 | | Re: Connect BT devices to the NXT without a passkey?
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(...) Thanks for the good info -- I had forgotten that BT allows for so many services. Mindsensors' Playstation 2 controller interface must be converting the "human interface" signals into serial port messages. Now that the official firmware can be (...) (18 years ago, 4-Jan-07, to lugnet.robotics.nxt, FTX)
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| | RE: NXT Optimized Array Handling
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I would suggest that the easiest way to understand how standard firmware handles arrays is to go to the NI web site and do a search on something like "efficient LabVIEW memory management" which will result in a nice description of how LabVIEW (...) (18 years ago, 30-Dec-06, to lugnet.robotics.nxt)
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| | Re: Line Follower
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(...) Thanks Steve! It's perfect. I will use it in one of the NXT robots. But now, part of this project is to show some comunications between two robots, (and the other one is a RCX driven. It will also follow a line). I saw some time ago a small (...) (18 years ago, 3-Jan-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: How to implement continuous drive with NXT motors?
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"John Brost" <john.brost@gmail.com> skrev i en meddelelse news:JB9BCx.Bt7@lugnet.com... (...) Aaargh. I looked into the complete collection of blocks again. I had only noticed the "Motor" block for legacy motors, not the one for NXT motors. Of (...) (18 years ago, 3-Jan-07, to lugnet.robotics.nxt)
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| | Re: Line Follower
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(...) Patrick, I've made a block for NXT-G (the software that comes with the NXT) that does all the "line-following" stuff. All you need to do is put it in a loop, and set the parameters... (URL) (18 years ago, 2-Jan-07, to lugnet.robotics.nxt)
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| | Line Follower
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Hi, I am starting a project for robotics in my daughter school, and I want to show a line follower example. The goal is to make the kids mount a custom path mande from EVA tiles with the line printed in it, and the robot will make this path. So, the (...) (18 years ago, 2-Jan-07, to lugnet.robotics.nxt)
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| | Re: How to implement continuous drive with NXT motors?
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(...) I'm not exactly following what you want here, but if you want a block that will turn on a motor, and then move on to another block, what you probably want is a "MOTOR" block, not a "MOVE" block. Using a Motor block, you can choose all kinds of (...) (18 years ago, 2-Jan-07, to lugnet.robotics.nxt)
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| | Re: How to implement continuous drive with NXT motors?
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"David Wallace" <dww.robotics@gmail.com> skrev i en meddelelse news:JB74z0.K8v@lugnet.com... (...) Same here, except my move will be to Java which I know best. I may try out NBC at some point. It seems to me the downramp in speed when using the (...) (18 years ago, 2-Jan-07, to lugnet.robotics.nxt)
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| | Bluetooth/Brick
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Dear all, I'm working now with a bluetooth to communicate with my NXT. The comport is COM7. When I run NXT Remote the NXT is responded to the commands. When I run BricxCC the Bluetoot is not recognite, message no connection to the programmable (...) (18 years ago, 2-Jan-07, to lugnet.robotics.nxt)
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| | Re: NBC Control of RCX Sensors
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(...) The RCX sensor itself does not work without activating its LED. IN_TYPE_REFLECTION is the mode you should use with it (IN_TYPE_LIGHT_INACTIVE and IN_TYPE_LIGHT_ACTIVE are for NXT light sensor). As you noticed, the RCX light sensor has some (...) (18 years ago, 2-Jan-07, to lugnet.robotics.nxt)
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| | Re: NBC Control of RCX Sensors
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Another observation. It seems that the IN_TYPE_LIGHT_INACTIVE is really not meant to be used with the RCX light sensor. There is very little sensitivity with this setting. The IN_TYPE_REFLECTION setting is much more sensitive. Too bad that we lost (...) (18 years ago, 2-Jan-07, to lugnet.robotics.nxt)
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| | Re: NBC Control of RCX Sensors
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OK, I answered my own question. I just needed to set the sensor type to: IN_TYPE_LIGHT_INACTIVE for RCX light sensor with the LED ON IN_TYPE_REFLECTION for RCX light sensor with the LED OFF (18 years ago, 2-Jan-07, to lugnet.robotics.nxt)
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| | NBC Control of RCX Sensors
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Has anyone tried to control the RCX sensors with NBC? I have the converter cable and hooked up my RCX light sensor, but only got back readings of 53 (percent full scale). I used the NBC SetSensorLight command which should set the sensor to turn on (...) (18 years ago, 2-Jan-07, to lugnet.robotics.nxt)
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| | Re: How to implement continuous drive with NXT motors?
