The Firmata protocol is built around a one device connection (it was written for Arduino-USB), so having multiple devices sending their data over a single serial port won't work with the Firmata protocol.
I seem to recall that Xbees can send on different channels. If so, I think the easiest thing to do is to have one xbee receiver per arduino, each on its own channel, and therefore one serial port per xbee.
If you want to only have one receiver, you'll have to create your own protocol. Perhaps an easy way to do that would be to wrap the existing Firmata protocol with some identifier of which arduino is came from.
You could also look at the xbee object in the pure-data svn, its in externals/io/xbee. But that also means no Firmata.
.hc
greetings. i was wondering, any insight on taking the data from 3 arduinos running firmata and dumping them, using xbee trancievers, to a single comport in in pure data?
my project uses 3 xbee "transmitter" nodes which communicate directly with its own xbee basestation"reciever" at my computer. this works but i seek to refine the system to have one basestation xbee that will recieve all of the data from the 3 nodes. from what i understand of this process, i need to add a tag like "left" in the arduino code" then parse that data on the computer end. but it seems as if this will break the arduino object.
my options, i feel, are to try to either add the tag, parse the data in pure data before the arduino object and somehow send the parsed data to 3 instances of the arduino object or to attempt to rewrite the arduino firmaware and the pd recieving abstraction since i dont foresee the hardware configuration changing all that much. insight?
cheers,
Onyx
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