Mesh Networks are how folks are setting up private wireless LANs using WiFi;
don't know how relevant it'd be to a Zigbee network, but it might give you some
ideas:
http://en.wikipedia.org/wiki/Wireless_mesh_network
m
----- Original Message -----
From: Andrew Roach
To: Model 100 Discussion
Sent: Monday, April 27, 2015 1:32 PM
Subject: Re: [M100] Xbee and m100
I know what you mean there!
Maybe one of the radio guys will chime in.
On Mon, Apr 27, 2015 at 1:28 PM Shaun M. Wheeler <cj.speake...@gmail.com>
wrote:
Nothing more than a couple of (somewhat legible) diagrams. We drew up a
convoluted system that relied on an antenna rotator, directional antenna, GPS,
and a bunch of cron jobs in Linux.
I might add, none of us really know what we're doing, radio-wise, we were
going to learn on-the-fly ;)
Can't remember what the GPS was for, though. Probably made sense after a
few beers...
On Apr 27, 2015 12:20 PM, "Andrew Roach" <ajroac...@gmail.com> wrote:
See, I knew I couldn't be the only person who started scheming like that
when I found out the theoretical range on these modules.
Did you ever get any further than considering/discussing?
On Mon, Apr 27, 2015 at 1:19 PM Shaun M. Wheeler <cj.speake...@gmail.com>
wrote:
We also considered an XBee uucp network as well, which could have been
implemented natively on a number of machines of vintage, although I'm not aware
of any such thing for the Model T.
On Apr 27, 2015 12:11 PM, "Andrew Roach" <ajroac...@gmail.com> wrote:
That was immediately my other thought. A fido style Xbee/raspi BBS
network.
I know some kids at the local college who'd help me put it together,
if I could prove it was viable from a transmission power perspective.
On Mon, Apr 27, 2015 at 1:10 PM Andrew Roach <ajroac...@gmail.com>
wrote:
Yeah, I was expecting that the whip would give me a significantly
reduced range.
I'm going to order some and experiment. It'd be really neat to hack
a system like this together. 5 miles is my target (which would be 1/8 of the
max point-to-point range.
My concern is that I might be able to get 5 miles omni-LOS, but
that without a clear line of sight I'd be down to half a mile or so.
On Mon, Apr 27, 2015 at 12:54 PM MikeS <dm...@torfree.net> wrote:
The challenge in your project would probably be the antenna; it's
largely the 'directional' aspect of the antenna that gives you the
point-to-point distance and an omnidirectional whip would give you a
drastically shorter range.
Antenna height and any obstacles in the path are also major
factors affecting distance.
There's a pretty active long distance WiFi community out there;
here's a pair of Linksys WRT54Gs communicating over 300+ km:
http://ci-journal.net/index.php/ciej/article/view/487/402
Worth experimenting!
m
----- Original Message -----
From: Andrew Roach
To: Model 100 Discussion
Sent: Monday, April 27, 2015 12:19 PM
Subject: [M100] Xbee and m100
I have been reading about the Xbee Xtend 900MHz Pro.
This is a wireless serial modem with a transmission range of up
to 40 miles LOS (with a high gain directional antenna)
I'm not super familiar with RF, but I know there are a fair
number of Ham guys on the group.
If I was to build the proper circuits to connect the Xbee to my
PC and my m100, with an omnidirectional whip antenna, could I conceivably be
broadcasting a serial connection to a bubble of 5 miles, or so, around my home?
Does that sound possible?
If it is possible, then would it also be conceivable that I
could concoct some kind of router at the receiving end, and have other people
sharing this connection using m100s and HP-200LXs connected to these xbee
modules?
My mind is all aflutter.
