 | | Re: mindstorms NXT —Ram Meenakshisundaram
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| | | OK MUP members, spill the beans :-) We know who you are :-) How do you connect multiple motors now? Also, what type of processor is it, speed, and memory?? Thanks, Ram PS: I REALLY WANT ONE! (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | Re: mindstorms NXT —Brian Davis
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| | | | | (...) Since the known MUP members haven't added a whole lot yet, I suspect that the NDA mentioned in the Wired article is (sadly) still in effect. But still, there's a lot to see in those juicy pictures and the wealth of specifications in the LEGO (...) (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | Re: mindstorms NXT —Mr S
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| | | | | | Well, I suppose that the speculation will begin any moment now, but a digital I/O with 6 lines could be enough for power, ground, tx, rx, clock, and signal ground.... wonder what type of interface it actually is? Bluetooth is good! Not as much range (...) (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —Ray Sanders
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| | | | | | (...) I *hope* that they use of BT will allow one control source (like my iBook ;) to control multiple NXT units simultaneously. The mind boggles ! Ray (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | Re: mindstorms NXT —John Barnes
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| | | | | (...) The NDA is still firmly in place. And they know where we live ;) But, I am very interested by your multiple motor question however. Why do you need to connect multiple motors? JB (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | Re: mindstorms NXT —John Gerlach
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| | | | | | | (...) To make multiple things move! Duh! (that's a joke, people!) I'd like to see if I could hook one of these things up to 'standard' 9volt stuff - lights, sound elements, technic motors, *trains*... JohnG, GMLTC (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | Re: mindstorms NXT —Ram Meenakshisundaram
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| | | | | | | (...) How would you create a rover-based robot with just three motors? I want to design more complex rovers other than the two-wheeled plus caster designs. Something like the shrimp for instance. The old rcx allows you to connect multiple motors to (...) (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | | | Re: mindstorms NXT —Ram Meenakshisundaram
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| | | | | | | | | (...) Hope its possible to create an I2C port using the sensor ports. Its a shame they didnt create an I2C port for daisychaining sensors. Or is the sonar port a I2C port.... Ram (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | Re: mindstorms NXT —Chris 'Xenon' Hanson
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| | | | | | | | | | (...) My conclusion that the bus is multipurpose stems from the evidence that there is a speed sensor (optoencoder of some sort?) on the motors. I presume that means that the motor ports have both output (motor control) and input (sensor feedback). (...) (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | | Re: mindstorms NXT —John Barnes
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| | | | | | | | | | (...) I do hope so :) As the wired article pointed out, we didn't get everything we asked for. But there are features we did ask for and got. So just as soon as the shackles come off .... JB (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | | Re: mindstorms NXT —Chris Magno
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| | | | | | | | | | (...) will that be before Aug 2006? (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | | Re: mindstorms NXT —John Barnes
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| | | | | | | | | | | (...) Ask the guy with the keyring. (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | | Re: mindstorms NXT —Larry Pieniazek
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| | | | | | | | | | (...) Stop hassling the "Sensor Sensei" ... Grin. (I bet it really gets you going that Steve got a connect4 bot into his pic. No, more seriously I think we all want to know as soon as people are allowed to tell. (URL) is pretty darn cool news. (...) (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | | | | Re: mindstorms NXT —John Barnes
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| | | | | | | | | (...) So you parallel motors on the same port to do different things? As opposed to using a single motor mechanically coupled to different things? Is this as a result of a single motor not being powerful enough? Or because the two paralleled motors (...) (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | Re: mindstorms NXT —Ross Crawford
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| | | | | | | | | | (...) Or they are far enough apart or in a difficult arrangement so that a mechanical link is impractical. (eg: moving WRT each other.) ROSCO (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | | Re: mindstorms NXT —Ram Meenakshisundaram
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| | | | | | | | | | (...) Right. You cant always do things mechanically as it would complicate the design and might be too far apart. Also, sometimes a single motor doesnt have enough power, so doubling it up helps.... Ram (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | | | Re: mindstorms NXT —Rob Hendrix
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| | | | | | | | (...) I agree with this part of your statement. I'd like to be able to connect other things besides motors to the outputs, and I've noticed that so far it appears as if you won't be able to daisy chain things like touch sensors on the inputs. That's (...) (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | | | | | Re: mindstorms NXT —William Grant
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| | | | | | | | -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 (...) Those connectors aren't proprietary! They are common RJ11 phone plugs/sockets! They can be got at any electronics store, so they are much easier to get than the previous ones. Is this Lego being (...) (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | | | | | Re: mindstorms NXT —John Barnes
