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7 Segment display pin connection

Discussion in 'General Electronics Discussion' started by ananya, Sep 28, 2010.

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  1. ananya

    ananya

    3
    0
    Sep 28, 2010
    I got this circuit 3 phase pump water level controller from EFY website.

    [​IMG]

    I tried circuit connections in PCB and its working, fine.

    Since the pin connections from driver IC's to 7 segment LED display is not clear, as circled in red color in attached file. I did't connect the display.

    Please help me and give the pin connections from driver IC to 7 segment display.
     

    Attached Files:

  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,449
    2,809
    Jan 21, 2010
    Actually they've gone one better than providing you the pin numbers, they tell you the segments. That allows you to easily use any 7 seg display.

    The letters a through g refer to the segments. If you get a datasheet on the display it will tell you which pin corresponds to which segment.

    Wikipedia will tell you about the segments.

    If you can't find a datasheet then you can use a multimeter on a low ohms range to figure out the pinout.
     
  3. ananya

    ananya

    3
    0
    Sep 28, 2010
    [​IMG]

    In this circuit diagram pin connections of 7 segment display mentioned a,b,c,d,e,f,g are not clear to me, I need those notations clearly.
     
  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,449
    2,809
    Jan 21, 2010
    Actually they've gone one better than providing you the pin numbers, they tell you the segments. That allows you to easily use any 7 seg display.

    The letters a through g refer to the segments. If you get a datasheet on the display it will tell you which pin corresponds to which segment.

    Wikipedia will tell you about the segments.

    If you can't find a datasheet then you can use a multimeter on a low ohms range to figure out the pinout.
     
  5. ananya

    ananya

    3
    0
    Sep 28, 2010
    Yes, I do know in general the 7 segment LED pin numbers (or alphabets)

    The problem is in the circuit diagram given in the EFY website

    http://www.electronicsforu.com/efylinux/circuit/Cir29.gif

    In this circuit diagram pin connections of 7 segment display mentioned a,b,c,d,e,f,g are not clear to me, I need those notations clearly.

    So that it will be helpful.

    Thank you,

    --
    Arun Nehru
     
  6. davenn

    davenn Moderator

    13,722
    1,913
    Sep 5, 2009
    Steve has told you how to work out the pin identifications :)

    D
     
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