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1  Using Arduino / Networking, Protocols, and Devices / Re: RSSI in ad hoc network with WiFly on: March 04, 2013, 04:04:49 am
Yes I know that it's not a reliable solution guessing the distance of a wifi node by its RSSI, in fact we (it's an univeristy project) will probably provide the arduinos maybe with some gps or something else that tells us the position of the devices (any suggestions here?), but as first experiments we want to do this with the RSSI trying them in a small plane area without physical barriers.
By the way, even if I can know the exact position of the wifi nodes, I also need they know the RSSIs of each others, because what we are trying to do is to extend a wifi network of arduinos (so they'll have a robot too), and I am thinking that with the RSSIs I can have a bound of how much the arduinos can drive away by each other, without breaking the network (if the RSSI of my closest one decreases too much, I can't go further).

Thanks.
2  Using Arduino / Networking, Protocols, and Devices / RSSI in ad hoc network with WiFly on: March 01, 2013, 06:01:28 pm
Hello everyone, I am working with arduino UNO and the WiFly module ( precisely this one ).
I'd want to setups a wifi ad-hoc network of arduinos, where every one knows the RSSI of each others. This because I need that every wifi node could guess the distance of the other ones (of course without physical barriers between them).
I have started creating the ad hoc network from my arduino and connecting two wifi end point (just two wifi cards from my pc) with it.
I have seen that the WiFly module provides the command "show rssi" that works properly but only from one end point at once: if I connect one card to the arduino and I call "show rssi" many times, it gives me the correct rssi from the card that I have just connected, but when I connect the second one and from the arduino I call "show rssi" many times, it gives me the rssi from this second one all the times.
If I disconnect and reconnect again the first card to the arduino, with "show rssi" I get the rssi from the first card (so the just connected one).
You can see that I am able to connect them with the arduino, send and get packets to/from the network, and get the correct rssi from the wifi cards, but I can't find a way to distinguish them.
Now I am guessing if what I need is feasible and what happens in the network when I connect/reconnect a wifi card in the ad-hoc network, because the arduino seems like to "switch" the card for the rssi retrieval.
Can someone help me?
Thanks.
3  Topics / Home Automation and Networked Objects / Re: Wifly UDP parsing on: December 19, 2012, 08:39:15 am
Hello Briwil, could I ask you the whole source code or at least the setup part of this program? Because I can't figure out how to setup my arduino with wifly to receive udp packets.

Thank you,
Butcher
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