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| | | | | | | | | (...) Can you possibly go visit one of these stores, confirm that the necessary offset latch is on the correct side and provide us with part numbers. This is really important information! JB (18 years ago, 7-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | Re: mindstorms NXT —Mark Bellis
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| | | | | | | | | | (...) I posted this information earlier: (URL) (18 years ago, 7-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | | Re: mindstorms NXT —Rob Antonishen
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| | | | | | | | | | (...) Here is a sample of the DEC RJ12 connector: (URL) like the same connection. -Rob A> (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | | Re: mindstorms NXT —John Barnes
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| | | | | | | | | | (...) Except the new Lego connector has the latch on the opposite side I think. JB (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | | Re: mindstorms NXT —Rob Hendrix
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| | | | | | | | | | "John Barnes" <barnes@sensors.com> wrote in message news:Isr07J.1rvn@lugnet.com... (...) I'm with JB on this one. The press release photos (unless they are backwards!!) clearly show that clip being on the opposite side. -Rob www.brickmodder.net JB (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | | Re: mindstorms NXT —Mark Bellis
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| | | | | | | | | | (...) On brightening up a picture looking into the ports, I see you're right about where the connector key is. Looking on Google, I found that other people cut the key off normal RJ12 connectors in order to use them with RJ12 DEC MMJ sockets: (URL) (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | | | | | Re: mindstorms NXT —William Grant
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| | | | | | | | | (...) Well, I stand corrected. They look just like RJ11, yet they are not. Oops. >_< William. (18 years ago, 7-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | Re: mindstorms NXT —Ignacio Martinez Vazquez
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| | | | | | | | | | I bet they are regular motors, but the NXT senses back EMF to know how fast the motor is going. I wonder why they are so bulky, then... Also, stupid request: I hope the buttons on the NXT don´t take too much strength, because I don´t want to tear (...) (18 years ago, 7-Jan-06, to lugnet.robotics)
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| | | | | | | | | | | | Re: mindstorms NXT —Ignacio Martinez Vazquez
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| | | | | | | | | | Umm sorry, I gotta work on my writing. Disregard the repetition of "also". Also :P, I wonder how long till they make a C language for NXT. I think there´s a thread on this I haven´t read. (...) (18 years ago, 7-Jan-06, to lugnet.robotics)
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| | | | | | | | | | Re: mindstorms NXT —Jonathan Wilson
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| | | | | | | | (...) Wrong. They are not RJ11. They appear to be RJ12 (with 6 wires) with an offset catch thing Someone said they might be the same as an old DEC connector but someone else has said that the DEC connector has the catch on the opposite side to the (...) (18 years ago, 7-Jan-06, to lugnet.robotics)
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| | | | | | | Re: mindstorms NXT —Simon Bogaert
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| | | | | | Well, 3 motors/output ports never were enough... (at least, when the bot wasn't big enough for multiple RCX's, or if you don't own more than one) I guess that's something that won't change easily... :) Off course, there's all sorts of workarounds to (...) (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —John Barnes
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| | | | | | (...) If you look at the picture of the new motor, you may notice that the orange disk with the cross axle hole in the center appears to be a single piece with four pin holes in addition. This might give the impression that the available torque may (...) (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —Ross Crawford
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| | | | | | (...) Sure, but that's only a benefit if you're attaching it direct to shatever needs the high torque. If you need some kind of transmission (which will probably be often with such big motors) the advantage is lost. ROSCO (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —John Barnes
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| | | | | | (...) This is, of course, true. However, I would point out the general construction of rear engined race cars typically include the transmission and engine as a single unit which also forms part of the vehicle structure. With the apparent (...) (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —Simon Bogaert
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| | | | | | | Personally, I think of the four extra "technics" holes as an added plus, not exactly a necessity... But then again, I'm not as seasoned a builder as you all are... :) Now, when you're talking car-like vehicles, I'd like to point some issues. First (...) (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —Simon Bogaert
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| | | | | | That's what I've been asking before... ;) Since USB is completely host-centric, a simple client device (such as the lego nxt) cannot directly speak to another client device. You'd really need a USB host, being most commonly a home computer. I know (...) (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | Re: mindstorms NXT —Matthew Ruschmann
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| | | | | (...) If these lines are purely digital communication lines, adding additional motors will be easy via a multiplexor attached to one of the RJ11 output. Building the multiplexor (or any custom sensors) may not be as easy though. It looks like you (...) (18 years ago, 5-Jan-06, to lugnet.robotics)
