Modem LED Mod

TheGreatCraig · Post by **TheGreatCraig** » Fri Oct 10, 2003 11:30 am

The tutorial on DevCast doesnt work so if someone could please link me to another one that would be great. Also I remember reading somewhere before, that if you wire it to some different places it will flash like an access LED (when the system is reading something). So if someone can link me to how to do that I'd be quite happy.

Thanks.

TheGreatCraig · Post by **TheGreatCraig** » Fri Oct 10, 2003 11:49 am

Ok I Found a Modem LED Tut from here: http://www.geocities.com/dreamcastmods/main.htm

Edit: I found the access part: http://www.dcemulation.org/phpBB/viewtopic.php?t=37449

However in these ramblings I couldn't actually figure out what pin it is. Someone wanna be a "Clarica Advisor" and make sense of this for me?

Matt · Post by **Matt** » Fri Oct 10, 2003 12:54 pm

At one point I found out what it was, try searching for the original post

TheGreatCraig · Post by **TheGreatCraig** » Fri Oct 10, 2003 12:54 pm

Also. My LED's are 3.7V and the tutorial says to wire to pin 2. However, pin 2 is said (http://homepages.compuserve.de/bITmASTE ... allel.html) to be 5V. So should I wire to something like, pin 17, 18 or 19?

TheGreatCraig · Post by **TheGreatCraig** » Fri Oct 10, 2003 12:56 pm

mattthemodder wrote:At one point I found out what it was, try searching for the original post

42?

TheGreatCraig · Post by **TheGreatCraig** » Fri Oct 10, 2003 3:48 pm

And how do the pins count cause they look like this:

50------------------------------------------------2
-|--|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|--|
--|--|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|--|
49-------------------------------------------------1

So do they count in a zig-zag pattern? /\/\/\ or more like boxy? |_|-|_

Sorry for the lame ASCII diagrams.

TheGreatCraig · Post by **TheGreatCraig** » Fri Oct 10, 2003 10:15 pm

Well, Not really wanting to wait I decided to do this all myself. What I found out is,

1. The modem pins count in a zigzag pattern.
2. The pin that will give an access LED effect is #36**
3. You can wire to #2 as your power (5V) even if your LED isn't rated for that.

** The access LED has a few flaws. Firstly it will only work correctly if you close the lid and then turn the system on. If you dont the LED will come on and then stop soon after, not coming on again until the system is restarted. Also if you swap discs with the system on the LED will stop.

Matt · Post by **Matt** » Sat Oct 11, 2003 4:29 am

When I got mine to work I looked at the original post and saw a mistake, something like 2 pins up to much

Mikey1109 · Post by **Mikey1109** » Sat Oct 11, 2003 3:39 pm

that vmu led tut doesnt specify what type of resistor to use. will any work? i hope to use one i jacked out of my old tv remote.

Matt · Post by **Matt** » Sat Oct 11, 2003 3:43 pm

will any work?

As long as its the right value

Mikey1109 · Post by **Mikey1109** » Sat Oct 11, 2003 4:56 pm

i have no clue what value they are. what can i use to test it? if worse comes to worse, i can just try em out and if the led burns out, i guess its not the right one, right? thats a lil unorthodox, so do you think it would work?

TheGreatCraig · Post by **TheGreatCraig** » Sat Oct 11, 2003 5:16 pm

According to bitmaster there are some pins that run 3V. I havent tried them though.

Matt · Post by **Matt** » Sat Oct 11, 2003 5:30 pm

what can i use to test it?

Multimeter

According to bitmaster there are some pins that run 3V. I havent tried them though.

Im pretty sure Bitmaster is accurate