Topic: Use Ti Calculator Graph-link As Lite-on Key Extractor (Read 81 times)

quadomatic · « **on:** August 03, 2009, 05:42:00 PM »

I popped open my TI graph-link (for TI 83+ and that stuff). I heard it was a RS232 <-> TTL converter, so I figured I could use it as a key extractor for my Lite-On drive.

(IMG:http://farm4.static.flickr.com/3556/3787056910_5e95a606dd_b.jpg)

The jack appears to split into power, ground and data. I need to remove the jack and figure out which is which. Any clues?

Any advice on this would help.

Thanks

quadomatic · « **Reply #1 on:** August 04, 2009, 12:17:00 AM »

Okay, so I'm not sure I really understand how this jack is oriented.

I guessed that the jack was:

first - power
middle - data
last - ground

I tried various combinations to test the cable with a battery to see if I could get data in hyperterminal. None worked, and when I tried putting what I thought was ground into the 5V molex connector of my PC, I got a spark and the cable got real hot, so I figured I had just closed the circuit.

Any help?

Fox9p3400 · « **Reply #2 on:** August 04, 2009, 02:01:00 PM »

Could you get the name of the chip? Just read off all the stuff from it. If there's gunk covering it then use Isopropyl Alcohol (91%) and a Q-tip to remove that. The data sheet tells all... Does the cable still work with your calculator? You might have fried it.

quadomatic · « **Reply #3 on:** August 04, 2009, 02:43:00 PM »

QUOTE(Fox9p3400 @ Aug 4 2009, 03:01 PM)

Could you get the name of the chip? Just read off all the stuff from it. If there's gunk covering it then use Isopropyl Alcohol (91%) and a Q-tip to remove that. The data sheet tells all... Does the cable still work with your calculator? You might have fried it.

I can't test it on my calculator since I removed the jack from it.

The chip on it is this: http://pdf1.alldatasheet.com/datasheet-pdf...SC/LM339AM.html

It says it's a Low Power Low Offset Voltage Quad Comparator. That doesn't seem like the circuit I was expecting.

Fox9p3400 · « **Reply #4 on:** August 04, 2009, 07:28:00 PM »

Hmm... I at a loss. According to http://www.ftp83plus.net/cablesA.htm The TX/RX lines arent used or connected at all. BTW you know you can sample free MAX3232's from maxim-ic.com and build the circuit found here: http://beta.ivancover.com/wiki/index.php/X...D2S_Extract_Key

Fox9p3400 · « **Reply #5 on:** August 04, 2009, 10:10:00 PM »

Try this tut http://forums.xbox-scene.com/index.php?showtopic=668247

quadomatic · « **Reply #6 on:** August 05, 2009, 02:05:00 PM »

QUOTE(Fox9p3400 @ Aug 4 2009, 11:10 PM)

Try this tut http://forums.xbox-scene.com/index.php?showtopic=668247

That was the first thing I tried. No luck. Hyperterminal test works, but I can't get a key dumped. I get a Serial Data is Bad error.

http://forums.xbox-scene.com/index.php?showtopic=689045

This post has been edited by quadomatic: Aug 5 2009, 09:06 PM

Hybrid13 · « **Reply #7 on:** August 07, 2009, 04:10:00 AM »

I found this one to be good, it worked for me and ive done 3 liteon with it. http://forums.afterdawn.com/thread_view.cfm/767988

Author Topic: Use Ti Calculator Graph-link As Lite-on Key Extractor (Read 81 times)