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| | | | | Re: mindstorms NXT —Mike Walters
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| | | | I'm embarrassingly new to Mindstorms. My first Mindstorms system (RIS 2.0) was purchased just two weeks ago. I'm still very much a novice. With that in mind...I have a few observations/questions of my own: 1) I'm stunned by this announcement! After (...) (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | Re: mindstorms NXT —Timothy Carl Buchheim
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| | | | | (...) My hope is that this is some sort of bus system which will allow someone (possible LEGO itself) to make a "hub" which you could use for this. There are three ways to do this: the hub could do the logic operations itself (perhaps with a switch (...) (18 years ago, 6-Jan-06, to lugnet.robotics, FTX)
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| | | | | | | Re: mindstorms NXT —Timothy Carl Buchheim
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| | | | | | (...) I was just thinking .. the rumors about this year's trains are that they'll be remote controlled battery-powered units (probably so LEGO can use cheaper track without the metal conductors) .. those would fit the bill exactly. Bluetooth (...) (18 years ago, 7-Jan-06, to lugnet.robotics, FTX)
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| | | | | | | | Re: mindstorms NXT —John Barnes
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| | | | | | (...) Well, I am pretty sure the control for the trains is IR. That's what Jake said and that is what the little black bump is on the side of the trains. I am sure TLG will do their Manas type IR serial interface, with message packets at different (...) (18 years ago, 7-Jan-06, to lugnet.robotics, FTX)
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| | | | | | Re: mindstorms NXT —Brian Davis
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| | | | (...) Don't worry, that has nothing to do with you being new to all this - we all are! Well, all but a luckey few... (...) I doubt it will be completely abandoned. After all, the first thing I want is to kludge a way to interface a NXT with and RCX, (...) (18 years ago, 6-Jan-06, to lugnet.robotics)
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| | | | | | Re: mindstorms NXT —Rob Antonishen
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| | | | (...) I threw my name in as one of the 100 early testers (who here hasn't :) and one of the questions was on FLL involvement, and a willingness to write FLL documentation. That leads me to think that they are definitely considering extending the NXT (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | Re: mindstorms NXT —Brian Davis
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| | | | (...) The NXT FAQ addresses this question - it says that both the RCX and NXT will *both* be allowed in the 2006 FLL season. That should make for some very interesting decisions and comparisions. It also suggests to me that along with the MUPs we (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | Re: mindstorms NXT —dan miller
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| | | | | If they're looking to the future, I would expect it to be a digital bus, much like something my robo-club has been thinking about. It could be I2C or CANN-based, or proprietary (unlikely). Six wires makes sense -- ground, bi-directional signal (2 (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | | Re: mindstorms NXT —Titus Gabriel Petrut
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| | | | | | (...) I just saw Lego's definiton of a servo motor. It resembles a industry servo, not a hobby servo. In the hobby servo, the closed loop is done in the servo electronics, but in the industry servo, the closed loop is done in the controller. (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —dan miller
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| | | | | | (...) This all makes some sense, though it seems strange to put a digital board in the servos, but not do the control there. In any case, I think my first project will be to figure out how to use the USB port to connect the NXT to a more powerful (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —Kevin L. Clague
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| | | | | | (...) I was wondering if one could make a two port host device with its own power source (battries). It could be relatively simple, where one host port polls the device port of the NXT to find out if there is anything to do, and then the second host (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —John Barnes
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| | | | | | (...) So you are saying you have a sort of mini-host acting as a bridge between connected devices like a NXT and something else. That sounds like an interesting idea ..... I think one of the reasons why hosts are tricky and devices are easier is (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —Jason S. Mantor
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| | | | | | | John Barnes wrote: I was wondering if this might be (...) I think I have one : ) It's an HP Jornada 820. Runs CE from ROM, but people are busily hacking at getting Linux to run on it. It's a nice little machine and I suspect the perfect device to (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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| | | | | | | | Re: mindstorms NXT —Kevin L. Clague
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| | | | | | (...) Yes, this was what I was brainstorming of... (...) Yes, this is very true. If you always used A for the NXT then you'd still need device drivers for whatever is plugged into B. (...) Yes, as long as the WindowsCE has host capabilities. My (...) (18 years ago, 9-Jan-06, to lugnet.robotics)
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| | | | | | Re: mindstorms NXT —dan miller
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| | | | [apologies to Steve, I sent these to him instead of the list -- this is the only list I'm on that puts the last poster's email in the 'reply to' field] I've been playing with technics-dominated ideas for some time, but little things like this always (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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