 | | Re: It says it is, but it ain't resetting
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Hi, (...) probably some problem with the USB data transfer on your computer, which corrupted the firmware. This seems to occur with some computers, LEGO put out a driver update last year to correct it: (URL) that the ticking sound doesn't (...) (17 years ago, 23-Jul-07, to lugnet.robotics.nxt)
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| | Re: It says it is, but it ain't resetting
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(...) I've resurrected the "dead" NXT using the standard procedures and my home computer. Perhaps, the computers in the lab where smarter than mine. Mine performed the download but froze up. I had to power down and reboot. All is fine now, though (...) (17 years ago, 23-Jul-07, to lugnet.robotics.nxt)
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| | Re: RCX Roverbot morphs to NXT
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(...) The kids in last weeks class got some track models started then they quit when the going got rough. After I finished my model, they realized how much slower tracks are versus wheels. They chose speedy wheels over tracks. It's going to be (...) (17 years ago, 22-Jul-07, to lugnet.robotics.nxt)
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| | Re: It says it is, but it ain't resetting
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(...) I'll try the Briccx and/or NeXTTool approach. Thanks (17 years ago, 22-Jul-07, to lugnet.robotics.nxt)
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| | Orange color with LeoCAD
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Bothered by the weird rendering of orange color in LeoCAD, I have compiled an unofficial version that imports, displays and export correctly this color. Get it here: (URL) (17 years ago, 22-Jul-07, to lugnet.cad.leocad, lugnet.robotics.nxt)
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| | Re: It says it is, but it ain't resetting
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(...) It may just need new batteries. You may want to try putting brand new Alkaline AAs in it and then press the reset button for a long time (or try using BricxCC or NeXTTool to put the brick in SAMBA mode). John Hansen (17 years ago, 22-Jul-07, to lugnet.robotics.nxt)
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| | Re: RCX Roverbot morphs to NXT
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I've been working on a tracked robot for my FLL team to play with. I don't have any pictures, but an MLCAD model is about 99% complete. I need to do the wires and am having fun trying to learn lsynth. Here's an image of the robot: (URL) not sure how (...) (17 years ago, 21-Jul-07, to lugnet.robotics.nxt)
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| | It says it is, but it ain't resetting
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I reset an errant NXT and completed downloading the firmware. But the NXT still would not wake up and stayed in Samba mode. Trying to download firmware immediately after latching the battery pack and hearing the Samba beat, gives me a "Cannot locate (...) (17 years ago, 21-Jul-07, to lugnet.robotics.nxt)
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| | New BricxCC test release
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I have uploaded a new BricxCC test release that includes some new BricxCC features that folks have requested. 1. From the NXT Screen tool you can execute utility functions such as renaming your NXT, resetting Bluetooth to factory defaults, and (...) (17 years ago, 20-Jul-07, to lugnet.robotics.nxt)
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| | Re: Messing with memory pool
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(...) So you have not removed the line from cCmdInitPool where VarsCmd.Pool is set equal to IOMapCmd.MemoryPool, correct? Can you say where "mem" comes from and is it for certain being initialized to zero or nil before cCmdInitPool gets called? Is (...) (17 years ago, 20-Jul-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: New assembler for NXT :-)
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(...) I just had a look at your project. It is very cool! I am very glad to see that someone else is trying to sort out how to generate valid NXT executables. Hopefully you've been able to piggy-back on some of my NBC work so that you haven't had to (...) (17 years ago, 20-Jul-07, to lugnet.robotics.nxt)
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| | New assembler for NXT :-)
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Hi, I'm Matteo Valdina and I'm the main developer of NXTAssembler. NXTAssembler is an assembler for the standard firmware of Lego Mindstorms NXT.This project can be found at (URL) and for information (URL) project is written in Java 1.5 and (...) (17 years ago, 19-Jul-07, to lugnet.robotics.nxt)
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| | Re: RCX Roverbot morphs to NXT
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(...) site. I checked out Goliath I and II at Matthias' site and the Clanker. I can see that the Goliaths are not geared down and the motors are tucked into a well created by the triangular configuration of the thread and the vertical mounting (...) (17 years ago, 18-Jul-07, to lugnet.robotics.nxt)
