 | | Re: Using PF modes with mindsensors NRLink device
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I dont know the specifics but for a start try these: PF Protocol document: (URL) Posts here: (URL) (16 years ago, 13-May-08, to lugnet.robotics.nxt, lugnet.robotics)
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| | LEGO NXT Mechatronics Book Cover
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Hi All, I've posted an update on the book I'm writing titled, LEGO NXT Mechatronics. This book will get into how to create intelligent based machines and gadgets using the NXT as the core processor. Check out the cover of the book as well as some of (...) (16 years ago, 7-May-08, to lugnet.robotics.nxt)
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| | NXT Project Notes
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Hi Group, I've just posted some project notes on a book I'm writing on Mechatronics. The LEGO NXT will serve as the computing device for reading I/O as well as processing. I'll be posting chapters as they become available on my blog (URL)as well. (...) (16 years ago, 28-Apr-08, to lugnet.robotics.nxt)
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| | Neural Network for the NXT
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Two of my students created a Neural Network Manager for the NXT. You can receive sensor information from the NXT to a PC. The network is being trained on the PC and the software exports the trained network back to the NXT. There, the NXT can then (...) (16 years ago, 23-Apr-08, to lugnet.robotics.nxt)
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| | NXT Inventor's Guide Book Signing in Austin, TX
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On Saturday, April 19th, I'm having a book signing at a Barnes & Noble in Austin, Texas for my book The Unofficial LEGO MINDSTORMS NXT Inventor's Guide (No Starch Press, 2007). The signing will begin at 2PM, and I'll be bringing two robots with me (...) (16 years ago, 11-Apr-08, to lugnet.robotics, lugnet.robotics.nxt, lugnet.events, lugnet.loc.us.tx, FTX)
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| | Re: Two dimensional arrays in NXC
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|
(...) Hi Roger, yes, Java can do the job, but normally I prefer pbLua for all my NXT projects. It is completely operating system independant, you need a terminal only... From time to time, I like to play with NXC, which is available for most os'es (...) (16 years ago, 6-Apr-08, to lugnet.robotics.nxt)
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| | Re: Two dimensional arrays in NXC
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(...) Hi Christian, If you need 2 dimensional arrays and use OSX, Java is a possible answer. You can download it from http: lejos.sourceforge.net. It supports up to 8 dimensional arrays, the Java math library, multi threading, communications via (...) (16 years ago, 5-Apr-08, to lugnet.robotics.nxt)
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| | Re: Two dimensional arrays in NXC
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(...) Well, don't add the functionality on my account - I've redone my program a bit and now it doesn't need multi-dimensional arrays, and I think it's better this way anyways. Thanks for your help. Trevyn (16 years ago, 2-Apr-08, to lugnet.robotics.nxt)
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| | Re: Two dimensional arrays in NXC
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(...) OK, I'll publicly make my demand louder. OSX is a great enviroment for educators... oh heck with it, I want it for me, not my students :) (16 years ago, 2-Apr-08, to lugnet.robotics.nxt)
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| | RE: Two dimensional arrays in NXC
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Yes. It is currently a Windows only package. There's some, but not a lot, of demand for Mac version. -----Original Message----- From: news-gateway@lugnet.com [mailto:news-gateway...ugnet.com] On Behalf Of Christian Mock Sent: Monday, March 31, 2008 (...) (16 years ago, 1-Apr-08, to lugnet.robotics.nxt)
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| | Re: Two dimensional arrays in NXC
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(...) RobotC is for MS Windows only, isn't it ? Please let me know, if an OSX version is available. Thanks Christian (16 years ago, 31-Mar-08, to lugnet.robotics.nxt)
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| | Re: Two dimensional arrays in NXC
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(...) The stock firmware supports multi-dimensional arrays but there is a bug in the replace opcode which makes it impossible to replace an element in an array with more than one dimension. In NXC, due to the way the opcodes work in the standard (...) (16 years ago, 31-Mar-08, to lugnet.robotics.nxt)
