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Posted: 19 Jan 2023, 21:30
by dellmodelm
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Re: Model M plastic membranes

Posted: 21 Jan 2023, 02:12
by AndyJ
I don't know about "wear out" per se, but sometimes the printed traces will break. The exact cause isn't obvious on a board that can be more than thirty-five years old.

Re: Model M plastic membranes

Posted: 21 Jan 2023, 17:45
by Muirium
Longevity isn’t their primary concern. The general lousiness of Model M compared to Model F is much more pronounced. Those membranes can and usually do work for decades without fail, just as they do in the cheapo rubberdome keyboards where they belong.

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Posted: 21 Jan 2023, 21:58
by dellmodelm
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Re: Model M plastic membranes

Posted: 21 Jan 2023, 22:05
by fohat
dellmodelm wrote: 21 Jan 2023, 21:58
with PCB contacts
Capacitive? Yes, that would be the Model F.

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Posted: 21 Jan 2023, 22:24
by dellmodelm
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Re: Model M plastic membranes

Posted: 21 Jan 2023, 22:43
by kmnov2017
dellmodelm wrote: 21 Jan 2023, 22:24
fohat wrote: 21 Jan 2023, 22:05that would be the Model F.
No, like, modding an actual model M with PCB.
Yes, plenty of people have done that. Lookup FSSK.

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Posted: 21 Jan 2023, 22:50
by dellmodelm
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Re: Model M plastic membranes

Posted: 21 Jan 2023, 22:57
by dcopellino
kmnov2017 wrote: 21 Jan 2023, 22:43
dellmodelm wrote: 21 Jan 2023, 22:24
fohat wrote: 21 Jan 2023, 22:05that would be the Model F.
No, like, modding an actual model M with PCB.
Yes, plenty of people have done that. Lookup FSSK.
Exactly, as i did, following i$ tutorial, you'll get model F's lightness and crispness touch into a model M current layout.

Re: Model M plastic membranes

Posted: 22 Jan 2023, 13:33
by Muirium
Note that all such Model F upgrades for Ms swap in F flippers. It’s not really the capsense per se* that makes F special, it’s those bigger flippers and the hardness of the PCB they work against.

*I’d argue capsense is the critical factor which sets (my also beloved) Topre apart from regular cheapo rubber dome keyboards. Buckling spring brings a great big tactile event all by itself, which any sensing system can see.