IDENTIFY THE KEYSWITCH thread

[hellothere]

Dome w/slider: https://imgur.com/a/MPHwQS1

[Bjerrk]

Anyone have any idea about this funky looking switch in a Philips keyboard?

Looks like a rubber dome + plunger, but the design is interesting ...

[Muirium]

Kinda cool actually. But yeah, the long centre on the caps looks like a plunger and those clips around it are very reminiscent of rubberdomes like on Apple's early 2000s desktop boards. Haven't seen 4 of them per cap, however. Seems well engineered!

The cap profile is interesting too.

[Bjerrk]

Kinda cool actually. But yeah, the long centre on the caps looks like a plunger and those clips around it are very reminiscent of rubberdomes like on Apple's early 2000s desktop boards. Haven't seen 4 of them per cap, however. Seems well engineered!

The cap profile is interesting too.

There are more photos of the thing here!

Edit: Idiot that I am, I just realized that the listing says "rubber domes". Still, would like to hear about it if anyone has tried these particular ones.

[John Doe]

Anyone could confirm the switches? Seems kinda magnetic or related of sort?

3C4FD515-F559-4752-9D32-703AEDFE4684.jpeg (581.73 KiB) Viewed 12248 times

C5E114A8-8B55-4F9D-ACC1-B0C95179697A.jpeg (483.69 KiB) Viewed 12248 times

[PlacaFromHell]

Anyone could confirm the switches? Seems kinda magnetic or related of sort?

3C4FD515-F559-4752-9D32-703AEDFE4684.jpeg
C5E114A8-8B55-4F9D-ACC1-B0C95179697A.jpeg

This one? viewtopic.php?t=15010

[John Doe]

Anyone could confirm the switches? Seems kinda magnetic or related of sort?

3C4FD515-F559-4752-9D32-703AEDFE4684.jpeg
C5E114A8-8B55-4F9D-ACC1-B0C95179697A.jpeg

This one? viewtopic.php?t=15010

Looks exact same, thanks.

[Lalaland124]

Unfortunately I don't have much info but it's from an old Roseville Operations Computer with integrated keyboard.

[John Doe]

Unfortunately I don't have much info but it's from an old Roseville Operations Computer with integrated keyboard.

Cherry?
https://www.ebay.com/itm/233507535820

[Lalaland124]

Unfortunately I don't have much info but it's from an old Roseville Operations Computer with integrated keyboard.

Cherry?
https://www.ebay.com/itm/233507535820

True! Looks very similar, thx!

[hellothere]

Unfortunately I don't have much info but it's from an old Roseville Operations Computer with integrated keyboard.

Cherry?
https://www.ebay.com/itm/233507535820

True! Looks very similar, thx!

FWIW, that guy on ebay has been trying to sell those keyboards for at least two months, if not more. So, if you were looking for an approximate value, I wouldn't use that ad as a guide.

[Go-Kart]

T.I. Board, 914 model? Doesn't look like MS HE to me. Anyone have any idea?

Spoiler:

TI Board 1.jpg (228.35 KiB) Viewed 12024 times

TI Board 2.jpg (142.38 KiB) Viewed 12024 times

TI Board 3.jpg (257.48 KiB) Viewed 12024 times

TI Board 4.jpg (233.29 KiB) Viewed 12024 times

[coolrainbow20]

What is that switch?
Switch and Double-shot Keycap

photo_2021-05-12_13-01-59.jpg (74.49 KiB) Viewed 11904 times

Backside of Keypad/Keyboard

photo_2021-05-12_13-02-03.jpg (59.95 KiB) Viewed 11904 times

Sound test
[youtube]https://www.youtube.com/watch?v=TVecsXo_4J8[/youtube]

I know the following about it:

• The calculator is made by brother in japan and has the following model no.: 121DN
• Switch cannot be newer than 1977, since the calculator design is from 1977
• Switch is linear
• Switch feels damped like Cherry MX Silent Red
• Switch smoothness feels a bit more smooth than a cherry mx red, almost like a pre-lubed Kailh speed silver
  If I put the keypad/keyboard next to my ear, I can hear some friction like cherry mx or other mechanical switches
• Switch weighting is around 40gf to 50gf I think.
• Switch is normally pressed and the external coil spring pushes the slider with the keycap out, so it comes depressed.
• Switch mount is not MX compatible
• Switch mount is vintage T mount alps compatible

The following two types of switches came to my mind: capacitive switches or reed switches

[John Doe]

I got this pad today, but being confused abt what this is, and even no idea about the key switch, need help here.

FB5271BA-936C-4F95-B46A-AE54E013EBE1.jpeg (2.65 MiB) Viewed 11817 times

F3CF2500-61CC-4E9A-A9CE-530C2EC99D79.jpeg (2.67 MiB) Viewed 11817 times

965D3A2A-A0AF-47B0-A4C6-1E2EEA060FDA.jpeg (5 MiB) Viewed 11817 times

[Dingster]

I got this pad today, but being confused abt what this is, and even no idea about the key switch, need help here.

FB5271BA-936C-4F95-B46A-AE54E013EBE1.jpeg
F3CF2500-61CC-4E9A-A9CE-530C2EC99D79.jpeg
965D3A2A-A0AF-47B0-A4C6-1E2EEA060FDA.jpeg

https://telcontar.net/KBK/Sasse/Series_25

[Lalaland124]

Does Anyone know what switch type this is? It's from a data general board but looks very weird.

[John Doe]

Does Anyone know what switch type this is? It's from a data general board but looks very weird.

wiki/Fujitsu_Peerless

[Lalaland124]

Does Anyone know what switch type this is? It's from a data general board but looks very weird.

wiki/Fujitsu_Peerless

Thanks!

[june bug]

hey y'all, does anyone know what switch this is?

[zrrion]

Those are ALPS SKFF switches. that explains why caps on later Silver Reed typewriters are compatible with that mount

[june bug]

Those are ALPS SKFF switches. that explains why caps on later Silver Reed typewriters are compatible with that mount

thank you!

[soyuz]

Anyone have any idea about this funky looking switch in a Philips keyboard?

Looks like a rubber dome + plunger, but the design is interesting ...

Yeah, I have one of these too. Probably one of the nicer domes I've used (I think the fact the membrane is metal-backed helps with this a lot)

[Bjerrk]

Anyone have any idea about this funky looking switch in a Philips keyboard?

Looks like a rubber dome + plunger, but the design is interesting ...

Yeah, I have one of these too. Probably one of the nicer domes I've used (I think the fact the membrane is metal-backed helps with this a lot)

Thanks, soyuz!
The original post was from back in April, but it's good to know!

[Bjerrk]

Any idea what these funny looking external coil springy fellas are?

[claup812]

Topre-like rubber domes

[claup812]

This too.

[claup812]

Capacitive rubber domes

[schwi]

has anyone seen anything like this?
these are the actual switches themselves - but the top of the case has stem adapters mounted to it, which press on the actual switch, which seem to be microswitch sd mount..

the board is for a terminal which seems to come up under IP-1548/G

if there are any pictures that would be helpful, let me know. i can provide more.

[Lanrefni]

has anyone seen anything like this?
these are the actual switches themselves - but the top of the case has stem adapters mounted to it, which press on the actual switch, which seem to be microswitch sd mount..

the board is for a terminal which seems to come up under IP-1548/G

if there are any pictures that would be helpful, let me know. i can provide more.

That thing looks TEMPEST rated,so I'm going to guess it was added for EM shielding to prevent stray currents in the switch matrix.

[goomba_]

Are these plate springs? I looked through the wiki and didn't see anything that had this exact look but plate spring was the closest