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I am not a NXT-G expert. I'm a programmer, so I moved to NBC pretty quickly. It's much easier for me to do things in a language than with graphics (not to mention the programs are 1/10 the size of NXT-G). Good Luck! David (18 years ago, 1-Jan-07, to lugnet.robotics.nxt)
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| | Re: How to implement continuous drive with NXT motors?
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"David Wallace" <dww.robotics@gmail.com> skrev i en meddelelse news:JB3HDF.3EL@lugnet.com... (...) I suppose you have to make the change between drive direction blocks by means of some "until sensor actuated" block, then? This was my very first (...) (18 years ago, 1-Jan-07, to lugnet.robotics.nxt)
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| | Re: Connect BT devices to the NXT without a passkey?
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In article <JAynn0.90L@lugnet.com>, Jordan Bradford <jordan_bradfordREMO VE_THIS_SPAM_THINGY@...tmail.com> writes (...) I have not tried this, but I would expect it to work. (...) Alas, this will not work. Bluetooth is just a means of carrying (...) (18 years ago, 31-Dec-06, to lugnet.robotics.nxt)
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| | Re: Sending program by bluetooth
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Hi Jan, I had asked this question of John Hansen a while back. His response follows. Note that this reduced my connection time in BricxCC from 17 seconds to 3 seconds. "First use NeXTTool.exe to create a nxt.dat file like so: nexttool -listbricks > (...) (18 years ago, 30-Dec-06, to lugnet.robotics.nxt)
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| | Re: How to implement continuous drive with NXT motors?
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Hi David, For the motor block, did you choose "Unlimited" in the "Duration" field dropdown box? It defaults to 1 "Rotation". David Wallace "David List" <zerobuttons@gmail.com> wrote in message news:JB3A0n.2MH@lugnet.com... (...) block (...) (18 years ago, 30-Dec-06, to lugnet.robotics.nxt)
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| | How to implement continuous drive with NXT motors?
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Can anyone here help me get continuous drive with NXT motors? I am using NXT-G now, while getting a feel for Mindstorms NXT. I experience that I am unable to get continuous drive with the motors when shifting from one block to another. The speed (...) (18 years ago, 30-Dec-06, to lugnet.robotics.nxt)
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| | Sending program by bluetooth
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Dear All, I send a program compiled (NBC) with the Bricx Command Center to my NXT with a Bluetooth connection. It takes a relative long time before my NXT is ready to run. Is this normal? Can I improve this time? Regards, Jan Kromhout (...) (18 years ago, 29-Dec-06, to lugnet.robotics.nxt)
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| | NXT Optimized Array Handling
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There doesn't seem to be any information on the most memory-efficient or speed-effecient way to handle arrays in the NXT Executable File Specification. For example, if you want to create a multi-dimensional array, you use the opcode OP_ARRBUILD (...) (18 years ago, 28-Dec-06, to lugnet.robotics.nxt)
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| | Connect BT devices to the NXT without a passkey?
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Is it possible to connect BT devices to an NXT without using a passkey? The device I'm trying to use (a Nintendo Wii remote) doesn't use passkeys, AFAIK, since when I connect it to my PC I skip the pairing process. (18 years ago, 28-Dec-06, to lugnet.robotics.nxt, lugnet.robotics)
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| | Omni teaches physics.
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I've posted some project of mine, demonstrating how Steve Hassenplug's "Omni" can be used to teach some basic physics: (URL) Ziv NXTasy.org (18 years ago, 27-Dec-06, to lugnet.robotics.nxt)
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| | Re: Bluetooth and windows 2000
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I am using a Compaq (HP) nc8000 laptop which has a built-in BT device and it works fine with Windows 2000, so BT should be OK on W2K (with the right device). "Patrick Levy" <patrick@omiccron.com.br> wrote in message news:J7HJJI.6x3@lugnet.com... (...) (18 years ago, 24-Dec-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | PSP-Nx PS2 Controller block for NXT-G
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I've finally released my NXT-G block for mindsensors.com PSP-Nx PS2 controller interface. Details, download and installation instructions are here: (URL) Ziv NXTasy.org (18 years ago, 20-Dec-06, to lugnet.robotics.nxt)
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| | Arrays in NXT-G
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I've made a new NXT-G block for using numeric arrays in NXT-G. Details and download are found here: (URL) Ziv NXTasy.org (18 years ago, 20-Dec-06, to lugnet.robotics.nxt)
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| | Not eXactly C beta release news
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Today I am releasing a new beta of NBC and its highly popular high-level sister Not eXactly C (NXC). It is available via the NBC website ((URL) sure to also download the latest BricxCC test release for updated NXT support for both NBC and NXC ((URL) (...) (18 years ago, 20-Dec-06, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: NXT Firmware source code
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(...) Not to put too fine a point on it, but the 100 cycle limit is only on the lock bits, I think. This is specified at the extreme limits of voltage and temperature. At normal room conditions, actual NXTs were reflashed (which cycles the lock (...) (18 years ago, 19-Dec-06, to lugnet.robotics.nxt)
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| | Re: NXT Firmware source code
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"Steve Lane yahoo.co.uk>" <stevenrobertlane@<n...pamplease> wrote in message news:JABnK0.15z@lugnet.com... (...) Fortunately the most common failure mode is a reduction in the "longevity" of storage. Out of box, the Atmel ARM flash is specified to (...) (18 years ago, 18-Dec-06, to lugnet.robotics.nxt)
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| | Re: Has anyone figured out how to improve the NXT light sensor?
