ps2 keyboard--->USB

[polyal]

Has anyone converted a ps2 keyboard to USB
i have tried adapters but they dont work
is there any small circuit . . pref DIY that will do the conversion
regards

[Rustys]

No
Found it cheaper and less trouble sum to get a USB no frills keyboard.

[polyal]

iv’e got several USB keyboards but my IBM ps2 is far superior build wise
i would like to convert it if possible
can we let this thread run a while to see if anyone might have done this
thanks

[Bruce]

back in the day, yes, lots of times, as we all transitioned from PS/2 to USB devices.
was the adapter you tried one of these type;

[ATTACH type=“full” width=“155px”]8474[/ATTACH]

and did you reboot the PC after plugging in the keyboard as PS2 ports are only initialised at startup.
from memory, always found those adapters worked for me.

[polyal]

i have tried several adapters but none work with my ibm102 keyboard ( plugging then rebooting )
i think these adapters are passive
i have seen it done in the past with a small active adapter circuit

[Rustys]

See if this helps also read the Warning that is there as well.

https://forums.tomshardware.com/threads/ps-2-keyboard-to-usb.1884119/

[polyal]

some ps2 devices require an active ps2->usb connector and do not work correctly with just a wire switchover.
i found a circuit using a microcontroller but its not really presented wih diy in mind
a manufactured version might be an option depending on availabiltity and price
other than that it seems like a lost cause
[ATTACH type=“full”]8476[/ATTACH]

[Rustys]

Keyboards are not so easy as mice are to convert.

Google can be you friend.

https://www.google.com/search?q=ps2+keyboard+to+USB&ei=xHtgYd3UD8SmqtsPnua4oAk&ved=0ahUKEwjdxp3Ep7vzAhVEk2oFHR4zDpQQ4dUDCA4&uact=5&oq=ps2+keyboard+to+USB&gs_lcp=Cgdnd3Mtd2l6EAMyBQgAEIAEMgUIABCABDIFCAAQgAQyBQgAEIAEMgUIABCABDIFCAAQgAQyBQgAEIAEMgUIABCABDIFCAAQgAQyBQgAEIAEOgcIABBHELADOgYIABAHEB5KBAhBGABQ9yFYljlgsz9oAXACeACAAX2IAZMDkgEDMy4xmAEAoAEByAEIwAEB&sclient=gws-wiz

https://www.amazon.com/s?k=ps2+to+usb+adapter+keyboard&crid=15GKL4AO5KYDF&sprefix=ps2+to+usb+adapter%2Caps%2C273&ref=nb_sb_ss_ts-doa-p_1_18

[polyal]

these adapters dont work with legacy devices
they only work if the device has both usb and ps2 protocol
built in its design . . . they can be useful but not in
this instance
thanks

[Rustys]

How many pins does the keyboard have?

Can you post a pic of it I think your keyboard may be an AT connector.

[polyal]

its ps2 not AT

[Rustys]

Unless @Bruce has any other ideas then kind of out of options.

Have you tried the local shops see what they suggest.

[Bruce]

sorry, too deep for me.
I’d simply be getting an equivalent well built mechanical replacement USB keyboard.
let’s face it, sentimental value aside, you’re going to have to bite the bullet one day.

I gave up when I saw that diagram in post #7 where it had (to my knowledge) the USB pin layout wrong on the left hand side.
below is what I’ve been using for making USB connections, but maybe that diagram is what’s needed to convert to PS/2.
[ATTACH type=“full” width=“99px”]8484[/ATTACH]

[Rustys]

Do you need any further assistance

[Rustys]

Thread closed