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| | RE: Two dimensional arrays in NXC
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As an alternative, you might want to look at the ROBOTC solution. It fully supports two dimensional arrays. You can download a 30-day evaluation version from www.robotc.net. It's best to use the pre-release version (1.22 or higher) if you'll be (...) (16 years ago, 30-Mar-08, to lugnet.robotics.nxt)
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| | Two dimensional arrays in NXC
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Hello, I'm trying to use two dimensional arrays in NXC, like this: int onedarray[4]; int twodarray[4][4]; task main() { onedarray[2] = 1; twodarray[2][2] = 1; } I read that the stock firmware doesn't support them, so I got John Hansen's enhanced (...) (16 years ago, 29-Mar-08, to lugnet.robotics.nxt)
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| | light active mode vs inactive mode
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I am attempting to turn the reflective light on and off periodically. It works fine in RobotC. However, in Robolab, once it is turned off (via the robolab light sensor initialization - set the light on to "false"), it won't turn on again during (...) (16 years ago, 16-Mar-08, to lugnet.robotics.nxt)
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| | Using PF modes with mindsensors NRLink device
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|
Hi all, I am trying to use the different PF modes (PWM for instance) with my mindsensors NRLink. I tried adding new macros to PF.txt file without any sucess. This is the file I used. I updated this macro file in my NRLink with NXT-G and afterwars I (...) (16 years ago, 14-Mar-08, to lugnet.robotics.nxt, lugnet.robotics)
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| | motor port splitter?
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Looks like only Mindsensor provides port splitter for nxt motors. Unfortunately, this splitter will not allow independent control. I had this application which requires ita port to be attached to one NXT motor, and one RCX lamp (while the other two (...) (16 years ago, 10-Mar-08, to lugnet.robotics.nxt)
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| | Re: Nxtcom error #89
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Here is a shameless plug for Java .... The Lejos_NXT software system (aka NXJ) runs its defrag program every time a file is deleted from the file system. And the start up menu also shows on the LCD the amount of free flash (which,of course, is (...) (16 years ago, 9-Mar-08, to lugnet.robotics.nxt)
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| | Re: step-by-step tutorial leJOS and Eclipse
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Hey, Due to a complete redesign of the website, the tutorial URL was changed to: (URL) (16 years ago, 9-Mar-08, to lugnet.robotics.nxt)
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| | Re: Nxtcom error #89
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|
(...) Unfortunately, the standard firmware does not expose the ability to iterate through the files in the file system. You can do that with the enhanced NBC/NXC firmware, but even then the information you can get about a file is just its name and (...) (16 years ago, 7-Mar-08, to lugnet.robotics.nxt)
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| | Re: Nxtcom error #89
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(...) Thanks, John -- this agrees with what Dave found as well. Makes sense. (...) Thanks again. What would be really neat is a utility that can draw a memory map, showing what is stored where. I haven't seen such a thing since my Apple II days, but (...) (16 years ago, 6-Mar-08, to lugnet.robotics.nxt)
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| | Re: Nxtcom error #89
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(...) According to the LEGO Mindstorms NXT Communication protocol.pdf that is part of the Bluetooth Developer Kit, your error code (89) means "No linear space". That means all the remaining space on your NXT is fragmented so there is not enough (...) (16 years ago, 6-Mar-08, to lugnet.robotics.nxt)
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| | Re: Nxtcom error #89
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OK, for the archives: I got an answer from Dave Baum (author of nxtcom). He says that error #89 indicates memory fragmentation -- even though my NXT had plenty of free RAM in total, there was no single contiguous block big enough to hold the new (...) (16 years ago, 6-Mar-08, to lugnet.robotics.nxt)
