NXT programmable brick : 80


Robotics / NXT / 80	79 \| 81

Subject:	Re: NXT Robot Swarm at BrickFest -- featuring Bluetooth
Newsgroups:	lugnet.robotics.nxt
Date:	Sun, 13 Aug 2006 14:59:15 GMT
Viewed:	12833 times

Here's an idea of how to get more than 3 NXTs connected via Bluetooth (BT). It involves using a PC as a "relay point". I think standards allow up to seven simultaneous connections per BT device. The limitation to three connections on the NXT may be a function of the Bluecore hardware/firmware "module" that is used on the NXT. If I'm accurate on this, then it should be simple to write a PC based relay program that would accept up to seven NXT simultaneously connected via BT on the PC; whenver PC receives a message would forward it out on the other six connections. Hopefully the NXT "Fantom" driver on the PC supports multiple connections. Furthermore, I think you canhave multiple BT devices plugged into a single PC. So with three dongles, you could network 21 NXTs!

Message has 1 Reply:

		Re: NXT Robot Swarm at BrickFest -- featuring Bluetooth
(...) My problems with this solution are two-fold. First, NXT-G currently can't send anything back to the PC, as it's not running anything to get the NXT-G message structure (yes, folks could write this... almost certainly will. But likely not me). (...) (18 years ago, 13-Aug-06, to lugnet.robotics.nxt)

Message is in Reply To:

		Re: NXT Robot Swarm at BrickFest -- featuring Bluetooth
(...) I played around with this a little bit, trying to confirm what I've been told. It is possible to have an NXT connect as either a master or a slave, but not both at the same time. I'm sure this is true. Here's what I did: I took three NXTs with (...) (18 years ago, 13-Aug-06, to lugnet.robotics.nxt)

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