 | | Re: Using NXT Port 4 EIA-485
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Hi Christian, (...) the RS-485 interface is directly connected to the AT91SAM7S USART, so you can choose the bit rate quite freely. (...) No, it is not necessary, P-Net is just a field bus which seems to be popular in Denmark, there are others which (...) (18 years ago, 10-Apr-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: EggArt - a 4-colour Easter egg painting robot
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(...) Wonderful. This is not the typical Mindstorms Printer, of course ^_^ Congratulations David! (18 years ago, 10-Apr-07, to lugnet.robotics.nxt)
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| | Re: Using NXT Port 4 EIA-485
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(...) Hi, halfduplex is not the problem when connecting the NXT to an external MCU. My problem is the bitrate of 921,6 kbits/s. Simple cheap MCU like ATMega didn't support this bitrate (as far as I know). To add an external devices (e.g MCU+SD-Card (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: Using NXT Port 4 EIA-485
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(...) Hi John. I must have misunderstood something I was told a while back which went along the lines of "there isn't enough time to implement support for this feature". Perhaps there was some time after all ;) Do you know how large the OutBuf and (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | Re: EggArt - a 4-colour Easter egg painting robot
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(...) Congratulations on getting your egg painting robot done! Looks like you got your pen mechanism working exactly as you planned. Very nice! (...) What do you mean; I think the eggs are beautiful! But I think you should write "Happy Easter" on (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | RE: NXT external storage
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(...) Yes. RobotC already supports an optional "fast" mode that is five times faster transmission when reading a single byte. For reading multiple bytes from an I2C device, RobotC is about 15 times faster than the NXT-G firmware. There are a couple (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | Re: Using NXT Port 4 EIA-485
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(...) Do you think it is possible to read/write binary and ascii data to this device or is there a special protocol neccessary ? What about bitrate of EIA-485 device ? Is it possible to adjust bitrate to anything more usable (9600, 38400, 115200) ? (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | Re: NXT external storage
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(...) Yes, 9600 bits/s is really slow for storage access. Is there a known way to increase the clock and transferrate of I2C ? Christian (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | Re: EggArt - a 4-colour Easter egg painting robot
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(...) The promised videos (1-2Mb each): (URL) at 11Mb: (URL) David Schilling (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | Re: Using NXT Port 4 EIA-485
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(...) What is not supported about this port in the standard NXT firmware? You can read from it and write to it using the IOMapRead and IOMapWrite syscall functions. Looking at the firmware source code it certainly looks like everything is setup to (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | EggArt - a 4-colour Easter egg painting robot
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Just in the nick of time, the day before Easter, I completed building a 4-colour NXT Easter egg painting robot. I started building it several months ago, when I thought I'd have plenty of time before Easter. Of course, at about the 85% complete (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt, lugnet.org.us.smart) !
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| | RE: Using NXT Port 4 EIA-485
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I've looked at implementing an interface for RobotC, but I've always struggled with why bother since there are no applications that connect to it. I wish LEGO had implemented an option to provide a logic level "RS-232" UART on port four. Yes, I (...) (18 years ago, 8-Apr-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: Using NXT Port 4 EIA-485
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(...) As far as I know, there isn't any support for this interface in either the standard firmware or any of the other third party firmware implementations. The interface runs at 921,600 bps so it will be fast enough to be really useful. I am hoping (...) (18 years ago, 8-Apr-07, to lugnet.robotics.nxt)
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| | Re: NXT external storage
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(...) It may work, but it will be very slow. The NXT runs the i2c ports at only 9600kb/s, so the data will trickle to the NXT very slowly. (...) I think that the answer is yes. (...) (18 years ago, 8-Apr-07, to lugnet.robotics.nxt)
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| | Re: NXT BrickSorter - Sorting bricks with a HiTechnic colour sensor.