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| | Re: RCX Roverbot morphs to NXT
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(...) I tend to avoid tracked robots as much as possible, but have found myself using them a significant amount with the NXT for some reason. While this doesn't use "standard treads", here's a good minimalist treaded vehicle (it would be very easy (...) (17 years ago, 18-Jul-07, to lugnet.robotics.nxt)
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| | Re: RCX Roverbot morphs to NXT
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Gypsy, you could have a look here - there are two tracked robots (alongside with building instructions): (URL) von gypsy_fly <e_pilobello@yahoo.com>: (...) ---...--- This message was sent using IMP, the Internet Messaging Program. (17 years ago, 18-Jul-07, to lugnet.robotics.nxt)
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| | RCX Roverbot morphs to NXT
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I brought in all our RCX pieces for this week's "Lego A.T.V. Droid" class. I figured the kids might want to create a tracked robot or two. I made one myself after several kids struggled to create a sturdy base. At the moment, I'm staring at my (...) (17 years ago, 18-Jul-07, to lugnet.robotics.nxt)
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| | Re: nxt interfaces with GPS using nxc or robotc?
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(...) I've been wanting to do this for quite some time. John suggested using the IO map before, but I've never been able to get the data I needed from there. So, having played with LEGO's firmware, RobotC, and looking at other options, the only (...) (17 years ago, 18-Jul-07, to lugnet.robotics.nxt)
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| | Re: Rechargeable Battery Question
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(...) Gus, I appreciate the rapid feedback. Off to order an extended battery pack. Thanks again. Brian (17 years ago, 18-Jul-07, to lugnet.robotics.nxt)
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| | Re: Rechargeable Battery Question
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(...) It's the same. (17 years ago, 18-Jul-07, to lugnet.robotics.nxt)
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| | Rechargeable Battery Question
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I am brand new to the NXT world but I would like to purchase the rechargeable battery. My question: Is the A/C adapter unique to the battery or can a train a/c adapter be used instead? I know the combo pack is only $5 more but I have way to many (...) (17 years ago, 18-Jul-07, to lugnet.robotics.nxt)
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| | Re: nxt interfaces with GPS using nxc or robotc?
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(...) I'm not convince personally that it can't be done with the standard NXT firmware yet but I quite possibly am missing something in my examination of the NXT firmware sourcecode. It seems like the incoming data should be copied into the (...) (17 years ago, 18-Jul-07, to lugnet.robotics.nxt)
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| | leJOS NXJ 0.3 released
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The latest version of leJOS NXJ is finally ready! For those who aren't familiar with leJOS, it's a full replacement firmware for the LEGO Mindstorms NXT brick that allows you to run Java programs on the NXT brick. leJOS NXJ works with Windows, Linux (...) (17 years ago, 18-Jul-07, to lugnet.robotics.nxt)
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| | Re: nxt interfaces with GPS using nxc or robotc?
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(...) Unless John Hansen does some significant rewriting of the FW again, I don't think you'll be talking to your GPS via NXC (or anything else based on the standard FW). The problem is that GPS units like to send strings of charecters, while the (...) (17 years ago, 17-Jul-07, to lugnet.robotics.nxt)
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| | nxt interfaces with GPS using nxc or robotc?
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Hello all, I tried to interface my gps, i.trekz1 solar Bluetooth datalogger, using the NXC. No luck there. Wonder if anyone has played with that at all. (17 years ago, 17-Jul-07, to lugnet.robotics.nxt)
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| | Re: Messing with memory pool
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(...) Okay, thanks for the tip. It was a bit unnecessary for you to spend two paragraphs on that, though; a sentence or two would have sufficed. :-) (...) Code is as follows: if (!mem) mem= (char*)(VarsCmd.Pool); memset(mem, 0, POOL_MAX_SIZE); I'm (...) (17 years ago, 17-Jul-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: Messing with memory pool
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(...) There is no such thing as an NXT-G memory pool. The standard NXT firmware has nothing to do with the graphical programming language implemented by LEGO and NI which is called NXT-G. (...) Why are you setting it to 0x00 if other parts of the (...) (17 years ago, 17-Jul-07, to lugnet.robotics.nxt.nxthacking)
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| | Colors, LDconfig, etc...
