 | | Re: Ping mode for US Sensor in NXT-G
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(...) You are using firmware version 1.04, right? 1.03 doesn't work well for multibyte reads. JB (18 years ago, 4-Mar-07, to lugnet.robotics.nxt)
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| | Re: Ping mode for US Sensor in NXT-G
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Hi Guy, You inspired me to do a ping using NBC, but I have run into trouble. I get a -35 (ERR_COMM_BUS_ERR) when I try to read more than one object reading. The code is long, so I'll just put the basics of what I am doing here to see if anyone (...) (18 years ago, 4-Mar-07, to lugnet.robotics.nxt)
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| | LEGO NXT Cable Mod
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Hi All, If you haven't purchased the LEGO NXT adapter cable for legacy sensors or outside real world circuit interfacing, then read my latest blog entry (URL). I illustrate a "no" cost way to modifying an existing NXT cable suitable for homebrew (...) (18 years ago, 4-Mar-07, to lugnet.robotics.nxt)
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| | Re: The rarest colour in LEGO - grey on a NXT?
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(...) The firmware's available, as is Rasmus Pedersen's update to compile it under GCC in Linux (or Cygwin on a PC): (URL) with a PDF document on building the toolchain: (URL) of this is hidden - you can find it if you search for it. I couldn't get (...) (18 years ago, 28-Feb-07, to lugnet.robotics.nxt)
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| | Ping mode for US Sensor in NXT-G
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I've written a detailed toturial on working in ping mode in NXT-G using I2C read/I2C write block and the US Sensor block. Read it here: (URL) shows how you can set the sensor to ping mode, read and display all 8 measurements and alternatly ping two (...) (18 years ago, 28-Feb-07, to lugnet.robotics.nxt)
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| | Re: The rarest colour in LEGO - grey on a NXT?
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(...) Until when? This is nice, but I'm curious now about the details. Which FW, for instance? And when can the rest of us join you in the sandbox? (18 years ago, 28-Feb-07, to lugnet.robotics.nxt, FTX)
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| | Performance chart for lithium rechargeables
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What can one expect out of the lithium rechargeables? One of my friends, an FLL coach, is reporting that their rechargeables seem to have "memory". Are there technical specs for the rechargeables? (18 years ago, 28-Feb-07, to lugnet.robotics.nxt)
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| | The rarest colour in LEGO - grey on a NXT?
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It seems some people thought I wasn't serious. A monochrome display is just black or white, isn't it? (2 URLs) And in case you're wondering, I can tell you that the foreground scenery does lazily scroll past the logo, in parallax with the background (...) (18 years ago, 27-Feb-07, to lugnet.robotics.nxt, lugnet.announce.moc, FTX) !
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| | Re: Optimizing NXT-G blocks with implementation VI constants
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(...) Excellent. Now if I can just pull myself out of the time-sucking hole of the family laundry (and other stuff) to learn it... Thanks for putting all this up, Guy. (18 years ago, 27-Feb-07, to lugnet.robotics.nxt)
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| | pbLua: how to download and run?
