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Need help with 7 digit LED display pins description

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zohaib

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hello
i have a 7digit (seven segment) led display where can i find its pin description it has 28 pins and only 039h is written on its back side it also has 4 leds down to digits.should i check it by giving it voltage supply?
thanks
 

Re: 7 digit led display

thanks for your reply
but the one i have is itself a seven segment 7digit display module and not the ic
 

Re: 7 digit led display

ok .sorry for dat

Added after 3 minutes:

zohaib said:
hello
i have a 7digit (seven segment) led display where can i find its pin description it has 28 pins and only 039h is written on its back side it also has 4 leds down to digits.should i check it by giving it voltage supply?
thanks
Click to expand...


How many digits do u have.........is it seven or four
 

    Z

    zohaib

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Re: 7 digit led display

buddy this is 7digit module and i need to know its pin description
 

7 digit led display

Sounds like a custom display from something. The cheap and cheerful way to test LEDs is a simple 1.5V battery and mapping out what segment lights with which pin.
 

    Z

    zohaib

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Re: 7 digit led display

Many possible combinations, good luck and lots of patience needed :)

Can you make a picture of it?

Or if it's coming out of something, like blueroomelectronics suggested, can't you figure something out using the original PCB?
 

    Z

    zohaib

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Re: 7 digit led display

Hi Zohaib,
make a picture of your 7 segment display and share it, maybe I can help you with pin descript,
regards
 

    Z

    zohaib

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7 digit led display

use 5V with a 470 ohm resistor in series, touch each pair of pin and you can found out the segment to pin relation easily.
 

    Z

    zohaib

    Points: 2
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Re: 7 digit led display

thank you all
i have solved the problem by manually checking it you all helped me thanks
 

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