In article <Pine.LNX.3.96.980713185407.21405C-100000@reg16.admin.rochester.edu>,
R. Paul McCarty <mccarty@reg16.admin.rochester.edu> wrote:
>$99/each. I'm trying to find out if they've used them for other
>applications (for example, if they are general purpose; you might plug one
>into your wearable and the other into a parallel->scsi, or
>parallel->ethernet connection and have a dirt cheap wireless ip
>connection)
My understanding is that these sorts of transceivers are somewhat smart;
they understand that the host is sending a byte stream to the printer,
so they package that up and send it to the other end. Presumably they also
send status-pin state back to the originating end. This is more efficient
than repeating each pin's state to each end, but it means that you can't
use the transceivers for oddball applications like SCSI or quickcams.
(Cheap wireless IP might still be possible but you'd want to adapt the
protocol to the transceiver...)
Disclaimer: I've never actually looked at one of these things up close.
For around a hundred bucks, I think you can get pretty cheap
400-odd MHz transceiver modules from distributors like DigiKey. Their
data rates aren't that good though.
--
Wim Lewis * wiml@hhhh.org * Seattle, WA, USA
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