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Hi all, I'm still trying to get pbLua running on my brick. I've installed the LuaEclipse plugin which allows me to write (pb)Lua files in Eclipse with a decent editor support and written some programs. Yet, I still have absolutely no clue how to (...) (18 years ago, 27-Feb-07, to lugnet.robotics.nxt)
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| | Optimizing NXT-G blocks with implementation VI constants
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I've written some explanation on using constants in NXT-G implmentation VIs to optimize program size during compilation. You can read it here: (URL) Ziv NXTasy.org (18 years ago, 26-Feb-07, to lugnet.robotics.nxt)
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| | Re: NXT Reset
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I'm very glad to know you got it working again. Incidently, the '1.02' I was talking about isn't the version number on NXT-G itself, but on the USB driver it uses. If you haven't updated that, you can still occassionally get locking into 'clicking (...) (18 years ago, 25-Feb-07, to lugnet.robotics.nxt)
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| | Re: NXT Reset
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(...) As I was smiling myself to sleep past midnight, I was thinking of rummaging through my legos to find a part that would work. The antenna would do it. I'd even suggest to the powers that be, to stick one in the Educational set. It would work (...) (18 years ago, 25-Feb-07, to lugnet.robotics.nxt)
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| | Re: NXT Reset
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(...) It would be really cool if the girls could get OOBER back themselves. One way to do it is as follows: 1. Kill OOBER again. Not really, just hit the reset button for more than 10 seconds to force it into SAMBA mode again. 2. Let the girls do (...) (18 years ago, 25-Feb-07, to lugnet.robotics.nxt)
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| | Re: NXT Reset
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(...) Glory, glory! OOBER is alive! It took a couple of tries of the above procedure. It never registered as an Unknown Device. In fact, it never registered at all. Finally it came up as a Lego Device. At that point, I downloaded firmware and Ouala, (...) (18 years ago, 25-Feb-07, to lugnet.robotics.nxt)
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| | RE: NXT Reset
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(...) If you're using Windows, confirm that it is recognized as a USB device by Windows but that the device driver cannot be found. You do this by opening up the Windows "Device Manager" window and looking for an "Unknown Device". Of course before (...) (18 years ago, 25-Feb-07, to lugnet.robotics.nxt)
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| | RE: legWay
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(...) I can't speak for what actually got implemented. But Robolab's 2.9.2 firmware has almost all of the same features as the RobotC firmware. This includes the capability to customize the sensor scan rate from the default of 3 msec. The scan rate (...) (18 years ago, 25-Feb-07, to lugnet.robotics.nxt)
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| | Re: NXT Reset
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(...) I think my laptop has 1.02. I updated eveything when I needed the compass block. Although, I searched and couldn't confirm the NXT-G version number. Must not have looked hard enough. I've tried resetting another of the Educational NXT's and (...) (18 years ago, 25-Feb-07, to lugnet.robotics.nxt)
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| | Re: NXT Reset
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(...) It sounds like it's stuck in update mode (SAMBA boot mode). By any chance, have you downloaded and installed the 1.02 driver patch from LEGO? (URL) hoping you say you haven't, and installing it fixes this). (18 years ago, 24-Feb-07, to lugnet.robotics.nxt)
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| | NXT Reset
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I've tried to resusitate OOBER several times. I have it plugged into the USB. NXT software is ready to download firmware. Following page 74 of the User Guide. I hit the reset, hold OOBER to my ear and hear it's "heartbeat". Downloading firmware (...) (18 years ago, 24-Feb-07, to lugnet.robotics.nxt)
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| | legWay
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Steve H. 's legway, needless to say, is very cool. I wonder if I may obtain expertise ideas on the following: . I wonder if anyone has tried this with the regular RCX sensors + Robolab2.9.2 using the Optimizer feature. The Optimizer is supposed to (...) (18 years ago, 24-Feb-07, to lugnet.robotics.nxt)
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| | Re: Surveying MTBF of Edu NXTs
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(...) Thanks Folks. I'm just finishing up a class for 9 & 10 year olds. When I get home, I'll try resetting and upgrading OOBER. Without the tears and emotions breaking around me, I should be able to isolate the bug. (18 years ago, 24-Feb-07, to lugnet.robotics.nxt)
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| | Re: Surveying MTBF of Edu NXTs
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(...) Ouch, I understand quite well, actually*. But I agree with John, it sounds like the NXT might be in firmware update mode. If you *haven't* already done it, download the latest firmware (1.04), and a patch for the driver (1.02), from LEGO's (...) (18 years ago, 24-Feb-07, to lugnet.robotics.nxt)
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| | Re: Surveying MTBF of Edu NXTs
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(...) It sounds to me like the NXT is simply in firmware download mode. There is no visible reaction on the NXT once it is in that mode but you should hear a faint clicking sound. That's what the reset button does - i.e., it puts the NXT into (...) (18 years ago, 24-Feb-07, to lugnet.robotics.nxt)
