Teardown - Omron B2H triple-magnet clicky Hall effect switches

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Chyros

03 Apr 2021, 17:35

Today we're looking at one of the most interesting switches I've encountered so far; a clicky Hall effect switch with counter-moving magnets. Hope you enjoy the video! :)

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vvp

03 Apr 2021, 18:43

I have a guess for the metal plate behind the slider magnet. It is there to linearize magnetic field change depending on press depth. The hall sensor output should be more linear with it.

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Lalaland124

03 Apr 2021, 19:24

Great teardown! Would be awesome to hear what the switches sound like in a proper case.

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hellothere

07 Apr 2021, 22:33

Lalaland124 wrote:
03 Apr 2021, 19:24
Great teardown! Would be awesome to hear what the switches sound like in a proper case.
You might be waiting for a while. Quoting telcontar.net, "Only one B2H switch model has been found to date, which is a low-profile PCB-mount Hall effect switch. No keyboards have been observed thus far." :cry:

Chyros does have a bunch of keyboards, so maybe ...

I think this is the right link: https://telcontar.net/KBK/SwitchCollect ... ies?id=114. For more info.
There's a current Yahoo auction for some B2H switches here: http://bike.contacto.jp/yahoo/lot?auctionID=k543081002. $5.00 a piece.

I looked at the B2R keyboard, which uses these switches (possibly NOS) and they don't look pin compatible or size compatible, so if you happen to find a B2R-based keyboard, B2H switches wouldn't fit.

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