 | | Another awesome video of a LEGO sumo robotic event
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Hello, At DivX we like to play with LEGO, we specifically like Autonomous LEGO Sumo Robot fights, few of us have put together a multi events championship and we are filming it in HD. We just published the round 3 of the championship, check it out it (...) (18 years ago, 9-Apr-07, to lugnet.robotics) !
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| | Re: A Technic Train
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Nifty work there! It definetly looks fun, and makes me want to get some of those wheels. Without a differential, does it suffer on curves(1)? The only work around I can think of would be to only power one side of each axle, or put the gearing the (...) (18 years ago, 8-Apr-07, to lugnet.trains, lugnet.technic, lugnet.robotics, FTX)
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| | A Technic Train
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The new Lego remote-controlled (RC) trains use train wheels with Technic axle holes (only in the wheels connected to the motor, unfortunately). This creates an opportunity to power a train using essentially any Technic or Mindstorms motor, not just (...) (18 years ago, 8-Apr-07, to lugnet.trains, lugnet.technic, lugnet.robotics, FTX) !
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| | NXTRC: Using Bluetooth with NXT under Linux.
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Hi, I wrote a program that allows to communicate with a NXT brick under Linux using a Bluetooth link. With this program you can upload and download programs run them and other stuff. You can find more info and get the source at (URL). Our site is (...) (18 years ago, 6-Apr-07, to lugnet.robotics.nxt, lugnet.robotics)
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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 (...) (18 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 (18 years ago, 2-Apr-07, to lugnet.robotics)
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| | Re: Infrared protocol of the RC trains?
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(...) Perhaps this one? (URL) folks, I saw NOTHING ELSE on the boards. And it is before midnight) Best Regards, Paul Sinasohn (18 years ago, 2-Apr-07, to lugnet.robotics)
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| | Re: I need help with a method in my class RADAR
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Hi Guys, At the end, I finished the class. I read some useful calculus from Krystian Majewski, (URL) source code is here: (URL) abrazo (18 years ago, 1-Apr-07, to lugnet.robotics)
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| | Re: I need help with a method in my class RADAR
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Currently, My methods runs, but the algorithm doesn run well; //Import NXJ Packages import java.util.*; import lejos.nxt.*; import javax.microedition.l....Graphics; /* NXT LCD Dimensions: Width: 100px; 0-99 -> 50 Height: 64px; 0-63 -> 32 */ public (...) (18 years ago, 1-Apr-07, to lugnet.robotics)
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| | I need help with a method in my class RADAR
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Hello guys, Yesterday, started to program with new NXJ realease. Currently I am developing a Radar Interface using Hitechnics Compass Sensor and Ultrasonic Sensor. I need your help with 2 methods: public static int getCoordenateX(int angle,int (...) (18 years ago, 1-Apr-07, to lugnet.robotics)
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| | Infrared protocol of the RC trains?
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Is there any information on the infrared protocol that is used by the RC Trains? (18 years ago, 1-Apr-07, to lugnet.robotics, lugnet.trains)
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| | Java for NXT
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The second alpha release of leJOS NXJ is now out - download from (URL) is now preliminary support for I2C (including the Ultrasonic sensor), Bluetooth, and Sound. Motor and navigation support is improved. This release still runs in RAM with the NXT (...) (18 years ago, 31-Mar-07, to lugnet.robotics)
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| | Re: NXC/NBC release news
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(...) The standard NXT firmware has a bug in the replace opcode which makes it impossible to use with multi-dimensional arrays (or ragged arrays of arrays). I have fixed this bug and submitted the code to folks at NI and LEGO for possible inclusion (...) (18 years ago, 30-Mar-07, to lugnet.robotics)
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| | Re: NXC/NBC release news
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Hi, Sorry for asking a naive question but I have been trying to create and manipulate an array of strings in NXC without much success. Here is the little test program that I use: #include "NXCDefs.h" task main() { string sarr[]; ArrayInit(sarr, (...) (18 years ago, 30-Mar-07, to lugnet.robotics)
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| | Re: LEGO Mindstorms NXT - Robotics based Electronics
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(...) Hi Don, Thank you for your contribution in this area! I am an Electrical Engineer by education, but I went down the Software Engineering path long ago. I tinkered a little with electronics when I was younger, did some TV repair work and (...) (18 years ago, 30-Mar-07, to lugnet.robotics)
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| | LEGO Mindstorms NXT - Robotics based Electronics
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As most of you know I've been exploring ways to revitalize electronics education via this blog and teachings at Lawrence Tech University and now ITT Technical Institute.What saddens me is the days of building electronic circuits on breadboards or (...) (18 years ago, 29-Mar-07, to lugnet.robotics)
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| | Re: Enhanced standard NXT firmware
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(...) That's great news, David. I'm glad that you are having success using the new CommExecuteFunction system call. I haven't had a chance to test it at all yet personally but I was very confident that it would just work seeing as how exposing it (...) (18 years ago, 28-Mar-07, to lugnet.robotics.nxt.nxthacking, lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Enhanced standard NXT firmware
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"John Hansen" <afanofosc@comcast.net> wrote in message news:JF0sGr.M2w@lugnet.com... (...) implement (...) big snip Great job John. And thank you especially for CommExecuteFunction. I couldn't believe that Lego didn't allow a way to make a Bluetooth (...) (18 years ago, 28-Mar-07, to lugnet.robotics.nxt.nxthacking, lugnet.robotics, lugnet.robotics.nxt)
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| | Re: About velocity.
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(...) You can push the gearing still higher - 1:1 isn't the upper limit. But the trick with gearing is to match the gearing to the torque that the motor provides - and to use as few stages of gearing as possible. If 1:1 gearing is optimal - then (...) (18 years ago, 25-Mar-07, to lugnet.robotics)
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| | About velocity.
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First, I'm a beginner. So it will be very easy question for you guys. I have to make a lego robot with RCX model as fast as it possible. I just can use two motors and 4 wheels. It means I can use only a 'driving base'. I made gear ratio for 1:1, and (...) (18 years ago, 25-Mar-07, to lugnet.robotics)
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