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| | BricxCC & NBC/NXC News
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The Sourceforge shell service finally came back on line today so I was able to update my web pages again. The official links to beta 27 are up now. I have also uploaded a revision to Danny Benedettelli's fantastic NXC Tutorial (and sample code). And (...) (18 years ago, 24-Feb-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Surveying MTBF of Edu NXTs
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(...) Two 6th grade girls at Ladd Acres Elementary in Hillsboro Oregon USA, named the NXT, "OOBER" out of the box. They used a rechargeable until that needed recharging. I replaced their original rechargeable with another one. Today, about 30 (...) (18 years ago, 24-Feb-07, to lugnet.robotics.nxt)
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| | RICScript
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You may not find this terribly interesting, but I have implemented an RIC to Text converter (a decompiler, if you will) which generates source code for an RIC file in a text format. Soon BricxCC will have support for writing and (...) (18 years ago, 24-Feb-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Surveying MTBF of Edu NXTs
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First, let me repeat the request for specifics. I *have* had some reports of indivdual sensors failing (and being replaced by LEGO), as well as the rare motor that seems a little bit to high in internal friction (and, again, at least addressed by (...) (18 years ago, 23-Feb-07, to lugnet.robotics.nxt)
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| | Re: Surveying MTBF of Edu NXTs
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(...) Hi Fly, I suspect that your NXTs are fine. On the other hand, I suspect your rechargeables are toast; there is a big difference between those two things. An underpowered NXT will behave erratically, and therefore, as the battery looses its (...) (18 years ago, 23-Feb-07, to lugnet.robotics.nxt)
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| | Re: Surveying MTBF of Edu NXTs
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(...) You should be able to estimate time-to-failure in the presence of your censored data; people do this all the time in engineering and cancer and many other fields. Steve H seems surprised at the fact that any NXT died and I must say that I am (...) (18 years ago, 23-Feb-07, to lugnet.robotics.nxt)
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| | Re: Surveying MTBF of Edu NXTs
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(...) What exactly do you mean by "Dead"? I've never seen any NXTs die. I've been told it's possible to reprogram the flash memory enough to wear it out, but that required someone writing a PC program that did nothing but reprogram the flash, and (...) (18 years ago, 23-Feb-07, to lugnet.robotics.nxt)
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| | Surveying MTBF of Edu NXTs
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I have 11 commercial (C) and 25 educational (E) NXT sets. The 11Cs are doing fine after about 4 battery changes. They have been in use since July 2006 for about 60 class hours. I'm sure there's a more empirical way to calculate how much run-time 4 (...) (18 years ago, 23-Feb-07, to lugnet.robotics.nxt)
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| | NXC Counters
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From the NXC Guide: ---...--- TachoCount: Return the internal position counter value for the specified output. BlockTachoCount: Return the block-relative position counter value for the specified port. RotationCount: Return the program-relative (...) (18 years ago, 23-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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(...) Hmm, this is interesting. The capabilities that aren't used by the current firmware are very curious. I can see the purpose of multiple sprites and draw modes though. With that, you could do masked graphics. A mask sprite would be drawn first (...) (18 years ago, 22-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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(...) Thanks John. I find it a problem that NXTasy posts are not signed - I didn't know you were the author... Philo (18 years ago, 22-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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(...) Unfortunately, I made several factual errors in my post on NXTasy the other day. I have attempted to correct those errors today by editing the existing post. Please make sure you read it again if you read it yesterday or earlier this morning. (...) (18 years ago, 21-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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(...) Yikes - I had no idea it was that convoluted! I want to put on some new graphics functions but I think I'll devise my own file format for those. I'll see if it's possible to hijack DrawGraphic to test it at least, but supporting new opcodes (...) (18 years ago, 21-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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(...) These variables do get used by the existing RIC format. I could tell you what they mean but then I'd have to kill you. :-) It definitely is not a good idea to try to use them for something completely different. It seems better to just add a (...) (18 years ago, 21-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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Hello Jason, (...) There was a paper about RIC on NXTasy a few days ago: (URL) (18 years ago, 21-Feb-07, to lugnet.robotics.nxt)
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| | Extending the firmware through DrawGraphic()
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Having made an earlier suggestion about using file names to extend the capabilities, I've looked into it a little further and found something very useful. The 'NXTDrawPicture', or 'DrawGraphic' command can take an arbitrary array of variables. The (...) (18 years ago, 21-Feb-07, to lugnet.robotics.nxt)
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