 | | Re: NXT to NXT communication?
|
|
(...) John Barnes and others have been working on that. He has out a beta of a "Nxt Byte Code" (NBC) assembler, and he's dug into a *lot* of firmware and software details. See the following (& John's website) for more details. (URL) not as sure (...) (19 years ago, 4-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) Yes, that's a tough one... (...) I've played around with a few ideas using bluetooth. In addition to the NXT->NXT remote, I wrote a program for my Bluetooth enabled PDA using eVB. Jim Kelly actually has a screenshot in his blog (URL) under (...) (19 years ago, 4-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) Yes. NXT1 will be connected via connection 0 from NXT0 NXT1 will be connected via connection 1 to NXT2 NXT1 will be connected via connection 2 to NXT3 NXT1 will be connected via connection 3 to NXT4 NXT1 can send a message to connection 0,1,2, (...) (19 years ago, 4-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) Steve, your remote is pretty cool. It’s a great idea if you have more than one NXT. I checked with my purchasing manager (my wife) and I don’t think my request for capital expenditure will be approved for more than one NXT this year. With that (...) (19 years ago, 4-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) A little - the next question of course is: Can NXT1 be both slave (to NXT0) and master (to NXT2, NXT3, NXT4) at the same time? Or does that require sneaky protocol to switch between the 2? ROSCO (19 years ago, 4-May-06, to lugnet.robotics)
|
| |
| | Re: My First few NXT MOCs
|
|
(...) Dave (19 years ago, 4-May-06, to lugnet.robotics, FTX)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) Dave, I don't know a whole lot about BT (beyond the little I've found out because of this project), but your assessment is correct. The protocol is implemented according to BT spec, so all communication is done through master-slave (...) (19 years ago, 4-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) Ok after actually reading the other threads in this post, it looks like TLG decided to develop its own BT profile just for the NXT. The messaging mechanism described by Brian and Steve looks like it will allow direct slave-slave communication, (...) (19 years ago, 4-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) Quite muddy! Why only three connections and what about specification adherence? Are they trying to limit its potential applications or were they just trying to get out a production-ready implementation? In other words are there plans for an (...) (19 years ago, 4-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) I can't speak for the NXT, but knowing that it has BT, and should be adhering to the specs, then the answer would be yes. The master-slave communication is coordinated via time slots within a piconet. This would avoid message collisions. In (...) (19 years ago, 4-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) That's one possibility. (...) OK, that's a much better way of phrasing that :). The thing that's a little confusing (to me) is that means that if the NXT named "Ann" wants to communicate with one named "Ben", you can establish a BT connection (...) (19 years ago, 4-May-06, to lugnet.robotics)
|
| |
| | Re: Port types (Re: NXT to NXT communication?)
|
|
(...) Erm, can I clarify here; The digital sensor port which is part of the motor port is not the same as the digital port which is part of the main sensor ports. The two digital wires which are part of the motor port are input only, whereas the (...) (19 years ago, 3-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) So they could potentially be programmed to provide force or shudder feedback? (...) Yes, but I'm interested to know: Are these multiple connections available via the LEGO retail software, or did you program your pair some other way? It's just (...) (19 years ago, 3-May-06, to lugnet.robotics)
|
| |
| | Port types (Re: NXT to NXT communication?)
|
|
(...) Not exactly. There was talk about that early on. You can not use the sensor port to drive a motor, and you can not use the motor port to read an analog (old style) sensor. The hardware specs may have changed, so I may not be 100% on this, but (...) (19 years ago, 3-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) So you can use a motor port as a sensor input and/or use a motor as an input device (and vice-versa)? -Rob www.brickmodder.net (19 years ago, 3-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) The motors offer little resistance when used this way. However, there's something else which I think is kind of cool. If you look close, when I let go of the controller, the paddles return to the middle, and the car stops. Using just one block (...) (19 years ago, 3-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) Yep (at least that's one way to do it). I tried making a X-Y joystick, but the mechnical slop was more than I liked, so I've got one with two paddles and a thumbwheel (slightly different from Steve's) (...) Not too bad. The NXT motors are not (...) (19 years ago, 3-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) they when you do that? Also, I noticed at one point you scooted the controller closer to the car. Was that because it had lost the signal? What is the effective range, anyway? I also wonder what happens when you have more than two NXT bricks (...) (19 years ago, 3-May-06, to lugnet.robotics)
|
| |
| | Re: NXT Programming with Next Byte Codes
|
|
(...) The NQC compiler in some form or other is headed for NXT support but for a number of reasons I needed to produce a functional assembler first. Now that it is mostly complete I will be trying to shift gears and work on NQC. I will post several (...) (19 years ago, 3-May-06, to lugnet.robotics)
|
| |
| | Re: NXT Programming with Next Byte Codes
|
|
(...) Great news! I look forward to seeing more. Can you post some complete example programs? Also, is there a C syntax commandline alternative in the works? (19 years ago, 3-May-06, to lugnet.robotics)
|