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| | Re: Nxtcom error #89
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|
To follow up my own post: I've since verified that I have 45K free on the NXT, and the file I'm installing is under 13K. I've also restarted both my Mac and my NXT, and still get that mysterious error 89. After more experimentation, it does appear (...) (16 years ago, 5-Mar-08, to lugnet.robotics.nxt)
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| | Nxtcom error #89
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I've been using the nxtcom utility to download NXC apps from my Mac. It was working fine just a few minutes ago, but all of a sudden (starting about 10 minutes ago) it's giving me a "NXT Error #89". I've searched the web and read the read-me, and (...) (16 years ago, 5-Mar-08, to lugnet.robotics.nxt)
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| |
| | Re: new to nbc; invaders problem
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|
(...) I will check into this when I get home this evening but I think your problem may be that BricxCC and NBC do not automatically download the .RIC files referenced in the program source code. Those must be downloaded manually, which you can (...) (16 years ago, 3-Mar-08, to lugnet.robotics.nxt, lugnet.robotics, FTX)
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| | new to nbc; invaders problem
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I'm just getting started with bricxcc (and winxp on my mac), so I'm hoping there's something painfully obvious I'm missing. I've compiled and run a few simple nbc and nxc programs (mostly from John's book), but invaders.nbc isn't working for me. I (...) (16 years ago, 2-Mar-08, to lugnet.robotics.nxt, lugnet.robotics, FTX)
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| | Re: Compass sensor with NXC
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(...) I emailed Karen with the solution to her problem. This can trip you up if you aren't careful. Drawing values to the screen can confuse you if you draw over the top of an existing number without clearing the screen first. John Hansen (16 years ago, 29-Feb-08, to lugnet.robotics.nxt)
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| | Re: Compass sensor with NXC
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|
(...) Hi John, We're using the HiTechnic sensor. I've contacted you directly with a copy of the program, and here it is if anyone else has an idea for us: task main() { SetSensorLowspeed(IN_2); int dir; ClearScreen (); TextOut (32, 48, "Heading:"); (...) (16 years ago, 28-Feb-08, to lugnet.robotics.nxt)
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| |
| | Re: Compass sensor with NXC
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|
(...) Which compass sensor are you using, the HiTechnic one or the Mindsensors one? Are you using a low level API function to read its value or are you using one of the newer API functions specific to the compass sensor? Can you email me your (...) (16 years ago, 28-Feb-08, to lugnet.robotics.nxt)
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| | Compass sensor with NXC
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|
Hello, I coach a Robofest high school team, and we're using two NXT robots for the current challenge, programmed with NXC. We've been having a problem using the Compass sensor with NXC. If I use the view function on the brick (selecting Ultrsonic (...) (16 years ago, 28-Feb-08, to lugnet.robotics.nxt)
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| | Re: What should happen with the lugnet.robotics.nxt sidebar?
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(...) Yes. (...) Links to relevant forums, community projects, NXT MOCs, tips and tricks. (...) Yes, as a chronological, easy to view, list of recent newsgroup user NXT creations. (...) Cool NXT MOCs. (...) The "Recent Items of Interest" should (...) (16 years ago, 27-Feb-08, to lugnet.robotics.nxt)
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| | Re: What should happen with the lugnet.robotics.nxt sidebar?
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I do not use the sidebar at all. Zitat von Jordan Bradford <jordan_bradfordREMO...mail.com>: (...) ---...--- This message was sent using IMP, the Internet Messaging Program. (16 years ago, 26-Feb-08, to lugnet.robotics.nxt)
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| | Re: What should happen with the lugnet.robotics.nxt sidebar?
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(...) To be honest, no, as I read NXT news through lugnet.robotics and never go to lugnet.robotics.nxt... Philo (16 years ago, 25-Feb-08, to lugnet.robotics.nxt)
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| | What should happen with the lugnet.robotics.nxt sidebar?
