

  3. #3
    Full Member level 5
    Points: 2,306, Level: 11

    Join Date
    Nov 2010
    Location
    Hubli(INDIA)
    Posts
    247
    Helped
    41 / 41
    Points
    2,306
    Level
    11

    Re: interfacing LM35 to 89c51 microcontroller show temp 7segment

    LM35 is the temperature sensor which will give the reading in the analog form you need to convert it in to digital form using analog to digital converter(ADC) and connect the output of the ADC to 8051 controller pin, and read the readings directly and display the result on the seven segment display...
    YOUR EMBEDDED PARTNER



    •   Alt24th February 2011, 10:23

      advertising

        
       

  4. #4
    Advanced Member level 3
    Points: 5,456, Level: 17

    Join Date
    Jun 2009
    Location
    India
    Posts
    759
    Helped
    144 / 144
    Points
    5,456
    Level
    17

    Re: interfacing LM35 to 89c51 microcontroller show temp 7segment

    If LM35 is used to give 10mV per degree, this may need preamplifier like LM324 to increase the signal to a level suitable for the ADC used. The digital output can then be displayed on LED display. This may involve issues like BCD conversion, decoding from BCD to seven segment.



+ Post New Thread
Please login