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Any pcb designs/kits to turn X40 keyboard+TP into USB or PS/2?

X2/X3/X4x series specific matters only
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abvgdee
Posts: 2
Joined: Thu Oct 11, 2012 8:18 am
Location: Moscow, Russia

Any pcb designs/kits to turn X40 keyboard+TP into USB or PS/2?

#1 Post by abvgdee » Wed Apr 12, 2017 2:50 am

I was thinking on using X40 keyboard & trackpoint as external (for an SBC like raspberry, for example). Unfortunately all the accompanying electronics is on the motherboard! Does anybody know if there are some magical PCB designs/kits that would have the proper matching socket (2x22 pins, keys and TP) on its one end, and some standard plug (USB or PS/2) on the other end?

axur-delmeria
ThinkPadder
ThinkPadder
Posts: 1724
Joined: Mon May 28, 2012 5:49 am
Location: Metro Manila, Philippines

Re: Any pcb designs/kits to turn X40 keyboard+TP into USB or PS/2?

#2 Post by axur-delmeria » Wed Apr 12, 2017 9:38 am

There was one here, but it's not for sale anymore. :(
Daily driver: X220 4291-C91 i7-2620M

Backup: X220 4291-P79 i5-2520M
Toy: X60/s Frankenpad Core Solo U1300
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E, X61 T7500
:cry:

abvgdee
Posts: 2
Joined: Thu Oct 11, 2012 8:18 am
Location: Moscow, Russia

Re: Any pcb designs/kits to turn X40 keyboard+TP into USB or PS/2?

#3 Post by abvgdee » Thu Apr 13, 2017 2:52 am

Thanks! There's also the connector pinout there. I'll keep this project in mind..

axur-delmeria
ThinkPadder
ThinkPadder
Posts: 1724
Joined: Mon May 28, 2012 5:49 am
Location: Metro Manila, Philippines

Re: Any pcb designs/kits to turn X40 keyboard+TP into USB or PS/2?

#4 Post by axur-delmeria » Thu Apr 13, 2017 5:54 am

Here's the blog of the developer of that Thinkpad USB keyboard adapter: https://flashandrc.wordpress.com/

Of particular interest are the schematics:

USB-only version: https://flashandrc.files.wordpress.com/ ... v0-6-2.pdf

Aborted USB/Bluetooth version: https://flashandrc.files.wordpress.com/ ... sb_kbd.pdf
Daily driver: X220 4291-C91 i7-2620M

Backup: X220 4291-P79 i5-2520M
Toy: X60/s Frankenpad Core Solo U1300
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E, X61 T7500
:cry:

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