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|
Hello, LUGNET readers. In case you don't know, I'm the lugnet.robotics.nxt curator. I used to update the NXT section sidebar with [in]frequent regularity, but during the last couple months I've not done anything to it. I get busy and/or don't take (...) (16 years ago, 21-Feb-08, to lugnet.robotics.nxt, lugnet.technic, lugnet.general, lugnet.admin.curators)
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| |
| | Re: PF Speed control (and more) in NBC/NXC
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(...) OK THANK YOU (16 years ago, 20-Feb-08, to lugnet.robotics.nxt)
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| | Re: PF Speed control (and more) in NBC/NXC
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(...) I am in the middle of creating new API functions for NBC/NXC which will enable the same PF motor control via the mindsenors NRLink device. They should be done and in an official beta (b35) by the end of the week. John Hansen (16 years ago, 20-Feb-08, to lugnet.robotics.nxt)
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| | PF Speed control (and more) in NBC/NXC
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|
hello, I've read the news on nxtasy.org that the new test release of bricxCC can control the speed of PF motors via the Hitechnic IrLink.. is it possible to do the same thing with the mindsensors irlink ? thank you Cristian (16 years ago, 20-Feb-08, to lugnet.robotics.nxt)
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| | NXT on the Subway
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|
LOL, the School in Brooklyn where I teach Robotics, gave me an NXT Kit (consumer version) to create a robot for them to use at the Science Fair. [LEGOSet 8527] I did not have a bag to carry the box, so I carried it on the Subway. LOL, everyone was (...) (16 years ago, 14-Feb-08, to lugnet.robotics.nxt, lugnet.general, FTX)
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| | Re: nxt controller specification
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|
(...) Strangely enough, the AVR does NOT read motor encoders, the lines coming from the encoder directly enter the ARM processor... Philo (16 years ago, 14-Feb-08, to lugnet.robotics.nxt)
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| | Re: nxt controller specification
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|
(...) Yep. But note that Philo was talking about *torque*, not force. A torque of 50 N•cm means that it could supply a force of 50 N with a lever arm of 1 cm, or a force of 500 N (more than 100 lbs) for a lever arm of 1 mm... but that would imply an (...) (16 years ago, 13-Feb-08, to lugnet.robotics.nxt)
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| | RE: nxt controller specification
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|
Thank you for clarifying this, Brian. I was reading (URL) It stated that the NXT with "Stalled torque) up to 50 N.cm. 50N... it equates approximately 10lbs?! That is without any further gearing down, but just the NXT motors!? Wonder if anyone has (...) (16 years ago, 13-Feb-08, to lugnet.robotics.nxt)
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| | Re: nxt controller specification
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|
(...) Yes. The AVR is responsible for a number of things, including PWM and encoder reading on the motor ports (IMS), the reading of the front panel button state, power management, and A/D from the input lines for analog sensors. It is not (...) (16 years ago, 13-Feb-08, to lugnet.robotics.nxt)
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| | nxt controller specification
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|
Hi, I wonder if anyone may be familiar with the spec about the nxt brick: I found this on the ww.hobbyengineering.com . NXT Brick * 32-bit ARM7 microcontroller * 256 Kbytes FLASH, 64 Kbytes RAM * 8-bit AVR microcontroller * 4 Kbytes FLASH, 512 Byte (...) (16 years ago, 13-Feb-08, to lugnet.robotics.nxt)
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| |
| | BricxCC Scripting
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|
BricxCC now has preliminary but fully functional support for compiling and executing PC-based scripts to control your programmable brick (NXT, RCX, Spybot, whatever). These scripts can be edited in BricxCC with syntax highlighting and (coming soon) (...) (16 years ago, 12-Feb-08, to lugnet.robotics, lugnet.robotics.nxt, lugnet.robotics.rcx)
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| |
| | Researchers use Lego Mindstorms robot to improve ATM security
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|
(URL) the article: "When the researchers created their prototype, which is called Undercover and was built with a Lego Mindstorms robot, they attempted to come up with a system that would be easy to use but would limit vulnerability to common (...) (16 years ago, 8-Feb-08, to lugnet.robotics, lugnet.robotics.nxt, lugnet.mediawatch)
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| |
| | NXT Battery not charging
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|
Has anyone had this issue before; I have a NXT with the rechargable battery pack and everything has been working fine. I've charged it twice with out issue, but then last night the NXT complained about a low battery but when I hooked it up to the (...) (16 years ago, 27-Jan-08, to lugnet.robotics.nxt)
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| |
| | Re: NXT Power Programming > LDD files?
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|
(...) I don't know if the instructions are on-line (publishers don't always like that), but you might want to have them build something similar of their own, just to help in designing something. Remote controls tend to be pretty simple (although (...) (16 years ago, 27-Jan-08, to lugnet.robotics.nxt)
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| |
| | NXT Power Programming > LDD files?
