On Wed, 5 Jan 2000, Charles J Knight wrote: > > > By micro, I mean something appx 1/4 the size of the HPLX series > > > keyboards, and wrist mounted. This would be the size of an > > > > > Thats exactly what I want to do, but Im nut sure what to use for the > > buttons...I saw some really small ones in the radio shack catalog > > but i dont know how much pressure it takes to puss them down, as I > > want to be able to just tap it, and not need to use my nail to push > > the thing down. Anyoen have suggestions for buttons? > > The only thing that springs to mind, is the "credit card" organizers > that have calculator key type buttons. There are a few that have a > fully QWERTY keyboard, though not the Fn-keys, etc. Some are > almost the right size -- a matrix printed on a PC board could go > underneath, and the keys usually have conductuve rubber underneath. > That would make it "work." I've stared at these a long moment at the counter at Radio Shack too and thought, these would make nice tiny keyboards, but you lose me further down.. > The matrix does not require discrete *buttons,* but only contact > between 2 conductors. :-) yep, get that. :) > Casing -- we're talking custom work. You could always hack the > casing from the organizer, though that's hardly ideal. There are > always options though. Wood, custom plastic, fiber/epoxy, metal, > and probably a few others I'm forgetting. well the organizer has a small grid of buttons and probably a thin contact board underneath that could easilly be slapped onto something more stable. But maybe a whole new aluminum plate with holes drilled for the buttons to sit in, but keep the original contact board would work. > Wiring -- there's a simple bundle of wires that comes out of the > SIMM stick, and the cable could probably remain. Alternately, > it's just a serial data stream, which means it could be hacked to > be wireless, whether it would be IR or radio is immaterial. Okay, now you lost me. What SIMM stick are you talking about here? I imagine the matrix contacts feed into the main board for one of those credit card sized organizers and I doubt there is a separate encoder chip. Even if there was it probably doesn't encode things into a nice serial steam or ps/2 encoded stream. But maybe it does. Have you tried this? -Paul -- Subcription/unsubscription/info requests: send e-mail with subject of "subscribe", "unsubscribe", or "info" toWear-Hard Mailing List Archive (searchable): http://wearables.blu.org
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