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  Topic: alternative T420s board design (img)
Raik

Replies: 1
Views: 3057

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Sun Nov 10, 2019 12:07 am   Subject: alternative T420s board design (img)
FRU: 63y1914
Victor, can you add it to your collection?
https://i.imgur.com/WtktfYx.jpg
  Topic: Circuit building
Raik

Replies: 1
Views: 5654

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Mon Sep 01, 2014 9:49 am   Subject: Circuit building
I have used a stripboard and cut the traces with a dremel.
http://www2.picfront.org/picture/B5wGshW2llN/thb/Schaltung.png


Victor told me already, that i switched (mirrored) the connector, and th ...
  Topic: X30 password crypted?
Raik

Replies: 3
Views: 5171

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Tue May 08, 2007 7:58 pm   Subject: X30 password crypted?
Suggestion:
Show Numbers red and Letters blue in IBMpass, to distinguish. Smile
  Topic: [Practice] Making it work.
Raik

Replies: 37
Views: 177022

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Wed May 02, 2007 4:35 pm   Subject: [Practice] Making it work.
if you change the driven-i2cprog.pdf [url=http://imghost.webspell.eu/image.php?id=d29356a110faad3872d0d79ae1060e1c]this way, it will be more clear.
  Topic: [Practice] Making it work.
Raik

Replies: 37
Views: 177022

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Mon Apr 30, 2007 1:50 pm   Subject: [Practice] Making it work.
it is usb-powered. a little resistor may help? or something, to limit the maximum voltage?
better lower booth values, the 0,68V too, or just restrict the Vmax ?
  Topic: [Practice] Making it work.
Raik

Replies: 37
Views: 177022

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Mon Apr 30, 2007 12:31 pm   Subject: [Practice] Making it work.
http://allservice.cabspace.com/dl/r40-tutorial.rar <<< link is dead.

my driven circuit deliveres
SDA +4,99 V / +0.68 V
SCL +5,00 V / +0.68 V
but switches booth SDA & SCL as expecte ...
 
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