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Bluetooth connection to multiple devices
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Bluetooth connection to multiple devices
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Rookie
Joined: Fri Apr 26, 2013 3:21 pm Posts: 1 
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 Bluetooth connection to multiple devicesHi,
I'm trying to connect my brick to both my phone (or laptop haven't made up my mind yet) and another brick. Unfortunatelly when I'm trying to connect the second device, doesn't matter whether it's another brick or phone, the other connection gets disconnected or I get the "line busy" message. Any ideas what might be the reason for that? And how to solve it? A. |
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| Fri Apr 26, 2013 3:30 pm |
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Senior Roboticist  Joined: Wed Sep 28, 2011 10:13 pm Posts: 630 Location: If I told you, I'd have to kill you.
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Re: Bluetooth connection to multiple devices At a guess, I'd say that the phone needs to be the "master" and the NXT's as "slaves". That would mean that the phone has to receive and send the messages that the NXTs would normally be sending directly to one another.
_________________ A.K.A. inxt-generation Self-proclaimed genius, and future world dominator. My Brickshelf Folder "Don't they teach recreational mathematics anymore?" - The Tenth Doctor Bow down to Nikola Tesla, King of the Geek Gods. |
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| Mon May 06, 2013 2:41 pm |
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Expert  Joined: Fri Nov 02, 2012 12:07 am Posts: 163 Location: California, USA
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Re: Bluetooth connection to multiple devices My best guess is that the NXT can only handle 3 NXT device, and only 1 Other device at one time. I really don't know.
 _________________ string Robored = "Awesome" ~~Neil Balch~~ |
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| Sun Jun 02, 2013 8:56 pm |
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Professor  Joined: Sat May 18, 2013 1:24 pm Posts: 272 Location: Olympia, WA
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Re: Bluetooth connection to multiple devices I don't think you can daisy chain NXTs... Although you can do that with EV3s
 But what you can do is connect both to a computer  _________________ FTC Team 6424, the 'Oly Cow - Chief programmer. FRC Team 4450, Olympia Robotics Federation (ORF). and also quadrotors. Quadrotors! |
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| Mon Jun 03, 2013 12:05 am |
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Expert Joined: Fri Nov 02, 2012 12:07 am Posts: 163 Location: California, USA
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Re: Bluetooth connection to multiple devices
Why not?  _________________ string Robored = "Awesome" ~~Neil Balch~~ |
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| Mon Jun 03, 2013 7:39 pm |
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Professor Joined: Sat May 18, 2013 1:24 pm Posts: 272 Location: Olympia, WA
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Re: Bluetooth connection to multiple devices Well, there was a comparison article between NXTs and EV3s which mentioned that you couldn't daisy chain NXTs... I think it's because you need to have capabilities to filter messages/packets and it just complicates things.
_________________ FTC Team 6424, the 'Oly Cow - Chief programmer. FRC Team 4450, Olympia Robotics Federation (ORF). and also quadrotors. Quadrotors! |
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| Mon Jun 03, 2013 9:33 pm |
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Expert
Joined: Thu Sep 29, 2011 11:09 pm Posts: 184 Location: Michigan USA
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Re: Bluetooth connection to multiple devices Because they aren't designed for it. The EV3 has USB host, but the NXT doesn't.
You can make a large wired NXT network using RS485 though. _________________ Matt |
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| Mon Jun 03, 2013 9:33 pm |
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Expert Joined: Fri Nov 02, 2012 12:07 am Posts: 163 Location: California, USA
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Re: Bluetooth connection to multiple devices Ok, Thanks
_________________ string Robored = "Awesome" ~~Neil Balch~~ |
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| Mon Jun 03, 2013 9:35 pm |
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