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(...) Yes. I didn't end up using it because speed ended up being more critical than precision, but for narrow lines I may go back to it. I suspect I might be able to use it to follow lines drawn by a black marker. (...) No. Well, kind of. I used a (...) (18 years ago, 18-Dec-06, to lugnet.robotics.nxt)
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| | Re: NXT candid camera
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(...) The second video is better, I think. Spike was always my favorite NXT robot. (18 years ago, 18-Dec-06, to lugnet.robotics.nxt, lugnet.mediawatch)
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| | Re: Has anyone figured out how to improve the NXT light sensor?
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Hi Geoffrey, (...) Detecting 1x1 plates should not be hard if they pass close to fiber optic end to efficiently block light. (...) I believe it's caused by the blue background I used that somewhat fooled my camera white balance. That said there is a (...) (18 years ago, 18-Dec-06, to lugnet.robotics.nxt)
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| | Re: Has anyone figured out how to improve the NXT light sensor?
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(...) Hi Brian, What kind of application needed this precision? Line follower? Did you need to shield the fiber to avoid stray coupling of light to the phototransistor? Philo (18 years ago, 18-Dec-06, to lugnet.robotics.nxt)
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| | NXT candid camera
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LEGO has posted two short movies of NXT robots playing tricks to people in a toys store... (URL) Don't forget to click on the thumbnail below to watch the second video. Have fun! Philo (18 years ago, 18-Dec-06, to lugnet.announce, lugnet.robotics.nxt, lugnet.mediawatch)
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| | Re: NXT Firmware source code
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(...) Ralph - I'll send them to you. If you want, mail me the byte format and I'll see if I can run a conversion. I presume it's in the vertical byte format that the screen uses? I did a full 256 character set that includes upper case, lower case, (...) (18 years ago, 18-Dec-06, to lugnet.robotics.nxt)
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| | Re: Has anyone figured out how to improve the NXT light sensor?
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(...) I've also used this the other way around, using a fiber optic cable to route light to the phototransistor itself. Do this with more than one light sensor, and you can have much better spatial resolution (the ends of two fiber optic cables can (...) (18 years ago, 18-Dec-06, to lugnet.robotics.nxt)
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| | Re: Has anyone figured out how to improve the NXT light sensor?
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"Philippe Hurbain" <philohome@free.fr> wrote in message news:JAF8tF.16H@lugnet.com... (...) That's good to hear. (...) I'll have to download and check out your program. It looks great! I'll also have to see if I can get the sensor to detect 1x1 (...) (18 years ago, 18-Dec-06, to lugnet.robotics.nxt)
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| | Re: Has anyone figured out how to improve the NXT light sensor?
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Hello Geoffrey, (...) First, don't worry about heat - such leds are really cool (thermically wise) devices! This one dissipates only about 20 mW... Your fiber optic cable idea is interesting... and it works well! I used the fiber optic cable (...) (18 years ago, 17-Dec-06, to lugnet.robotics.nxt)
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| | Feed Me! Feed Me! Feed Me!
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What can I say? This hungry little fellow is a very picky eater. He is hungry. If you don’t feed him often, he demands food. But when you do feed him, he says that the food is disgusting and spits it out. If you are looking for a compact robot with (...) (18 years ago, 17-Dec-06, to lugnet.robotics.nxt, FTX)
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| | Has anyone figured out how to improve the NXT light sensor?
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I'm looking for ways to build this sensor into a studless beam project of mine, and I was wondering, given it's large size and the comparative brightness of the LED used to light it, how can I use it to detect if an object is blocking a path? (...) (18 years ago, 16-Dec-06, to lugnet.robotics.nxt)
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