re-use wi fi modem

[Marcello]

Do you think is possible to make some embedded application comunicate
each other using some cheap solutions such as using pc wi-fi cards?
Do you have any other idea of other kind of 'very low cost and
reliable' solution to make this (let's talk of covered distance of
abot 100-200 mt)

Thanks
Marcello

 

[Jens Tingleff]

In article <tgh8b05eohdsr1uis9ca05ortn7i3ji9dh@4ax.com>, Marcello says...

Do you think is possible to make some embedded application comunicate
each other using some cheap solutions such as using pc wi-fi cards?
Do you have any other idea of other kind of 'very low cost and
reliable' solution to make this (let's talk of covered distance of
abot 100-200 mt)

A PCI card speaks, ah, PCI protocol. This is quite powerful and flexible and
perhaps a bit hard for anything other than commercial uses.

If one could find the right kind of USB Bluetooth dongle which would actually
have unused serial port terminals inside and tell the software on the dongle to
speak one of the well-defined Bluetooth UART protocols, one would be more than
halfway there. There is a report of a generic 15$ USB dongle being successfully
converted to speak over serial lines. This was done without access to the
chip-makers dev kit (i.e. using free stuff and the drivers that came with the
dongle). All this AFAIK, YMMV, HTH, HAND.

Bluetooth can go 100M distance ("class 1" devices) or more, and there are cheap
USB dongles which are Class 1.

Best Regards

Jens

Key ID 0x09723C12, jensting@tingleff.org
Analogue filtering / 5GHz RLAN / Mdk Linux / odds and ends
http://www.tingleff.org/jensting/ +44 1223 211 585
"Never drive a car when you're dead!" Tom Waits

 

[Ian Stirling]

Jens Tingleff <jensting@tingleff.org> wrote:

In article <tgh8b05eohdsr1uis9ca05ortn7i3ji9dh@4ax.com>, Marcello says...

Do you think is possible to make some embedded application comunicate
each other using some cheap solutions such as using pc wi-fi cards?
Do you have any other idea of other kind of 'very low cost and
reliable' solution to make this (let's talk of covered distance of
abot 100-200 mt)

A PCI card speaks, ah, PCI protocol. This is quite powerful and flexible and
perhaps a bit hard for anything other than commercial uses.

PCMCIA (the 16 bit original, not cardbus) is somewhat amenable to
being used.
Unfortunately, fewer and fewer devices are 16 bit.

 

[Frithiof Andreas Jensen]

"Marcello" <LEVApluto_71@hotmail.com> wrote in message
news:tgh8b05eohdsr1uis9ca05ortn7i3ji9dh@4ax.com...

Do you think is possible to make some embedded application comunicate
each other using some cheap solutions such as using pc wi-fi cards?

That is possible - if you du not want to have the basestation, you need to
build an ad-hoc network.
This is an active research subject - but it does in fact work for smaller
networks.

The "USB-dongle" WiFi/Bluetooth devices are the cheapest and simplest to
play with.

Do you have any other idea of other kind of 'very low cost and
reliable' solution to make this (let's talk of covered distance of
abot 100-200 mt)

Bluetooth can just about do it.

The catch is that many Bluetooth implementations do not support the
"piconet" formation that Bluetooth should be capable off, according to the
standard. Point-to-Point is always possible - then you need to build a
Router ;-)