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Is there some project to extend LDconfig.ldr to include some recent colors such as Light Stone Gray? Case in point: NXT parts are presently coded in color 383, which works fine with most CAD program but is - as intended - shown as chrome (shiny (...) (17 years ago, 17-Jul-07, to lugnet.cad, lugnet.robotics.nxt)
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| | Java for NXT
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LeJOS NXJ 0.3 is out! After a long and painful delay (especially for the developers) the new and improved version of leJOS NXJ is finally available. This new version has many new features including storing programs and data to flash memory, a menu (...) (17 years ago, 17-Jul-07, to lugnet.robotics.nxt)
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| | Messing with memory pool
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I'm working on a custom firmware with a new VM. I'm currently trying to reuse the NXT-G memory pool to hold data for the new VM, but I'm running into problems. Apparently, doing a memset to set all of the pool to 0x00 causes the firmware to crash. (...) (17 years ago, 16-Jul-07, to lugnet.robotics.nxt.nxthacking)
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| | New NXC/NBC release is available
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I have released today beta 31 of NBC/NXC. Lots and lots of fixes and enhancements. Some of your code may not compile due to fixes that I have made to the parser. It used to let things get past which it should not have been allowing such as extra (...) (17 years ago, 13-Jul-07, to lugnet.robotics.nxt)
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| | Re: Teaching Bluetooth and Protocols
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(...) Sounds like a great way to test. We could probably try the experiment tomorrow. At the moment, the 10 boys in this week's class are more inclined to play "grab the flag" using automonous robots than BT Remote Control. We experienced the 5 pair (...) (17 years ago, 12-Jul-07, to lugnet.robotics.nxt)
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| | NXTasy challenge #3
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For those not reading TheNXTStep not NXTasy (are there any?) - I organize a new community challenge over NXTasy forums. The challenge is to build a NXT 'ANT' ('ANxT' for short) which carrys a weight over 1 meter distance above ground. The extra fun (...) (17 years ago, 12-Jul-07, to lugnet.robotics.nxt)
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| | Re: Teaching Bluetooth and Protocols
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(...) As soon as I get ten NXTs handy, I'll be sure to test this. In fact, I may know somebody who could test this (or at least I can think of a place, NI Week, where I might). Very odd. Try this. Establish five pairs, and then establoish a sixth (...) (17 years ago, 12-Jul-07, to lugnet.robotics.nxt)
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| | Re: Teaching Bluetooth and Protocols
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(...) Strange indeed, But, that's what we experienced. I have faith that more than 5 pairs can communicate all at the same time. On the other hand, maybe we used up all the channels. Perhaps like in RC airplanes, we ran out of crystals. (17 years ago, 11-Jul-07, to lugnet.robotics.nxt)
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| | binsert question
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Starting with the original NXTGCC source, if I disable binsert in the makefile, the firmware crashes on boot. The firmware development which I am doing will probably increase the size of the firmware by around 20KB, so I'm wondering if I need to do (...) (17 years ago, 11-Jul-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: Teaching Bluetooth and Protocols
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(...) ... (...) Just to be clear, you got 5 pairs of master/slave NXTs to communicate as pairs? But if you added a 6th pair, then those two could not connect to each other? That's really strange... Ralph (17 years ago, 11-Jul-07, to lugnet.robotics.nxt)
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| | Teaching Bluetooth and Protocols
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I've reached a goal this summer. Last week, 5 kids got into Bluetooth and made simple remote controls. I provided two simple NXT-G programs, BTSend on the Master NXT Remote Control and BTRecv on the Robot Slave. BTSend uses the left and right NXT (...) (17 years ago, 11-Jul-07, to lugnet.robotics.nxt)
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| | Re: Introduction of LEJOS OSEK
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LEJOS OSEK ver.1.03 was just released. (URL) 1.03 includes a minor bug fix and a new interesting application example which is called NXT GT. NXT GT is a Bluetooth based R/C car and you can control the NXT GT by using PC analog game pad controller! (17 years ago, 11-Jul-07, to lugnet.robotics.nxt)
