Help with this keyboard

[poskoz]

Hello everyone, my name is steve from italy
I just got this keyboard, it is from honeywell and i suppose is an hall effect keyboard, maybe is from bo1810 terminal
have you got any idea on how to make a converter? it's got a 25 pin serial

[poskoz]

thank you very much for your passion on this topic

[TNT]

Nice find and welcome!

I remember that there are some threads here where people actually converted their honeywell boards. Like this one here: viewtopic.php?f=7&t=19688&p=423217&hili ... ct#p423217

or this one

viewtopic.php?f=7&t=24822&p=474330&hili ... ct#p474330

Maybe the wiki page has some links? wiki/Micro_Switch_SD_Series#Documentation

You have to search around a bit, but maybe you'll find something helpful. I also still have a microswitch board laying around, but it's a bit intimidating so I haven't really started with converting that ...

[poskoz]

thank you very much for your reply, I will definetly look around , i hope i can hook it to my pc

[ntv242ver2]

Hello everyone, my name is steve from italy
I just got this keyboard, it is from honeywell and i suppose is an hall effect keyboard, maybe is from bo1810 terminal
have you got any idea on how to make a converter? it's got a 25 pin serial

can we see the picture of the switch just to be sure?

Idk why but the caps dont look microswitch in this pic, maybe just me though.

[Muirium]

Caps—and whole board—look very Micro Switch to me. I like it.



Good luck with the conversion. I've still not got around to it. But I know it can be done! Do share the details if you do.

[TNT]

How would one achieve this without a logic analyser?

[Muirium]

I think MMcM knows how.

[TNT]

That's plenty helpful, thanks

[poskoz]

hello, here there is a picture from the inside, looks the same apart from the keys layout i guess is micro switch hall effect

[Muirium]

Yes it definitely is. But the caps just pull off quite easily, and are fun to look at from the inside. You may want to clean them, I always do on anything but pristine boards.

Think the spacebar has a clip in stabiliser and that’s about it.

[poskoz]

very nice! i allready cleaned the inside and everything, unfortunately i don't know much about electronic stuff and im not shure i can do anything.. lol anyway maybe honeywell made a converter to a more standard serial port like the rs232 or rs 485 back in the days? if so it will be easier to drive i guess

[poskoz]

I think it can be done with an arduino aswell

[poskoz]

I think the easiest way is this: viewtopic.php?p=483317#p483317
but is anyone knows how to wire the teensi and the db25 port? after that i can just program it with the github software
and fix a few lines any clues? thank you

[Muirium]

Thanks for finding that again for me, I knew McMM had converted my keyboard somewhere!

The pin assignments are in the readme.

[poskoz]

ah thank you nice one! i hope the pinout is the same and there should be no problem

[Muirium]

You're probably fine. But I'd definitely check with McMM, in your case. It's possible to wreck the electronics with mistaken pins.

[poskoz]

You're probably fine. But I'd definitely check with McMM, in your case. It's possible to wreck the electronics with mistaken pins.

Yes indeed, I was actually thinking the same, one mistake, especially with the power and that's it. I was looking for the pinout but it doesn't seems to be that easy for example a wile ago you posted this: viewtopic.php?t=6296
but that db25 pinout does not match with the read me file on github, so im a bit confused , do you suggest to contact McMM? shall i send him an email? thanx for the help!

[Muirium]

The kbdbabel pinout may well be wrong / for the wrong keyboard. I never did get around to testing it. I'd trust McMM's findings.

[poskoz]

yep indeed

[poskoz]

The kbdbabel pinout may well be wrong / for the wrong keyboard. I never did get around to testing it. I'd trust McMM's findings.

I tried to write to mcMM but he does not answer is he still avaiable have you got any idea? thanx

[Muirium]

Then we have a similar relationship.

[poskoz]

ah ok he must be a busy person! I hope some day he will get back to me! thanx anyway