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|
Yesterday, I acquired and am sharing John's book "NXT Power Programming". I tried to read as much of it last night. Great book! Anyway, I'm at PSU conducting a Lego NXT class with 7 boys. Several of the kids are very interested in the Remote Control (...) (16 years ago, 26-Jan-08, to lugnet.robotics.nxt)
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| |
| | Re: NXT apparently cannot detect two buttons pressed at once
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|
(...) Actually, I've found that the orange button cannot be used independently, at least not from an NXT-G program. A simple program in NXT-G demonstrates the buttons supercede each other as follows: Right button (lowest priority) Left button Off (...) (16 years ago, 21-Jan-08, to lugnet.robotics.nxt, FTX)
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| |
| | Re: NXT apparently cannot detect two buttons pressed at once
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|
(...) Confirmed. The arrows and grey button share a common resistor ladder and only one can be detected. But the orange "on" button has an independant circuitry and can be used separately. See keypad schematics in the HDK. Philo (16 years ago, 21-Jan-08, to lugnet.robotics.nxt, FTX)
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| | NXT apparently cannot detect two buttons pressed at once
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|
Can someone confirm that the front panel buttons on the NXT are wired in such a way that it does not work to press two of them at once? Not too surprising, I suppose, just as early computer keyboards were pre-decoded to signal which single key was (...) (16 years ago, 21-Jan-08, to lugnet.robotics.nxt, FTX)
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| |
| | pbLua News - Beta 13y is Released!
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|
I am pleased to announce the release of pbLua Beta 13y - which is a replacement firmware for the LEGO MINDSTORMS NXT that runs right on the brick. It parses source code files sent to it via the USB or Bluetooth ports and runs the code. (URL) Lua is (...) (16 years ago, 20-Jan-08, to lugnet.robotics.nxt)
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| |
| | Re: LDraw NXT parts kit overhaul
|
|
(...) Thanks, Philo! I really appreciate the hard work you (and others) have put into these parts. Your website makes it easy to add the NXT parts into MLCAD. (...) I'm glad to see that you've also addressed the "stone" colors issue on the website (...) (16 years ago, 18-Jan-08, to lugnet.cad, lugnet.robotics.nxt, FTX)
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| |
| | Re: Self-brew flexible bricks and silent motor for Lego NXT
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|
(...) There's a simple solution to the problem you've been having with air bubbles. Once you've got the mold filled, you need to introduce vacuum, which will pull the bubbles right out of the material and dissipate them. Back when I was in the (...) (16 years ago, 13-Jan-08, to lugnet.robotics.nxt)
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| |
| | Re: LDraw NXT parts kit overhaul
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|
(...) This is great! Thanks much Philo! Now, if only someone can convince Kevin to make LSYNTH work with the wider cables of NXT. (16 years ago, 18-Jan-08, to lugnet.cad, lugnet.robotics.nxt, FTX)
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| |
| | LDraw NXT parts kit overhaul
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|
After several weeks of patient work, I am finally finished with a major redesign of all NXT parts. All these parts were submitted to (URL) LDraw Parts Tracker> but for your convenience I have updated the (URL) kit> available on my website. Using (...) (16 years ago, 18-Jan-08, to lugnet.announce, lugnet.cad, lugnet.robotics.nxt, FTX) !!