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(...) Thx for the comments. The design as it stands right now would not allow the sorter unit to rotate all the way around - not a bad idea though. I wanted to challenge myself with the angle idea on the sorter itself (2 rows of cups). With larger (...) (18 years ago, 8-Apr-07, to lugnet.robotics.nxt, FTX)
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| | Using NXT Port 4 EIA-485
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Hi, is there currently any software-support (pbLua, NXT-G, NXJ) for NXT Port4 highspeed serial communication (EIA-485) ? This port can be used for connecting some new hardware (camera, SD-Card-storage) to the NXT... Thanks for more informations Bye (...) (18 years ago, 7-Apr-07, to lugnet.robotics.nxt)
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| | Wishlist for next pbLua Beta
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Hi, current version of pbLua (Beta-3) works very well for me :D But now I have some more wishes for the next versions: 1. Filesystem (storing chunks and data at NXT) 2. Console via BT (I have autonomous robots with cable) 3. Audio e.g (...) (18 years ago, 7-Apr-07, to lugnet.robotics.nxt)
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| | NXT external storage
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Hi, what are you thinking about extending the NXT with an external storage for more sounds or karthographic data ? A simple hardware interface NXT==>I2C==>IOPort==>SD-Card is not the problem, but how can this supported by operating system (e.g (...) (18 years ago, 7-Apr-07, to lugnet.robotics.nxt)
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| | Re: NXT BrickSorter - Sorting bricks with a HiTechnic colour sensor.
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(...) Cool stuff, and a very elegant design. I was wondering if there is a reason you don't have cups all the way around the sorter? Have you tried to put the color sensor inside a housing to cut down on ambient light? And the real question the (...) (18 years ago, 7-Apr-07, to lugnet.robotics.nxt, FTX)
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| | NXT BrickSorter - Sorting bricks with a HiTechnic colour sensor.
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What better idea to come up with to test the HiTechnic colour sensor then to build a LEGO brick sorter. So, that’s what I did. After quickly learning that the sensor does not read colour from a distance (in my excitement I forgot to read the (...) (18 years ago, 7-Apr-07, to lugnet.robotics.nxt)
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| | pbLua: Ultrasonic Sensor usage
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Hi, I'm trying to use the us-sensor with pbLua, but without success. The result of reading a byte from sensor is allways 0. What means at HDK I2C Communication protocol: Read measurement Byte 0 : 0x02 0x42 R+0x03 (what is R+0x03) ??? Any idea ? (...) (18 years ago, 7-Apr-07, to lugnet.robotics.nxt)
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| | NXTRC: Using Bluetooth with NXT under Linux.
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Hi, I wrote a program that allows to communicate with a NXT brick under Linux using a Bluetooth link. With this program you can upload and download programs run them and other stuff. You can find more info and get the source at (URL). Our site is (...) (18 years ago, 6-Apr-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | Logging from NXT to PC via Bluetooth
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I have been working for some time on an advanced NBC application that sends/logs data over Bluetooth from the NXT to a PC. The header for the file explains, in detail, how it works, so I'll just paste it here. It is compiled with a pre-released (...) (18 years ago, 6-Apr-07, to lugnet.robotics.nxt)
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| | NXT Bluetooth Message Performance
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Any have any experience with communicating over Bluetooth with 'master' connected to more than one NXT? If so, can you share any performance results? My guess is that it is very slow. My expectation is that when there is one master NXT and two slave (...) (18 years ago, 4-Apr-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: NXT Reset
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(...) As I was rummaging through a few boxes of parts, I gathered up all the antenna I could find. I also tried out other pieces that would work to reset an NXT. It seems that anything that fits into a minifig's hands or slip inside a pin or (...) (18 years ago, 31-Mar-07, to lugnet.robotics.nxt)
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| | Fixed-point for NXT-G
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I posted an NXT-G block which implements fixed-point arithmetic operations. Details and download here: (URL) Ziv NXTasy.org (18 years ago, 30-Mar-07, to lugnet.robotics.nxt)
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| | Re: Extreme NXT: Extending the LEGO Mindstorms NXT to the Next Level
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(...) In case any of you were waiting, the book is now shipping from Amazon. Preview information at www.extremenxt.com/books.htm. Michael Gasperi (18 years ago, 29-Mar-07, to lugnet.robotics.nxt)
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| | Re: Enhanced standard NXT firmware
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(...) That's great news, David. I'm glad that you are having success using the new CommExecuteFunction system call. I haven't had a chance to test it at all yet personally but I was very confident that it would just work seeing as how exposing it (...) (18 years ago, 28-Mar-07, to lugnet.robotics.nxt.nxthacking, lugnet.robotics, lugnet.robotics.nxt)
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| | Re: "Advanced" palette guide for Robolab 2.9.2 ?
