'Mouth operated switches'
I would like to interface a PIC based IR decoder application to a Mouth
Does anyone know a link where to find information about this kind of
switches used by handicapped people. I would like to know if those switches
give binary coded output or just ON-OFF signal ?
AC Power Control project based on PIC
"Anyone whose family hasn't been touched by it
should get down on his knees every night and
thank the MAN upstairs"...........SAM COOPER
|Eduardo R. wrote:
> I would like to interface a PIC based IR decoder application to a Mouth
> operated switch.
> Does anyone know a link where to find information about this kind of
> switches used by handicapped people. I would like to know if those switches
> give binary coded output or just ON-OFF signal ?
> Best wishes
> Eduardo R
AFAIK they're usually either Sip-n-Puff switches (SPDT I believe),
could be done with a pressure transducer if that's more convenient for
you; Lots of time Sip-n-Puff is used for morse code for communication
(with different codes for wheelchair control, for example, while
I imagine some could be pressure switches as well (Bite switches.)
And some people use chin-operated joysticks to "aim" their wheelchairs
(If you knew the woman I am talking about, you'd know why I say she's
aiming her chair <G>
Robin's taking a nap just now ("zonked") but I can talk to her (she's
good at PT and OT type knowledge.)
Links I can find in a quick scan of my bookmarks pages:
http://www.Access-Ability.co.uk/products.html links page;
http://www.eskimo.com/~jlubin/ has some good pointers also.
If Robin & I can help, just ask. We've had lots of practice at doing
the impossible with baling wire, JBWeld, chewing gum, and pet fur <G>
Oh; for even more fun, the Adaptek Adap2U units (Jim Lubin uses one),
my brother Scott did lots/most of the design on, years ago - As we found
out when Robin tried to use one for a seminar (sadly, it didn't help her
much. That's why I'm working on the Keydler design, in the long term.)
Not that Scott & I ever talk (Estranged is putting it mildly, his
choice, oh well.) It's pretty flexible, our main problem was that it's
designed to run with a Herc monitor and a separate desktop computer - so
it's AC bound, though that beats NO computer access, it doesn't solve
the "how do I do embedded computer widgets in my electric wheelchair"
If it helps someone, great (Scott's moved on since to other things, I
guess.) The local rep was willing to lease one for the seminar Robin
used it during, which was nice though nae free <G>
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