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| |
| | Re: Self-brew flexible bricks and silent motor for Lego NXT
|
|
Sibrecht, that's awesome! I've blogged an according entry to THE NXT STEP blog: (URL) moulding one's own custom parts - a dream ... Best, MP Zitat von Sibrecht Bouwstra <s.bouwstra@student.tue.nl>: (...) ---...--- This message was sent using IMP, (...) (16 years ago, 16-Jan-08, to lugnet.robotics.nxt)
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| |
| | Re: Self-brew flexible bricks and silent motor for Lego NXT
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|
(...) Sounds interesting. I'll check out your web site when I can do that without using Flash. (16 years ago, 16-Jan-08, to lugnet.robotics.nxt)
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| |
| | Re: Bricxcc Problem
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|
(...) I recommend that you switch to using the internal NBC/NXC compiler which you can do via the Preferences dialog. The error you are getting is from the NBC executable. Your best bet is to email me when you run into problems with BricxCC or (...) (16 years ago, 14-Jan-08, to lugnet.robotics.nxt, FTX)
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| |
| | Bricxcc Problem
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|
I get this error then Bricxcc either wont load or when it does load won't let me edit files. (URL) (16 years ago, 14-Jan-08, to lugnet.robotics.nxt, FTX)
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| |
| | Re: Enhanced standard NXT firmware updates
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|
I don't do a lot of high end stuff but I think I can use the trig functions! (16 years ago, 13-Jan-08, to lugnet.robotics.nxt)
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| |
| | Re: Enhanced standard NXT firmware updates
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|
I don't do a lot of high end stuff but I think I can use the trig functions! (16 years ago, 13-Jan-08, to lugnet.robotics.nxt)
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| |
| | Self-brew flexible bricks and silent motor for Lego NXT
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|
In the context of my study Industrial Design at the TU/e I have developed a 'natural animation' expansion pack for Lego® Mindstorms® NXT. My goal was to create an actuator and brick that stimulate natural animation and are useful for the creation of (...) (16 years ago, 12-Jan-08, to lugnet.robotics.nxt)
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| | Enhanced standard NXT firmware updates
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|
I have uploaded a pre-release of a new enhanced NBC/NXC firmware (1.06a) which you may want to try out. It has a new arrop opcode which supports a number of useful array operations. OPARR_SUM, OPARR_MEAN, OPARR_SUMSQR, OPARR_STD, OPARR_MIN, (...) (16 years ago, 11-Jan-08, to lugnet.robotics.nxt)
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| | Java for NXT
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|
The 0.5 beta release for Windows and for Linux is now on the sourceforge web site. (URL) changes and new features include: - Garbage collector - Execute code from flash - Automatic defrag of file system - Greatly improved Bluetooth support including (...) (16 years ago, 9-Jan-08, to lugnet.robotics.nxt)
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| | Re: Hi-speed port communication
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|
I posted a zip to the NXC samples page containing a pair of programs that show how to send a message from one NXT to another over a wire connected between port 4 on both NXTs. (URL) Hansen (16 years ago, 7-Jan-08, to lugnet.robotics.nxt)
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| | Re: Hi-speed port communication
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|
(...) Hi all, the physical connection of NXTs via RS485 is just the first half of the solution... Remeber, at 2-wire RS485 you can have one master only and up to 31 slaves. To address each slave, you need to implement a special protocol which (...) (16 years ago, 5-Jan-08, to lugnet.robotics.nxt)
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| | Re: Hi-speed port communication
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|
Hi Ross, (...) it should be possible to use RS-485 as a bus, i.e. connect several NXTs with one cable. You need to make the cable yourself, though, and you may need some termination on the ends. Jürgen (16 years ago, 4-Jan-08, to lugnet.robotics.nxt)
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| | Re: Hi-speed port communication
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|
(...) Thanks John. I agree that from the electrical point of view, just connecting one port 4 to another port 4 should just work with no hardware other than the cable (for short lengths, like the cables that come with the NXT). For longer cables, a (...) (16 years ago, 5-Jan-08, to lugnet.robotics.nxt)
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| | Re: Hi-speed port communication
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(...) Two. Input port #4 fills up pretty quick. Should give a nice performance boost over BT though. (16 years ago, 4-Jan-08, to lugnet.robotics.nxt)
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| | The Unofficial LEGO MINDSTORMS NXT Inventor's Guide
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I'm having a book signing this month for my new book The Unofficial LEGO MINDSTORMS NXT Inventor's Guide (No Starch Press), and I decided to officially announce the book here on LUGNET and invite everyone who lives in the Round Rock, Texas area to (...) (16 years ago, 4-Jan-08, to lugnet.announce, lugnet.robotics, lugnet.robotics.nxt, lugnet.events, lugnet.loc.us.tx, FTX) !
