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Electronics => Projects, Designs, and Technical Stuff => Topic started by: daisizhou on October 05, 2024, 02:32:37 am

Title: What type of 4-digit digital LED display module is this?
Post by: daisizhou on October 05, 2024, 02:32:37 am

Hallo everyone

I found an interesting electronic tool on the Internet, please watch the video
https://www.youtube.com/watch?v=dgKWwZJ4T0w (https://www.youtube.com/watch?v=dgKWwZJ4T0w)

https://www.youtube.com/watch?v=EVUCU91rpAk&t=12s (https://www.youtube.com/watch?v=EVUCU91rpAk&t=12s)

I was lucky enough to find its schematic diagram, but when I read the circuit schematic diagram, I found that U7 is a display module, but it does not have a standard specific chip model.
It looks like a 4-digit digital tube integrated module. I have never seen such a module.
If anyone knows it please tell me, thanks

Title: Re: What type of 8-digit digital LED display module is this?
Post by: PCB.Wiz on October 05, 2024, 03:02:50 am

Your title says 8 digit but your question is about 4 digit ?  :-//
You may want to edit the title.

4 Digit LED modules are quite common in Asia, this link shows many choices for '4 places' from 0.26" to 0.8" with 0.56" the most common,

https://www.lcsc.com/products/LED-Segment-Displays_532.html (https://www.lcsc.com/products/LED-Segment-Displays_532.html)

Title: Re: What type of 4-digit digital LED display module is this?
Post by: daisizhou on October 05, 2024, 03:47:11 am

Thanks. I fixed the error.

Please see the picture, this is 4 LED display modules that can display 8-bit digital tubes.
But in the schematic diagram, please see U7, its pin definition is different from the common digital tube.
I don't know why this is

And I didn't find any LED module in the schematic diagram. It seems that U7 is an interface or display module integration, and U7 does not show the specific model.

Title: Re: What type of 4-digit digital LED display module is this?
Post by: floobydust on October 05, 2024, 04:38:33 am

This is the closest I could find, but no part number. "Youngsun"
Or Lite-On LTC-4727 (https://optoelectronics.liteon.com/upload/download/DS30-2000-193/C4727JR.pdf) same pinout

Title: Re: What type of 4-digit digital LED display module is this?
Post by: daisizhou on October 05, 2024, 05:05:23 am

Thanks .It really looks like :-+