[vcf-midatlantic] Keyboard keyswitches wanted

[Jonathan Gevaryahu]

Note: those Honeywell hall effect switches are in demand by certain 
people on deskthority, who I've been lead to believe use them for 
purposes very much against the spirit of vintage computing. (newly made 
retro-style USB homebrew keyboards using the keyswitches ripped out of 
an old symbolics or similar hall-effect keyboard, for instance)

Be wary of whoever you sell them to! It'd be a shame if these are wasted 
on a modern project, rather than for repairing something vintage which 
can't use anything except the original parts. Its practically impossible 
to retrofit mechanical switches in place of these, for instance.

I know of someone who is looking for some of these same exact switches 
to fix a broken symbolics keyboard for use on an actual symbolics machine.
Contact me if you have some of them available, and I'll pass it along.

On 12/7/2016 8:55 PM, Herb Johnson via vcf-midatlantic wrote:
> A colleague of mine, is trying to repair his mid-1970's keyboard. He 
> may well find old-stock unused keyswitches, but I'm betting not. They 
> were likely made by MicroSwitch, owned at some point by Honeywell. 
> They are Hall-effect. They have four pins, they need 5V power. This is 
> not a common microcomputer.
>
> Here's a link to deskthority.net, of what the keyswitches look like.
>
> https://deskthority.net/wiki/Micro_Switch_SD_Series
>
> specifically:
>
> https://deskthority.net/wiki/File:2011-11-07_16.15.40.jpg
>
> But there's lots of variations. No point in describing them further, 
> most won't have these keyswitches. If you have something like this, 
> and can unsolder several (and one for inspection), contact me directly 
> and we'll go from there.
>
> Herb Johnson


-- 
Jonathan Gevaryahu
jgevaryahu at gmail.com
jgevaryahu at hotmail.com