by

|   March 14, 2008 at 4:30 AM

These work great - I recently used them for this project:

http://www.puzzlemation.com/

Very easy to interface to a PIC24F by using a ULN2803 to help sink the current.

by

|   September 21, 2009 at 5:58 PM

I'm curious, what did you use to control the matrices? Was it just shift registers? Where did you get yours?

by

|   January  6, 2010 at 3:31 AM

I used a combination of a PIC24F and a ULN2803 to sink the cathode current. All of the lines were driven by the PIC24F. More details are on the Puzzlemation web site.

by

|   October 23, 2008 at 3:02 AM

I'm waiting for a LED matrix from one month ago, but they are always out of stock. Are you going to bring some more, or must I ask some other electronic distributor?

by

|   January 31, 2009 at 9:42 AM

Hi,

I looked at the datasheet. So is that common anode for the row and common cathode for column? Thanks.

by

|   February  1, 2009 at 5:43 AM

does anybody know where to get a eagle library for this component? or a pcb design to control one or two matrixes like this one with MAX7219GNC??

by

|   February  1, 2009 at 10:42 AM

newbie question:

This 8x8 LED dot-matrix has two rows of pins. Reading the schematic, I am still confused which row of pins is for the column and which row of pins is for the row.

Looks like the column is common anode and the row is common cathode. That means to turn on an point (LED) in the matrix I apply the power (the V+) to a common anode column and GND to the common cathode row?

Thanks!

by

|   February  1, 2009 at 10:45 AM

Ah...I think I saw how to identify and the pins for the row and the pins for the column by the marks along the edges of the LED matrix.

by

|   April 24, 2009 at 1:59 AM

Check out the Puzzlemation project page linked in the first comment. Near the bottom there's a PDF file with a schematic showing how to connect it up.

by

|   May 14, 2009 at 12:14 AM

I also had trouble figuring out the connections, but I managed it in the end.

Here is a post on my blog with my findings:

http://www.glowseed.com/mindmash/?p=239

or you can skip directly to the PDF pin specification I wrote:

http://www.glowseed.com/mindmash/wp-content/uploads/2009/05/pins-led-matrix-dual-color-medium.pdf