 | | lejos on UBUNTU linux?
|
|
Hi, I'm trying to build the lejos release on UBUNTU linux and I get the following error. Any help appreciated. Thanks, Ted pawlicki@robotnik:~/lego/build$ ant Buildfile: build.xml clean: [echo] saving existing files to .bak files libnxt: [taskdef] (...) (18 years ago, 13-Mar-07, to lugnet.robotics)
|
| |
| | Re: Robot events at BrickFest™ 2007
|
|
Ooh, NXT-Sumo! David, I sure hope you'll be running your "Getting to know the NXT" breakout session BEFORE the sumo contest is held! My NXT remains sealed and unopened on a shelf in my Lego room. I'll bring it, and maybe I'll learn enough to be (...) (18 years ago, 13-Mar-07, to lugnet.events.brickfest, lugnet.robotics, FTX)
|
| |
| | Re: TachoSpeed.nqc
|
|
(...) The question you need to answer for yourself is this: Do I want my robot to to potentially execute both if blocks in sequence or do I only want the second if block to execute if the first condition is known to be false? If you only want the (...) (18 years ago, 13-Mar-07, to lugnet.robotics)
|
| |
| | Re: TachoSpeed.nqc
|
|
(...) For the RCX wait times are in 1/100 of a second. Is that the same for the Cybermaster? If so the reverse and turn times are a little short (as well as the motor ramp up period). I could see how it would be difficult to notice the robot backup (...) (18 years ago, 13-Mar-07, to lugnet.robotics)
|
| |
| | Re: TachoSpeed.nqc
|
|
(...) Sorry. I meant to say 'the brick never executes the if statement'. (...) I don't see 1) how I could make an if/else statement or 2) what the benefit would be. 1) If I make an if/else statement isn't 'else' executed always if 'if' is not true? (...) (18 years ago, 12-Mar-07, to lugnet.robotics)
|
| |
| | Re: TachoSpeed.nqc
|
|
(...) You assumed correctly. Without the wait the if statement is always executed immediately. I see what you mean: by taking the wait out of the start of the loop the sensors are checked more frequently. That doesn't solve the riddle though, (...) (18 years ago, 12-Mar-07, to lugnet.robotics)
|
| |
| | NXT now has atan2 function block
|
|
Download atan2 (and atan, sin, cos, sqrt blocks) at www.convict.lu/Jeune...sIntro.htm for NXT-G. Please report any bugs. (18 years ago, 12-Mar-07, to lugnet.robotics)
|
| |
| | Re: TachoSpeed.nqc
|
|
(...) I don't really understand what you mean when you say "the brick doesn't do anything". Can you be more specific? (...) They will both be executed in sequence if at the time the second if statement reads the TachoSpeed setting on OUT_L it (...) (18 years ago, 12-Mar-07, to lugnet.robotics)
|
| |
| | Re: TachoSpeed.nqc
|
|
Doesn't this make more sense. (...) The way it was written you hardly ever checked the TachoSpeed because most of the time was spent in the Wait(20). I assume the Wait is in there to allow the robot to get up to speed before you start checking for a (...) (18 years ago, 12-Mar-07, to lugnet.robotics)
|
| |
| | Re: TachoSpeed.nqc
|
|
(...) I 've done just that, but the problem I describe persists: When the TachoSpeed reported by watching the brick is around 57, the brick doesn't do anything if the response value is set to 62. It does at 66 or 67 but that also makes it impossible (...) (18 years ago, 12-Mar-07, to lugnet.robotics)
|
| |
| | Re: TachoSpeed.nqc
|
|
(...) The problem is almost certainly that your program only runs for about 2 tenths of a second. If you want the program to run forward continuously and execute a special behavior if at some point during the execution of the program the TachoSpeed (...) (18 years ago, 11-Mar-07, to lugnet.robotics)
|
| |
| | Re: NXT Turkey MOC
|
|
Really nice! I recently built the original bug from the descriptions in the "10 Cool Lego Mindstorms RIS 2 Projects' book but the program files that come with it are all lsc files. I'm having a hard enough time learning NQC to try to make sense of (...) (18 years ago, 10-Mar-07, to lugnet.robotics)
|
| |
| | TachoSpeed.nqc
|
|
I'm trying to write a simple routine that uses the TachoSpeed value to see if my Cybermaster has run into something. I'm trying this on tiled floor, by making the bot with tank threads run into the wall, but only very occasionally does it actually (...) (18 years ago, 10-Mar-07, to lugnet.robotics)
|
| |
| | Robot events at BrickFest™ 2007
|
|
There will be a number of interesting robotic activities at (URL) BrickFest™ 2007>, which is fast approaching. Don't forget, if you haven't registered yet but wish to attend, the preregistration deadline is March 15th. Here's a summary of the (...) (18 years ago, 10-Mar-07, to lugnet.events.brickfest, lugnet.announce, lugnet.events, lugnet.fun.community, lugnet.robotics, FTX) !
|
| |
| | Real Robots Article
|
|
I've just posted an article published in this month's Electronic Design Magazine about the LEGO Mindstorms NXT and Real Robots on my Blog (URL).For design inspiration there's a small video clip of a Handy Cricket Line Following robot for your (...) (18 years ago, 10-Mar-07, to lugnet.robotics)
|
| |
| | NXT Turkey MOC
|
|
To learn studless construction and building with the NXT I have been reworking all my RCX robot designs. After what, almost a year now, I think I'm finally getting it. This week was the first time I successfully designed a NXT robot in my head (...) (18 years ago, 9-Mar-07, to lugnet.robotics) !
|
| |
| | Re: IR tower problems on a laptop with NQC
|
|
(...) Jordan, I only have one suggestion that may, or may not be useful. I'd suggest you try a fresh battery in the tower. I know you said it works on another PC. Sorry, that's the best I can do. :) Steve (18 years ago, 9-Mar-07, to lugnet.robotics.rcx, lugnet.robotics, lugnet.robotics.rcx.nqc)
|
| |
| | IR tower problems on a laptop with NQC
|
|
I have a used Dell Inspiron 8200 laptop that is old enough to have a serial port. I'm trying to use a serial port IR tower to program an RCX and am having problems. When I plug in the tower the green light turns on immediately, which AFAIK is not (...) (18 years ago, 9-Mar-07, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.nqc, FTX)
|
| |
| | Microsoft Robotics Studio
|
|
Has anyone had any luck with the Microsoft Robotics Studio with the RCX / RIS 2.0 ??? I have been able to write a program that uses the direction control to control a basic roverbot moving left/right forwards/backwards and another program that (...) (18 years ago, 7-Mar-07, to lugnet.robotics, lugnet.robotics.rcx)
|
| |
| | Re: Power Functions Tower Crane
|
|
(...) Yes ;o) (...) I have yet to perform the measurements, but I can tell you that the big motor is really powerful (comparable to NXT motor), with a rotation speed around 200 rpm. The other one is quite good too, should be significatively more (...) (18 years ago, 7-Mar-07, to lugnet.robotics)
|