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| | Re: MINDSTORMS Community Partners
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(...) Is this the same forum that Vernier Software is involved in? The company is making ready as many of their sensors (40+) to work with the NXT. Their Logger Pro is used in a lot of middle and high school science classrooms. The last time I (...) (17 years ago, 10-Jul-07, to lugnet.robotics.nxt, FTX)
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| | Using the NXT with I2C Sensors
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All, I've finally got around to updating my site with a detailed description of connecting the NXT to the ultrasound (sonar) sensor and also to third party sensors like those from HiTechnic and Mindsensors. (URL) Cheers, Ralph (17 years ago, 5-Jul-07, to lugnet.robotics.nxt)
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| | Re: MINDSTORMS Community Partners
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(...) I was under the possibly mistaken impression that joining the MCP for round 2 was intended to be a "by invitation only" sort of thing and that it was not intended to be sent out to the general public. I could be wrong and, if so, my humble (...) (17 years ago, 4-Jul-07, to lugnet.robotics.nxt, FTX)
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| | MINDSTORMS Community Partners
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Are You a Hardcore LEGO MINDSTORMS NXT User? Do you want to have a seat in our closed webforum, the Mindstorms Community Partners, where we involve you in our development and tests of new ideas, concepts, prototypes, products and discuss various (...) (17 years ago, 4-Jul-07, to lugnet.robotics.nxt, lugnet.general, FTX)
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| | Re: Using the NXT with a GPS
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(...) Perhaps Canada skips from the 3rd to the 5th every year. Maybe they just have a Sadie Hawkin's Day (1) every year to make up for it? -Rob www.lifelites.com (1) (URL) (17 years ago, 3-Jul-07, to lugnet.robotics.nxt)
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| | Re: Using the NXT with a GPS
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(...) Hi Ralph, and all my open questions (3-4 weeks old) are answered now ! It works fine with OSX and WM5 BT-Peers... I've managed it to peer with OSX 10.4.x or WM5 and send simple strings now! Great job Thanks Bye Christian (17 years ago, 2-Jul-07, to lugnet.robotics.nxt)
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| | NBC/NXC beta 31 Release
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I am about ready to release a new beta of NBC/NXC. There are some very important new features and bug fixes in this release. Here's the current list of fixes and new features. Version 1.0.1.b31 ---...--- - Fixes a boolean expression bug which (...) (17 years ago, 2-Jul-07, to lugnet.robotics.nxt)
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| | Re: Using the NXT with a GPS
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(...) I guess I need to download the latest version. Thanks Ralph. (...) Don't you have a July 4th in Canada? :) Steve (17 years ago, 2-Jul-07, to lugnet.robotics.nxt)
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| | Using the NXT with a GPS
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All, I've finally got around to updating my site with a detailed description of connecting the NXT to a Bluetooth GPS unit. It updates the NXT display in real time with lat, long etc. The parsing is really barebones and shows the power of pbLua in a (...) (17 years ago, 2-Jul-07, to lugnet.robotics.nxt)
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| | RE: Progressing from RCX to NXT
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Did they use Robolab to teach at the summer camp? If so, he could also use it to program the NXT; just make sure you obtain Robolab 2.9 version which supports both RCX and NXT; version 2.5 is RCX only. -----Original Message----- From: (...) (17 years ago, 1-Jul-07, to lugnet.robotics.nxt)
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| | Re: Custom firmware crashing on boot
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Sorry I didn't have time to reply to your post yesteday; I had limited time available. (...) Hmm, as I said yesterday to Dick, disabling all three binsert calls in the makefile caused my firmware to crash on a blank screen, even after I had done (...) (17 years ago, 29-Jun-07, to lugnet.robotics.nxt.nxthacking)
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| | NXT & RIC
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A while back I wrote part 1 of a 2 part description of the RIC file format on the Nxtasy blog. I still haven't gotten around to writing part 2 (been busy writing other stuff) but RIC-related things have been hanging around on the edges of my (...) (17 years ago, 29-Jun-07, to lugnet.robotics.nxt)
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| | Re: Adding a JTAG port?
