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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 (...) (19 years ago, 5-Jan-06, to lugnet.robotics)
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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 (19 years ago, 5-Jan-06, to lugnet.robotics)
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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 (...) (19 years ago, 5-Jan-06, to lugnet.robotics)
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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 (19 years ago, 5-Jan-06, to lugnet.robotics)
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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 (19 years ago, 5-Jan-06, to lugnet.robotics)
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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). (...) (19 years ago, 5-Jan-06, to lugnet.robotics)
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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 (19 years ago, 6-Jan-06, to lugnet.robotics)
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| | Re: mindstorms NXT
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(...) will that be before Aug 2006? (19 years ago, 6-Jan-06, to lugnet.robotics)
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| | Re: mindstorms NXT
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(...) Ask the guy with the keyring. (19 years ago, 6-Jan-06, to lugnet.robotics)
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| | Re: mindstorms NXT
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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. (...) (19 years ago, 6-Jan-06, to lugnet.robotics)
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| | Re: mindstorms NXT
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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 (...) (19 years ago, 6-Jan-06, to lugnet.robotics)
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| | Re: mindstorms NXT
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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 (...) (19 years ago, 6-Jan-06, to lugnet.robotics)
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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 (19 years ago, 7-Jan-06, to lugnet.robotics)
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(...) Well, I stand corrected. They look just like RJ11, yet they are not. Oops. >_< William. (19 years ago, 7-Jan-06, to lugnet.robotics)
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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 (...) (19 years ago, 7-Jan-06, to lugnet.robotics)
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| | Re: mindstorms NXT
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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 (...) (19 years ago, 7-Jan-06, to lugnet.robotics)
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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. (...) (19 years ago, 7-Jan-06, to lugnet.robotics)
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(...) I posted this information earlier: (URL) (19 years ago, 7-Jan-06, to lugnet.robotics)
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(...) Here is a sample of the DEC RJ12 connector: (URL) like the same connection. -Rob A> (19 years ago, 8-Jan-06, to lugnet.robotics)
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(...) Except the new Lego connector has the latch on the opposite side I think. JB (19 years ago, 8-Jan-06, to lugnet.robotics)
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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 (19 years ago, 8-Jan-06, to lugnet.robotics)
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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) (...) (19 years ago, 8-Jan-06, to lugnet.robotics)
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