From: peterson_at_d...
Date: 2001-04-04 22:11:45
--- In buildcheapeeg_at_yahoogroups.com, Moritz v. Buttlar <info_at_baltic-microsolutions.de> wrote:
> >> I
> > > would say, however, that I believe we should aim to produce a
> > > device that everyone can use, not just those with the right
> > > hardware.
> > > Regards
> > > Eric
> >
> > I have to agree, I think it is absolutely vital to have a common
interface. If we use an interface that only a small percentage of
users have, we might be making a dead product.
>
>
> Most PCs have conventional 9pin RS232 serial interfaces. If we use
this -
> without any IrDA infrared communication - and use simple
optocoupler-isolation,
> I´m not sure if the design would be safe enough to meet safety
norms.
>
> What do you think ? Would it be too expensive to spend 30$ on an
IrDA module ?
> How many people have a notebook computer with IrDA in this group ?
>
>
> Moritz
I have 1 laptop with & 1 without IrDA & don't think $30 is
unreasonable, but it _is_ proabably a significant cost for some
people, especially considering how cheap the rest of the devide will
be. I think there are a lot of other machines on the market using
serial connections w. optic coupling. Rex Hartzell's Discovery
Engineering Inc. machine, for example. Lexicor connects their stuff
to the parallel port. As a non-geek, I don't know why you would want
to use serial rather than parallel, since I always though parallel
was inherently faster, carrying 8 bits at once instead of 1.
Jim
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:29 BST