5 x 7 Matrix Display

Dan Taylor

Hi,
I have a·8 x·8 and 5 x 7 LED matrix display and was wondering if any of you have a circuit showing the connection. Or usual connection. Or something.
I have the 8 x 8 one like the one shown it says something about the connection but I am not sure what it means: http://www.elexp.com/opt_2aeg.htm
And the 5 x 7 is this one: http://www.elexp.com/srp_71as.htm



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Dan Taylor

Franklin

The spec sheet on the site shows you which pins connect where. take 5v and a 330ohm resistor and touch different pins. you will get the idea quick enough.

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- Stephen

T&E Engineer

I have some of these already. If you look closely there is a link to the SPEC SHEET:

http://www.elexp.com/a_data/08fym12882aeg.pdf

Attached are some drawings showing them connected in an array for a project I did.

Dan Taylor

Oh My!

I can't believe I didn't see that spec sheet for the 8x8 one!

Thanks I'll just try what Franklin said I'm sure the 5x7 will work.

Thanks!

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Dan Taylor

Brian218

Hi Dan,

Are you, (or anyone else) still looking for the specs on the various LED matrix displays?

I've been tinkering with some 8 X 8 and 5 x 7 displays recently, and after a lot of frustration, I finally figured them out. (I also just placed an order for fifty displays..I want to eventually cover at least one wall with them sometime in the future)
Keep in mind that there are several variants for the displays, such as common cathode, common anode, bipolar etc.

I ended up making an Excel spread sheet, then testing each pin against all the other pins, and recorded the results in the spreadsheet grids. This works great for making custom characters, especially if you leave enough room on the grids to record additional data.

Although they aren't hard to program with a MCU, They can be a little bit tricky if your not familiar with them

If anyone wants a copy of when I get home tonight, I'll try to post an attachment with all the relevant info...

Dan Taylor

Hey,
That's a great idea! Mine is a bi-color 5 x 7.
Copies would be great!

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Dan Taylor

Forrest

Brian218,

Yes, please post your LED Display info. I have some Lite-On 8 x 8 single color display's from All Electronics that I haven't been able to find the data sheets. Thanks

Forrest

Brian218

Here's the 8 X 8 and 5 X 7 matrixes. Each square represents a LED, the "L and H" refer to high and low while the numbers represent the matrix pins that will illuminate that matrix LED.

Example: 8 X 8 matrix.
The top, leftmost led has 13L 8H. This LED will turn on when pin 13 is made negative and pin 8 is made positive.
The view is from the top looking down. I thought I would have a little more time, AND I'M HAVING TROUBLE UPLOADING THIS FILE!!!! but I'll try to post more info this weekend. Here is a quick and dirty cut and past.




5 X 7 C 1 C 2 C 3 C 4 C 5
ROW 1 13L 8H 13L 7H 13L 3H 13L 14H 13L 2H
ROW 2 10L 8H 10L 7H 10L 3H 10L 14H 10L 2H
ROW 3 15L 8H 15L 7H 15L 3H 15L 14H 15L 2H
ROW 4 9L 8H 9L 7H 9L 3H 9L 14H 9L 2H
ROW 5 4L 8H 4L 7H 4L 3H 4L 14H 4L 2H
ROW 6 16L 8H 16L 7H 16L 3H 16L 14H 16L 2H
ROW 7 6L 8H 6L 7H 6L 3H 6L 14H 6L 2H




8 X 8 COL 1 COL 2 COL 3 COL 4 COL 5 COL 6 COL 7 COL 8
ROW 1 13L 8H 13L 7H 13L 3H 13L 14H 13L 2H 13L 12H 13L 11H 13L 5H
ROW 2 10L 8H 10L 7H 10L 3H 10L 14H 10L 2H 10L 12H 10L 11H 10L 5H
ROW 3 15L 8H 15L 7H 15L 3H 15L 14H 15L 2H 15L 12H 15L 11H 15L 5H
ROW 4 9L 8H 9L 7H 9L 3H 9L 14H 9L 2H 9L 12H 9L 11H 9L 5H
ROW 5 4L 8H 4L 7H 4L 3H 4L 14H 4L 2H 4L 12H 4L 11H 4L 5H
ROW 6 16L 8H 16L 7H 16L 3H 16L 14H 16L 2H 16L 12H 16L 11H 16L 5H
ROW 7 6L 8H 6L 7H 6L 3H 6L 14H 6L 2H 6L 12H 6L 11H 6L 5H
ROW 8 1L 8H 1 L 7H 1 L 3 H 1L 14H 1 L 2H 1L 12H 1L 11H 1L 5H