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  1. #1
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    Two parallel 7 segment displays on OC Display card output

    I lack one display output to have enough outputs. So now I ask, is there anyone who has tried to connect two 7 segment paralel over the same output.
    These two displays shall only show zero.

    I use Open cockpit Displaycard.
    Sincerely,

    Claus


  2. #2
    500+ This must be a daytime job



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    Re: Two parallel 7 segment displays on OC Display card output

    Hi Claus,
    You should be able to connect all 6 segments together to form the zero and feed from 5v in series
    with a resistor. Using a 7 segment display is like wiring up 7 leds .
    Hope this helps, if u need any further help just let us know.
    Les

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    Re: Two parallel 7 segment displays on OC Display card output

    Not in series.

    A 7-segment display has either a common anode or common cathode. You could wire the segment pins together with a resistor, so that they're all in parallel. Choose your resistor for the total current of all the segments.

  4. #4
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    Re: Two parallel 7 segment displays on OC Display card output

    The Open Cockpit display card uses no resistors to limit the curent, ( but pulses I think ).
    I have now tryet to connect two segments parallel, and it seams to works fine.
    Sincerely,

    Claus


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