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(...) You may want to check out the RoboBooks here: (URL) (18 years ago, 28-Mar-07, to lugnet.robotics.nxt)
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| | RE: "Advanced" palette guide for Robolab 2.9.2 ?
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I have difficult in locating manual for some sort of guide for the new functions such as: - "Detective" under the "Projects" menu bar - Icons in the "Advanced" Palette. Well, I'm sure I can play with it and find out how to use it. However, a guide (...) (18 years ago, 28-Mar-07, to lugnet.robotics.nxt)
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| | Re: Enhanced standard NXT firmware
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"John Hansen" <afanofosc@comcast.net> wrote in message news:JF0sGr.M2w@lugnet.com... (...) implement (...) big snip Great job John. And thank you especially for CommExecuteFunction. I couldn't believe that Lego didn't allow a way to make a Bluetooth (...) (18 years ago, 28-Mar-07, to lugnet.robotics.nxt.nxthacking, lugnet.robotics, lugnet.robotics.nxt)
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| | Edu NXT #9797 Inventory count
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Have you ever heard the story of the Grandma who wanted a new washing machine? Grandpa was a such a good repairman, that he kept the old machine going, and going, and going. Finally, Grandma got an idea. While Grandpa had the machine stripped down (...) (18 years ago, 23-Mar-07, to lugnet.robotics.nxt)
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| | Memory Level NXT-G Block
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Here's a block to monitor amount of NXT Flash memory available: (URL) Ziv NXTasy.org (18 years ago, 22-Mar-07, to lugnet.robotics.nxt)
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| | Re: Running NBC/NXC on a Mac (OSX)
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(...) Yeah, I know. My command line parameter parsing code is pretty yucky. :-) John (18 years ago, 22-Mar-07, to lugnet.robotics.nxt)
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| | Re: Running NBC/NXC on a Mac (OSX)
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(...) Unix nerds would say it shouldn't be there in the first place ;) ROSCO (18 years ago, 22-Mar-07, to lugnet.robotics.nxt)
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| | Re: Running NBC/NXC on a Mac (OSX)
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In lugnet.robotics.nxt, Brian Davis wrote: ... (...) Not too sure about NBC (I'd classify for clueless newbie too), but if you didn't see it already, there is also a tool you might find handy if you happen to have bluetooth on your Mac: (URL) It (...) (18 years ago, 22-Mar-07, to lugnet.robotics.nxt)
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| | Re: Running NBC/NXC on a Mac (OSX)
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(...) I accidentally left off the "=" after -I. ./nbc -I=/usr/local/include program.nxc -O=program.rxe Sorry about that. John Hansen (18 years ago, 22-Mar-07, to lugnet.robotics.nxt)
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| | Re: Running NBC/NXC on a Mac (OSX)
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(...) Here's a really simple way to use NBC/NXC on a Mac: (URL) you want to execute the compiler yourself then you just open a terminal window, change directory to your source code path, and execute nbc like this: nbc program.nbc -O=program.rxe or (...) (18 years ago, 22-Mar-07, to lugnet.robotics.nxt)
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| | Running NBC/NXC on a Mac (OSX)
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Assume I'm an idiot. As many will tell you here, this is at many times a reasonably safe assumption. Yes, I know who you are, stop snickering. How do I work NBC/NXC under OSX? When I download the latest package and double-click the app, it opens the (...) (18 years ago, 22-Mar-07, to lugnet.robotics.nxt)
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| | Re: Adding syscalls/opcodes to NXT-G
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(...) John - I know you don't like this and I agree that the best solution is NI changing their compiler to allow extending firmware with new syscalls. The way things work, I'm afraid, this will not happen anytime soon. I'm trying to suggest (...) (18 years ago, 22-Mar-07, to lugnet.robotics.nxt)
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