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(...) I used a JTAG tool in the beginning by glueing a JTAG connector manually. You could do that and perhaps have a look at section 4.3 in (URL) it is easier to use libnxt. I am using it in this project: (URL) can download libnxt source from (or of (...) (17 years ago, 29-Jun-07, to lugnet.robotics.nxt.nxthacking)
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| | Adding a JTAG port?
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Hi all, Do I need to add a JTAG port to develop an alternative runtime for the NXT? We did the RCX without this level of debugging, and the NXT is far more open. Is it necessary, nice to have, or simply not necessary at all? Given that our VM is, at (...) (17 years ago, 29-Jun-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: Introduction of LEJOS OSEK
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LEJOS OSEK Website has been available at (URL) There has been several updates since the first introduction: - LEJOS OSEK Ver 1.02 supports restart of application program by pressing the triangle button at the left hand side of NXT. (Usability should (...) (17 years ago, 29-Jun-07, to lugnet.robotics.nxt)
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| | Progressing from RCX to NXT
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SHORT VERSION Can anyone point me in the direction of some simple NXT models, preferably of fun things like vehicles, that a smart rising 4th grader can build on his own, that will inspire him to explore NXT? LONGER VERSION My son is 9 1/2. We gave (...) (17 years ago, 29-Jun-07, to lugnet.robotics.nxt)
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| | Re: Custom firmware crashing on boot
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(...) The modifications are slightly more complex than simply replacing c_cmd.c, but that's basically the only NXTGCC file that I've modified. The new VM is copied mostly verbatim from another program, and is contained in a new file, pcodesim.c. (...) (17 years ago, 28-Jun-07, to lugnet.robotics.nxt.nxthacking)
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| | RE: Custom firmware crashing on boot
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Here's two things to try since you've only swapped out the VM hich I assume is a replacement for the "c_cmd.c" file. 1. First there is a "#define" that specifies the start address of the file system. If you're 10K larger you're going to need to (...) (17 years ago, 27-Jun-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: Custom firmware crashing on boot
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(...) It is nice with some action. (...) OK, that is very good. (...) A quick question: Are you running binsert after you compile? It may be worthwhile to look at lines 50-55 in "Makefile". With some effort and a hex file editor you can check if (...) (17 years ago, 28-Jun-07, to lugnet.robotics.nxt.nxthacking)
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| | Custom firmware crashing on boot
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|
Hey, I'm new here, so if I seem like a n00b, it's probably because I am. Hopefully my question won't be too annoying. I'm trying to use the NXTGCC 0.0.9 package as a starting point for custom firmware. The main point of my custom firmware is to swap (...) (17 years ago, 27-Jun-07, to lugnet.robotics.nxt.nxthacking)
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| | Temporarily removing official NXT driver to use SAM-BA
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Hey, I tried to post this message two days ago and it hasn't shown up yet, so I'm trying again (with a different client in case that's why it was eaten). If people receive duplicates, I sincerely apologize. Message follows: Hey, I apologize in (...) (17 years ago, 27-Jun-07, to lugnet.robotics.nxt)
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| | pbLua BT Code
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Hello community, has anybody a working code for pbLua ? I've tried to connect from NXT-pbLua to remote WindowsMobileDevice, but no success... What is the correct way to connect to remote devices ? 1.how is the peering of both partner done ? 2.how (...) (17 years ago, 13-Jun-07, to lugnet.robotics.nxt)
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| | Re: CBS (Clicking Brick Syndrome) Patch availible
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(...) OK - I can't seem to be able to update the firmware on my NXT brick. I never had the clicking brick problem; I followed the instructions from the website for updating the driver to version 1.02. But the poblem is still there. I've done all the (...) (17 years ago, 12-Jun-07, to lugnet.robotics.nxt)
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| | Re: eZCIRCUITs
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(...) The correct URL is (URL). Sorry for the confusion. Don Wilcher (17 years ago, 11-Jun-07, to lugnet.robotics.nxt)
