 | | NXT Bluetooth Message Performance
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Any have any experience with communicating over Bluetooth with 'master' connected to more than one NXT? If so, can you share any performance results? My guess is that it is very slow. My expectation is that when there is one master NXT and two slave (...) (19 years ago, 4-Apr-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: IR Problems
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Hi Tom, I tried to send you a private mail, but the email address I have doesn't work anymore. Could you give me the new one? -Claude (19 years ago, 3-Apr-07, to lugnet.robotics.rcx)
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| | NXT-to-NXT Messaging
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The following is a good topic for this list. It deals with NXT-to-NXT messaging. It's based on an original post in the "nxtasy" forums. There's lots of room for improvement / enhancement in the NXT-to-NXT messaging. Especially when more that two (...) (19 years ago, 2-Apr-07, to lugnet.robotics.nxt.nxthacking)
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| | RE: IR Problems
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Elizabeth is quite right. It's easy to get collisions on the IR "bus" if two devices are sending (or replying) simultaneously. What I've done in the past with two RCXs is define one RCX as primary that is periodically (every 100 to 250 milliseconds (...) (19 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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| | RE: IR Problems
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RCX IR does not require direct line of sight. All sorts of reflections will work. Especially if you're in a "smallish" (bedroom, home office) room. The RCX firmware always has the IR turned off. "Wait for mail" and "send mail" is just a higher (...) (19 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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| | RE: IR Problems
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IR communication is no where near the reliability like a tcp/ip. You can easily lose a message ... so program must be either extremely simple one way communication. The sender should be programmed to handle message loss. What I had the kids done was (...) (19 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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| | Re: IR Problems
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(...) Thanks for your reply. I had to return the 1.0 RCX and motor back to school today. Those things are like gold. The 1.0 faces the 2.0 and is not in direct line of sight of the tower. The 1.0 is just to the side of the tower. I think my problem (...) (19 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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| | Re: NXC/NBC release news
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Hi John, Thank you for your reply. I will try your suggestion and let you know how it goes. Regards, Davis (...) (19 years ago, 2-Apr-07, to lugnet.robotics)
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| | OK this is pretty cool
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(URL) LEGO, but maybe could provide inspiration for NXT builders... ROSCO (19 years ago, 2-Apr-07, to lugnet.robotics)
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| | RE: IR Problems
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Are you sure your problem isn't interference? How did you "lock out" the RCS 1.0 from receiving (and responding) to the direct commands? You have two RCXs turned on and sending direct commands from the PC. They will both try to respond to the (...) (19 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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