Hello there, I just wanted to share a little weekend project of mine. This is a work in progress, but so far it's been fun.
I have been lucky to find these two:
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At my local recycling center, for few euros. The kb101a is very yellow, but i've already retrobrighted the keys, and the case is gonna go next, but that's not the focus of this post. The little "Techware" branded board (identical to wyse ascii, and made by the same company i believe Dih Shin CO. Luckily i've found out about soarer's wyseverter thanks to this forum, and that's the first thing i did in this board. It worked very well but the key remapping is a bit tedious, and since i had a blackpill board laying around, i thought why not go for it, especially that this helpful gentleman has already figured out the matrix and very neatly compiled everything for reference for folks like me:
https://www.scottpaladin.com/home/2018/ ... -project-n, huge thanks.
I really love how sturdy and brick-like this little board is, and the layout with some tweaks is bearable, however the black cherries, even the smoother vintage ones don't do it for me, as i don't like to type harshly and need some kind of feedback... Sooo, i was on a lookout for a 5v relay that would fit in the case. Regular solenoid wouldn't really fit there. Trouble is most relays with coils rated for such a low voltage are usually "solid state" and they don't make a nice sound at all. Luckily i was spending the weekend at my good friend's place, and his dad is an oldschool electronic expert, and a bit of a hoarder at that, so he was kind to give me this beautiful 6-volt relay, made in poland
It does run from 5 volts without a problem, however it had a tendency to stick a bit, which i have solved by bending the contacts a tiny bit, making it move less, now it works flawlessly. Relay is powered by a random transistor we had laying around, there's just a diode between the coil ends and that's about it...
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i've setup the relay to be toggled on by the "setup" button. I had to experimented with the dwell time setting in qmk a bit, and i keep it at 80 miliseconds. Default setting was too short for this relay to work. Here is a little demo of how it works:
There is only a small problem: it's still to thick to fit in the case. about 3-4mm too thick. So, i was thinking, since i don't want to butcher the original case, and the top is a relatively simple piece, shape-wise... How about, a new top case, with a cutout for that beautiful translucent relay to peek through?
it was a tight fit, and some fiddling with very thin wire 
metal 