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| | eZCIRCUITs
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Hi All, eZCIRCUITs® is the simple technique of taking basic electronic circuits and interfacing them with the LEGO NXT.I've posted the first eZCIRCUIT application on my blog at (URL). The application note is fully documented with color illustrations (...) (17 years ago, 11-Jun-07, to lugnet.robotics.nxt)
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| | NXC News
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I have posted a new beta release of NBC/NXC. Beta 30 fixes a number of bugs introduced in beta 29 as well as a few that have been around for quite a while. Please let me know if you run into any problems with this new version. There is also a new (...) (17 years ago, 7-Jun-07, to lugnet.robotics.nxt)
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| | Re: events /nxt vs. events/rcx
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(...) Sigh... "good luck"? I don't mean to sound too negative, but this is a hard nut to crack under the standard FW I think... at least I've yet to figure out a way to do it to my satisfaction. In fact, more than almost any other single point, this (...) (17 years ago, 31-May-07, to lugnet.robotics.nxt)
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| | events /nxt vs. events/rcx
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Hi, I tried to write some code to simulate the events like in RCX. It starts to look cluttered. I understand that NXT VM does not support events like you find in the RCX. Any suggestion will be greatly appreciated! Elizabeth (17 years ago, 31-May-07, to lugnet.robotics.nxt)
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| | documentation on bt / nxc
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I have two bots set up some meaningful ack and nack conversation. However, when one bot/slave lost connection, e.g. terminated abruptly, the sender (master) does not notice that it indeed lost it. The ReceiveRemoteNumber(INBOX, true, ack) does not (...) (17 years ago, 31-May-07, to lugnet.robotics.nxt)
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| | name your nxt
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Hi, SetBrickDataName(str) seems to be able to only change the name of the nxt temporarily. Once the nxt is started, it loses the name assigned thru the SetBrickDataName earlier. Idea? --Elizabeth (17 years ago, 31-May-07, to lugnet.robotics.nxt)
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| | Re: Moving NXT motors by hand
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(...) Well, if by "more qualified" you mean "have abused their hardware harder than average, yes :-). Since day 1 I've back-driven the NXT motors by hand, including the magic motor demo (not as efficient with the NXT motors, but it does work), using (...) (17 years ago, 29-May-07, to lugnet.robotics.nxt)
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| | Re: Moving NXT motors by hand
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(...) Well, I don't want to claim to be an expert, but I'll tell you what I've done. I have a couple remotes that I've been using for over a year, and I haven't had problems with them. One not only uses the rotation sensors, but also uses the motors (...) (17 years ago, 29-May-07, to lugnet.robotics.nxt)
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| | RE: Moving NXT motors by hand
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Hand crank it alone should be find. As a matter of fact, that's how we demonstrate to kids a generator. However, just to be on the safe side, I would recommend you not to hand crank it when it is hooked onto to the power source, especially when it (...) (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | Re: Moving NXT motors by hand
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Thanks! (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | Re: Moving NXT motors by hand
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(...) John, there are a lot of people using the NXT motors this way, just to get the feedback from the built-in rotation sensors. The best example would be the MDPers who built one joystick with a NXT kit to control a moving vehicle made with (...) (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | Re: Moving NXT motors by hand
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Hi John, I would not think so, as the NXT's own construction guide has a pick and place (blue ball, red ball) robot, that has hand cranks to move it into position. Danny (...) (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | Moving NXT motors by hand
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Hi: Sometimes my son and I move the NXT motors by hand, for instance, by attaching something to the holes in the orange hubs to act as a crank. We wonder if that's bad for the motors. Does anyone have an opinion? Regards, John and Will (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | robosoccer ball problem
