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