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| | Re: Hi-speed port communication
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(...) Cool! I wonder if you could daisy-chain NXTs using this technique, and if so, how many you could connect? ROSCO (16 years ago, 4-Jan-08, to lugnet.robotics.nxt)
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| | Hi-speed port communication
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|
I've been getting a number of emails from some people who want to know how to use the hi-speed RS-485 port 4 functionality in the NXT using the standard firmware. With John Barnes' help I now know how to get it to work correctly. Here is a simple (...) (16 years ago, 4-Jan-08, to lugnet.robotics.nxt)
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| | Re: designing new NXT parts (propeller and motor) using rapid prototyping
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(...) Indeed, this 180mA limitation is the one of the 4.3V power supply, that feeds the sensors and the motor position encoders. The motors themselves can receive a much higher current, limited by their own thermal protection and by the maximum (...) (16 years ago, 31-Dec-07, to lugnet.robotics.nxt)
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| | NXT iterate files
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I wrote some NXC code that runs on the enhanced NBC/NXC firmware. It demonstrates how to iterate files on the filesystem. Let me know if you have any questions. John Hansen #define LOADER_HANDLE(_x) (_x&0xff) #define LOADER_ERR_BYTE(_x) (...) (16 years ago, 30-Dec-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: NXC problem
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(...) Remove the #include "NXCDefs.h" line since recent versions of the compiler do not require that you explicitly include this file. Make sure you are running the latest BricxCC and NBC/NXC compiler. The lastest version of the compiler is (...) (16 years ago, 30-Dec-07, to lugnet.robotics.nxt)
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| | Re: designing new NXT parts (propeller and motor) using rapid prototyping
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(...) Nice looking parts! One of those times I wish I had a access to such equipment. (...) A nice idea, and well-written. There are a few interesting points that I thought of while reading through it. First, you mention the NXT limits the total (...) (16 years ago, 30-Dec-07, to lugnet.robotics.nxt)
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| | designing new NXT parts (propeller and motor) using rapid prototyping
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Dear all, For those interested, I have been exploring the use of rapid prototyping technology in building new parts for the NXT. I attempted to build a propeller brick in combination with a more powerful motor. Read my results on (...) (16 years ago, 30-Dec-07, to lugnet.robotics.nxt)
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| | NXC problem
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I've tried to install Bricx and NXC but when I try to compile a simple program I get an error like "Unable to find include file: "NXCDefs.h". I figure I probably just have something configured incorrectly but can't find any guidance as to what I (...) (16 years ago, 28-Dec-07, to lugnet.robotics.nxt)
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| | Re: recharging NXT battery block with DC adapter?
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(...) The reason asking is that sometimes we send teams of students to a country with different voltage in the outlet, i.e. 110V instead of 220V, and the LEGO adapter accepts 220V, but not 110V. However, we have a DC adapter that accepts both 110V (...) (17 years ago, 20-Dec-07, to lugnet.robotics.nxt)
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| | NXT, Bluetooth, and Palm
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Ok, so after 7 years of using my faithful Palm Vx, syncing it to my Kubuntu Linux machine at work put something on it to make it fatally crash every time I ran the calendar. Seeing as this was the most important function of the Palm, I decided it (...) (17 years ago, 18-Dec-07, to lugnet.robotics.nxt, lugnet.robotics.palm)
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| | Colour Sensor
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Which command do I use to initialise my Hitechnic colour sensor under NXC on the NXT? Thanks Steve (17 years ago, 18-Dec-07, to lugnet.robotics.nxt)
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| | Re: motor command question
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Hi Patty, I can't really answer this question other to say that I had exactly the same problem a while ago. I talked to LEGO tech support to no avail and they actually sent me a replacement block to fix the problem. However when I got it I had (...) (17 years ago, 3-Dec-07, to lugnet.robotics.nxt)
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| | Re: motor command question
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Because the motors start to turn, then the program reaches the end, and exits. You need to tell the program to "wait for" something after the motors start. Steve (...) (17 years ago, 3-Dec-07, to lugnet.robotics.nxt)
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| | motor command question
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Why would two motors, set to turn and with unlimited chosen for time out, only turn a couple of times and stop. this motor command is the only command in the program. patty (17 years ago, 3-Dec-07, to lugnet.robotics.nxt)
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| | Re: Nxc and Mindsensors stuff
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(...) Thank you! But it worked only after firmware upgrade (to version 1.05) and using original NXT flat cables (Mindsensors flat cables are very poor quality). -- alf (17 years ago, 30-Nov-07, to lugnet.robotics.nxt)
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| | Re: recharging NXT battery block with DC adapter?