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Hi all, I am trying to get some middle school kids playing a bit with the robosoccer idea. I don't want to frustrate them with the fluctuating IR ball. So, I am planning to find a constant "lighted" ball for them instead, but no luck. Wonder if (...) (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | Gripper/Register for Light Sensor Experiment
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I want to create a platform for experimenting with the light sensor. At the moment, I'm thinking of cutting off the gray-scale and color bars off the NXT Test Pad that comes from the commercial kit. The strip would then be mounted on some device, (...) (17 years ago, 26-May-07, to lugnet.robotics.nxt)
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| | Re: Using NXT Port 4 EIA-485
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(...) Does anybody have an NXC program that demonstrates the use of RS485 communications? (17 years ago, 25-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: bitwise operators
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(...) ...and if you are talking about NXT-G, there is a bitwise manipulation block, written by Mike Gasperi and Steve Hassenplug, available here: (URL) list of available blocks is here: (URL) (17 years ago, 25-May-07, to lugnet.robotics.nxt)
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| | Re: bitwise operators
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(...) Are you talking about NXC or NBC or some other programming language? The standard NXT firmware does support bitwise logical operators such as and, or, and xor. In both NXC and NBC you can use these operations as you would expect in a C-like (...) (17 years ago, 24-May-07, to lugnet.robotics.nxt)
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| | bitwise operators
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I looked thru the doc, it looks like it does not allow bitwise operators like IOR, XOR, AND, etc. Is this correct? Or, I have overlooked something? --thanks Elizabeth (17 years ago, 24-May-07, to lugnet.robotics.nxt)
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| | RE: determine the degree of turning by using ultrasonic sensor
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Ok... I wrap every sequence of motion control with mutex. I created a movement macro which basically just wrap the command(s) around with acquire and release. By the way, would someone tells me how I'll find out how the mutex datatype implemented. (...) (17 years ago, 22-May-07, to lugnet.robotics.nxt)
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| | RE: determine the degree of turning by using ultrasonic sensor
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Found it... RotateMotor(OUT_C, 100, turn); x = MotorRotationCount(OUT_C); --E -----Original Message----- From: news-gateway@lugnet.com [mailto:news-gateway...ugnet.com] On Behalf Of Elizabeth Mabrey Sent: Tuesday, May 22, 2007 12:57 PM To: (...) (17 years ago, 22-May-07, to lugnet.robotics.nxt)
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| | determine the degree of turning by using ultrasonic sensor
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Is it quick way to determining the # of degree or some value which will help to calculate the distance travelled. more or less like the x= rotation-click.. Is it a way to read how much the motor has turned from a certain point. - Reset motor/sensor (...) (17 years ago, 22-May-07, to lugnet.robotics.nxt)
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| | Introduction of LEJOS OSEK
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Hello everyone and special thanks to LEJOS developers, I would like to introduce a new project that is standing on the shoulders of giants. LEJOS OSEK (URL) is an open source firmware for LEGO Mindstorms NXT. LEJOS OSEK consists of I/O driver of (...) (17 years ago, 22-May-07, to lugnet.robotics.nxt)
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| | Re: NXC - embedded functions failed
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(...) I think having NXC generate a compiler error is a great idea. :-) I will work that into the next beta release (b30). I just released beta 29 today. It has a number of important fixes and enhancements but I just noticed that it has a few new (...) (17 years ago, 22-May-07, to lugnet.robotics.nxt)
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| | RE: NXC - embedded functions failed
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Hi John, Will throwing in a compilation error be a viable option? --Elizabeth -----Original Message----- From: news-gateway@lugnet.com [mailto:news-gateway...ugnet.com] On Behalf Of Elizabeth Mabrey Sent: Sunday, May 20, 2007 1:19 PM To: (...) (17 years ago, 21-May-07, to lugnet.robotics.nxt)
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| | Re: pbLua PCF8574 SOLVED !
