12975Re: [midatlanticretro] TRS-80 Model II keyboard
- Jun 10, 2009On Wed, 10 Jun 2009, Dan Roganti wrote:
> Save the old foam pieces from the keyboard , I like to compare them thisI still think you're on the wrong track with this foam thing.
> wknd when I get there.
>> Oops...the vacuum ate it. :-) Seriously, what was left couldn't be
>> removed in one piece: it crumbled at the least touch.
> oh ok, I'm waiting til I get there to take mine apart - maybe there's
> some left in m ine that's till intact and we can compare the readings -
> I'll bring my Cap meter too.
According to my reading, the foam is not the dielectric, but the conformal
coating over the semicircular pads on the PCB. All you have to do is get
the mylar pad close enough to the PCB and you have a capacitance change.
- << Previous post in topic Next post in topic >>