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My NXT Charger came with my battery. The output of the charger is 10.8 volts, 700 ma 8W. I would just buy the Lego charger. After reaching a full charge, the charger goes into a trickle charge mode. "Pavel Petrovic" <pavel.petrovic@gmail.com> wrote (...) (17 years ago, 30-Nov-07, to lugnet.robotics.nxt)
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| | Re: recharging NXT battery block with DC adapter?
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(...) Whew! I was going to put my question in past tense ("Does this mean that I should have or shouldn't have used the train controller plug ...") but it seemed better to be a fool after doing something not dumb than after doing something dumb! (...) (17 years ago, 30-Nov-07, to lugnet.robotics.nxt)
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| | Re: recharging NXT battery block with DC adapter?
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(...) You should. The NXT battery expects the same wallwart as the train controller and RCX. Philo (17 years ago, 30-Nov-07, to lugnet.robotics.nxt)
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| | Re: recharging NXT battery block with DC adapter?
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(...) Brian, So, does this mean that I should or I shouldn't use the train controller plug thingy that I use for the trains and my RCX? Rafe (17 years ago, 30-Nov-07, to lugnet.robotics.nxt)
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| | Re: recharging NXT battery block with DC adapter?
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(...) I'd say a bad idea, since it's supposed to be supplied with 9-12V *AC* (not DC) power. Like the RCX 1.0, it might work under a DC supply... but that's not what it was designed for. (17 years ago, 30-Nov-07, to lugnet.robotics.nxt)
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| | recharging NXT battery block with DC adapter?
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Hi, Can anybody confirm whether recharging a NXT battery block using 9V or 12V DC adapter is a bad or good idea, please? Seems that LEGO published HW schematics for the brick, but not for the battery block... Pavel. (17 years ago, 30-Nov-07, to lugnet.robotics.nxt)
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| | Re: Nxc and Mindsensors stuff
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(...) Well, I use Linux so I completely skipped the part about NXT-G in the docs and I missed the reference to the light sensor. Anyway, that is sort of what I tried (I changed the original program so many times I am not sure). But probably I missed (...) (17 years ago, 27-Nov-07, to lugnet.robotics.nxt)
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| | Re: Nxc and Mindsensors stuff
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(...) I do not have the mindsensors DROD-Nx sensor but I have read the documentation from their website. It says that the sensor is an analog sensor which you can read using the standard NXT-G light sensor block. That means you need to configure the (...) (17 years ago, 27-Nov-07, to lugnet.robotics.nxt)
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| | Re: Nxc and Mindsensors stuff
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(...) To use the DIST-Nx sensor from mindsensors.com you can use the code at this url: (URL) sure you initialize the sensor using the correct type and properly energize it after you configure the port as a lowspeed port. The sample program is setup (...) (17 years ago, 27-Nov-07, to lugnet.robotics.nxt)
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| | Re: Nxc and Mindsensors stuff
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Il giorno 12-nov-2007, alle ore 16:59, GiP ha scritto: (...) Hi, I finally got my mindsensors stuff (including a DIST-Nx) and am still figuring out how to use them with NXC. It seems we need only two functions: - a "do a full initialization" one: (...) (17 years ago, 26-Nov-07, to lugnet.robotics.nxt)
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| | Re: Nxc and Mindsensors stuff
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(...) Actually, I have them. But it didn't help, I tried to use the I2C functions and the usual SetSensorType but I cannot get a meaningful number, maybe I am doing something wrong. Does anyone have an example of a NXC program that read a (...) (17 years ago, 19-Nov-07, to lugnet.robotics.nxt)
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| | Re: Displaying multiple variables
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(...) There's also Steve Hassenplug's Display Number block (find it here (URL) along with some other NXT-G goodies). I use this all the time to display values for debugging. John (17 years ago, 19-Nov-07, to lugnet.robotics.nxt)
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| | Re: Nxc and Mindsensors stuff
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It seems you don't have the latest NXC*.h header files (found in source release of NXC, not in the binary releases), as well as the latest NXC_Guide.pdf describing I2C functions. alf Il giorno 12-nov-2007, alle ore 16:59, GiP ha scritto: (...) -- (...) (17 years ago, 18-Nov-07, to lugnet.robotics.nxt)
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