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(...) Let me say thanks to Dick as well. I think that the NXT firmware does what's called a repeat start in the I2C definition... Here's the part in the I2C spec that is required: (URL) And with pictures: (URL) Hope this helps... Ralph (17 years ago, 21-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: pbLua PCF8574 SOLVED !
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(...) Hi Dick, your answer solves my knot :D It's a NXT specific behaviour and all alternatives NXT-OSes which uses original Lego-Source-Lowlevel routines have this feature ? Thanks for your answer Bye Christian (17 years ago, 21-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | RE: pbLua PCF8574 SOLVED ?
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(...) This is the excepted behavior. When you want to read from I2C device, the NXT firmware first sends a write message to load the internal index "pointer" for the I2C device and then sends a read message that will read the requested number of (...) (17 years ago, 21-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: pbLua PCF8574 SOLVED ?
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(...) Hi, or was it a quirk at my brain to address the i2c-read-address and hope to receive usefull data ? Currently it works for me when using allways the i2c-write address... Are the any demos or samples for NXC, using the PCF8574 ? 1. setting (...) (17 years ago, 21-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: NXC - embedded functions failed
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(...) This is definitely a problem in NXC. The problem is that the value of arg "a" (33) to the function Max is being replaced during the second call to Max since it passes 5 into arg "a". It looks like I need to figure out a decent way to implement (...) (17 years ago, 21-May-07, to lugnet.robotics.nxt)
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| | Re: pbLua PCF8574 SOLVED
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(...) Hi, we solved the problem... Lego-Firmware has own brain and handle read/write with own mechanisms ;-( The last read/write bit is handled automatically by lowlevel routines. Reading the same address like writing solves the problem. (...) (17 years ago, 21-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | NXC - embedded functions failed
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#include "NXCDefs.h" int Max(int a,int b){ if (a>b) return a; else return b; } task main(){ int Prob=0; Prob = Max(33, Max(5,15)); NumOut(5,LCD_LINE2,false,Prob); //returns 15 WRONG ---...--- Prob = Max(5,15); Prob = Max(33,Prob); (...) (17 years ago, 20-May-07, to lugnet.robotics.nxt)
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| | RE: NXT Programming with C Question
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(...) Ralph and Brian have provided good input that parallels my experience. Here's a little more information. If you have access to the IAR tools you can compile the NXT firmware available in the NXT SDK from LEGO "out of the box". I believe there (...) (17 years ago, 20-May-07, to lugnet.robotics.nxt.nxthacking)
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| | press button to return to pbLua-Interpreter
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Hi Ralph, times ago, you have added the function to power off the NXT by pressing the orange button... But: what about implementing a function to break every running code and return back to interpreter ? It is very useful for debugging and (...) (17 years ago, 19-May-07, to lugnet.robotics.nxt)
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| | Re: pbLua Hardware access
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(...) All the nice IO-Ports of the ARM-CPU, which are connected to external ports :D But now I think, we did not need it any more. You are fast enough with your development and responses. Forget Peek and Poke from good old C64 times ;-) Thanks a lot (...) (17 years ago, 19-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: pbLua PCF8574
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(...) Hi Ralph, we are using this code: collectgarbage( "setpause", 110 ); function setupI2C(port) nxt.InputSetType(port,2) nxt.InputSetDir(port,1,1) nxt.InputSetState(port,1,1) nxt.I2CTimer(3) nxt.I2CInitPins(port) end function ReadPCF(port) (...) (17 years ago, 19-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: NXT Programming with C Question
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(...) Hi there, Thanks for venturing those reasons. I had been thinking that with the release of the NXT firmware that there may be options to compile code that worked directly with the firmware. Cheers (17 years ago, 19-May-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: NXT Programming with C Question
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(...) Hi Thanks for the fast response, I think I'll have a look at the pbLua firmware. What I am working towards is a method of running Haskell programs on the NXT by converting to C bytecodes first. (17 years ago, 19-May-07, to lugnet.robotics.nxt.nxthacking)
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