WTB: DONE: Keyboard PC AT (DIN-connector) small (DE) - Page 1
Forum section: electronics / general

author: Peter_O
author_rank: Frequent Contributor
timestamp: May 29, 2022, 09:36:20 am
content: Meanwhile I got one, see below. Thx for the offers!================================================Im looking for an AT keyboard to connect with the 5 pin DIN port of my HP35665A Dynamic Signal Analyzer.It would be nice to have a compact small one.25 years ago I had some ...Why a keyboard?A 68000 CPU with co-processor is running this device. It's possible to write BASIC programs to automate measurements and connect to other devices via GP-IB.

author: DC1MC
author_rank: Super Contributor
timestamp: May 29, 2022, 10:09:20 am
content: Here's a way simpler solution:https://www.ebay.de/itm/144574945884https://www.ebay.de/itm/19423191256Cheers,DC1MC

author: Ian.M
author_rank: Super Contributor
timestamp: May 29, 2022, 11:15:10 am
content: Quote from: DC1MC on May 29, 2022, 10:09:20 amGet the short cable version of the adapter:https://www.ebay.de/itm/192948078214as the solid one's leverage due to its extra length puts too much strain on the DIN socket!

author: DiTBho
author_rank: Super Contributor
timestamp: May 29, 2022, 11:15:26 am
content: Quote from: Peter_O on May 29, 2022, 09:36:20 amWOW, 68k! I am a fan!I bought a graphing pocket calculator(1) only because 68SEC000 based, and an industrial embroidery machine frame only because 2x68060 based.Nowadays you can buy Multimeter, DSO, MSO, programmable PSU, LA, and SA, usually with Serial or USB and Ethernet connections and - if you are lucky - compatible withSigrock, so you can automate measurements with Linux scriptsIf you have time, I really suggest you (even just for curiosity) to give a look at their website. It's very interesting.But, I have to warm you: it's tempting, indeed I specifically bought a Multimeter only because supported by their software and documented in every detail about the used protocol(1) Texas Instruments ti89 Titanium with Keyboard

author: Peter_O
author_rank: Frequent Contributor
timestamp: May 29, 2022, 03:27:19 pm
content: Quote from: Ian.M on May 29, 2022, 11:15:10 amI have this PS2 to DIN adaptor and it does not work.Maybe the green USB to PS2 adapter was the wrong one (for mice?) and I need a purple (for keyboard) one.Maybe a modern USB keyboard is not able to detect that the 'old world' is on the other side.And - beside that - it would be not in style.

author: Peter_O
author_rank: Frequent Contributor
timestamp: May 29, 2022, 03:32:19 pm
content: Quote from: DiTBho on May 29, 2022, 11:15:26 amYea. Sure. But I like to play with the old stuff. GPIB was the standard some 30 years ago when I did some TE programming for a living.Sigrok I know from the protocol analysing stuff with these cheap chinese thingies.

author: Ian.M
author_rank: Super Contributor
timestamp: May 29, 2022, 03:58:44 pm
content: Cheap USB=>PS2 adapters are just wiring, with no active components, so they need a keyboard that comes from the transition era circa Y2K when USB was gaining market share, that does autosensing PS/2 or USB on the same pair of signal wires, and probably came with a similar adapter. Modern USB keyboards don't support PS/2 mode and even if you use an old one, your non-PC device may not start its PS/2 keyboard interface with a 'handshake' an autosensing PC keyboard can recognize.Also it was possible to have both a mouse and keyboard on the same PS/2 port - common on laptops of that era, which used the extra normally N/C pins - so its possible your green adapter is miswired. Beep it out and see if the PS/2 keyboard data and clock pins go to the USB data pins.Find a legacy keyboard with a PS/2 plug on it and it should 'just work'.

author: DC1MC
author_rank: Super Contributor
timestamp: May 29, 2022, 04:06:31 pm
content: Quote from: Peter_O on May 29, 2022, 03:27:19 pmThe DIN and PS/2 port have identical electrical and data protocol signals, I was not implying to use a USB to PS/2 adapter as well, these are 100% absolute trash ( I only got 1 out of 5 different to work with a MS keyboard that I've liked), but you can find on Kleinanzeigen actual PS/2 keyboards of the same vintage, that look really good, for as low as 3-6EUR. In any case the USB to PS/2 adapter for mouse will NEVER work with a keyboard.So my full suggestion is get an proper adapter PS/2 to DIN, and a proper PS/2 keyboard to match.Cheers,DC1MC

author: Ian.M
author_rank: Super Contributor
timestamp: May 29, 2022, 04:22:48 pm
content: Your second link is NFG (item no. a digit too short) so try:https://www.ebay.de/sch/i.html?_nkw=PS%2F2+tastatur

author: andy3055
author_rank: Super Contributor
timestamp: May 29, 2022, 04:54:22 pm
content: Try this:https://www.amazon.com/ps2-keyboard/s?k=ps2+keyboard

author: merox
author_rank: Regular Contributor
timestamp: May 31, 2022, 06:22:11 pm
content: Hi Peter,I could offer you this small keyboard made by Cherry.It comes with a PS/2 connector but should work with a simple adaptor from PS/2 to AT. As said by other posters, the interfaces should be electrically the same.It's old and therefore a bit yellowed and dirty but apart from that it works fine.If you pay for shipping (and maybe a small tip :-) ) it is yours.

author: jorgeh
author_rank: Regular Contributor
timestamp: June 01, 2022, 10:03:19 am
content: Hi Peter,I habe some old with AT din5 connector. let me check in the warehouse which still survive so i can upload a picture of them. I live in Münster in case you live in the area.or you can buy my dolch PAC386 it comes with a detachable din compact keyboardthis modellhttps://bw-schmitti.de/produkt/dolch-computer-system-pac-3863/i have this modell, idk if it could be considered as compact.https://bw-schmitti.de/produkt/bundeswehr-gfk-tastatur-heros-computer-incl-srollball/although mine instead of having a serial port it has one of this MIL connector.Quote from: Peter_O on May 29, 2022, 09:36:20 am

author: Peter_O
author_rank: Frequent Contributor
timestamp: June 01, 2022, 07:15:19 pm
content: Quote from: merox on May 31, 2022, 06:22:11 pmPNs exchanged. Deal.

author: Peter_O
author_rank: Frequent Contributor
timestamp: June 01, 2022, 07:19:08 pm
content: Quote from: jorgeh on June 01, 2022, 10:03:19 amThx jorgeh!I'll go with merox's small Cherry. Had something like that in my mind.A 'Dolch' is always very tempting, but I have an Lab PC already. And I have no space.So, thank's for your offers, but I have to keep my trigger fingers on hold.

author: Peter_O
author_rank: Frequent Contributor
timestamp: June 11, 2022, 08:16:46 am
content: And here it is. A nice fit and working with a cable adapter.Thx merox!Thx to all!