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Author Topic: 1024D switch led panel documentation  (Read 773 times)
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Hi,<br /><br />I have a broken DLink &quot;<a href='http://www.dlink.com/products/?pid=75' class='bbc_url' title='External link' rel='nofollow external'>DES 1024D</a>&quot; network switch. I would like to toy with the leds component (on the left side of the switch), but I can't find any documentation on this. Here's some picture of the &quot;thing&quot;.<br /><br />I would be happy if someone can help me on this.


* WP_000071.jpg (1106.87 KB, 2592x1944 - viewed 4 times.)

* WP_000072.jpg (788 KB, 2592x1944 - viewed 6 times.)
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Each of those HC164 shift registers has 8 outputs.  There are 6 of them so 48 outputs.  Each of the three LED modules has 16 LEDs.  So that's 48 LED's.  I would guess taht the outputs of the HC164's go direct to individual LEDs.

The power and ground lines should be easy to spot.  Each HC164 will have an input line, a shift line, and a latch line.  There will be between 1 and 6 data lines in that wire and between 1 and 6 shift clock lines and between 1 and 6 latch lines.  Find the pinout for the HC164 chip and find out what control pins are connected to what wires.
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Ok, I'll investigate this way.
Thank you !
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