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For those who might want to contribute to the blog, start here: Editors Alley Topic
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Any pcb designs/kits to turn X40 keyboard+TP into USB or PS/2?
Any pcb designs/kits to turn X40 keyboard+TP into USB or PS/2?
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?
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axur-delmeria
- Senior ThinkPadder

- Posts: 4413
- 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?
There was one here, but it's not for sale anymore. 
Planned Purchase: T480s i5-8350 FHD Touch
Impulse Buy: Thinkpad not named for safety reasons
RIP: X220 4291-C91 X61 7676-A24 760XD-U9E
Impulse Buy: Thinkpad not named for safety reasons
RIP: X220 4291-C91 X61 7676-A24 760XD-U9E
Re: Any pcb designs/kits to turn X40 keyboard+TP into USB or PS/2?
Thanks! There's also the connector pinout there. I'll keep this project in mind..
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axur-delmeria
- Senior ThinkPadder

- Posts: 4413
- 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?
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
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
Planned Purchase: T480s i5-8350 FHD Touch
Impulse Buy: Thinkpad not named for safety reasons
RIP: X220 4291-C91 X61 7676-A24 760XD-U9E
Impulse Buy: Thinkpad not named for safety reasons
RIP: X220 4291-C91 X61 7676-A24 760XD-U9E
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