 | | What to do in route to BF...
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Wanna know what I did on my way to BrickFest? (URL) (19 years ago, 31-Aug-06, to lugnet.robotics, lugnet.events.brickfest, lugnet.robotics.nxt, lugnet.mediawatch)
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| | Re: TLG & MIT Media Labs spawn another product: PicoCricket
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(...) Hmm - sorry I was not clear there, I meant are there any plans to *sell* the boards seperate from the kit. Doh.. Danny (19 years ago, 31-Aug-06, to lugnet.robotics)
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| | Re: TLG & MIT Media Labs spawn another product: PicoCricket
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(...) <snip> I like the idea of this, the modules are neat. I have blogged it on OrionRobots (URL) - does anyone know how many output or input modules could be attached, and if there are any plans for seperate motor control boards? I strongly agree (...) (19 years ago, 31-Aug-06, to lugnet.robotics)
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| | Re: TLG & MIT Media Labs spawn another product: PicoCricket
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(...) Huh. That's kind of neat. It seems to run at least two tasks, and I like a lot of the output options (having the motor driver seperate from the brain is a good idea). It even has a text-based language option, and runs on both major platforms. (...) (19 years ago, 30-Aug-06, to lugnet.robotics, FTX)
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| | RE: TLG & MIT Media Labs spawn another product: PicoCricket
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Dennis Williamson said: "It's $250. I'd buy a Nxt and spend ten or twenty bucks at the craft store instead." Yes. But you're an adult and not the target market. The NXT and PICO cricket are two different products with different target market (...) (19 years ago, 31-Aug-06, to lugnet.robotics)
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| | Re: TLG & MIT Media Labs spawn another product: PicoCricket
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(...) See their own news page at: (URL) a number of entries from Google: (URL) $250. I'd buy a Nxt and spend ten or twenty bucks at the craft store instead. (19 years ago, 31-Aug-06, to lugnet.robotics, FTX)
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| | OLE automation object for brick communication
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I have posted an early beta of an OLE automation object which can be used to communicate with various LEGO programmable bricks (such as the NXT). For the NXT is relies on the Fantom SDK which can be downloaded from the LEGO NXTreme page. A sample (...) (19 years ago, 31-Aug-06, to lugnet.robotics)
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| | Yet another new BricxCC test release
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Since I last posted, I have finished (?) the implementation of Templates for all the supported programming languages in BricxCC. Templates for each language are stored in separate <Language Name>_templates.txt files in the Default sub-directory (...) (19 years ago, 31-Aug-06, to lugnet.robotics)
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| | inverted pendulum
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So, we started investigating more deeply the inverted pole challenge. As usual, everything will be uploaded as a journal on our web-site : (URL) suggestions? or Found mistakes? (19 years ago, 30-Aug-06, to lugnet.robotics)
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| | TLG & MIT Media Labs spawn another product: PicoCricket
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I searched news, and didn't see any mention of this ... (URL) PicoCricket> From the website: "The PicoCricket Kit is similar to the LEGO® MINDSTORMS™ robotics kits. MINDSTORMS is designed especially for making robots, while the PicoCricket Kit is (...) (19 years ago, 30-Aug-06, to lugnet.robotics, FTX)
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| | New BricxCC test release
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I have uploaded a new test release of Bricx Command Center (BricxCC) today. It will be officially released, if all goes well, in the next week or so. But you can get it now if you'd like to be able to use several more tool windows with your NXT. (...) (19 years ago, 29-Aug-06, to lugnet.robotics)
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| | GBC Website going down for maintenance
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All, All that and no a/c either. This 98 degree heat has finally killed my central air unit, and we are running hot! We need a new one and the server will need to be taken off line for a short while. I'll post a follow up to this message after I (...) (19 years ago, 29-Aug-06, to lugnet.robotics)
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| | Re: NXT->PC with Python
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I've been conjuring up some Python bindings around fantom. Would like to bypass the driver and use USB/BT directly (esp. for unix) but no luck so far. If anyone wants to contribute to this or get access to what I have so far please respond. -dbm (...) (19 years ago, 26-Aug-06, to lugnet.robotics)
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| | Re: NXT->PC Communication
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(...) Unfortunately, the Fantom driver library does not wrap the Direct Command functionality (i.e., the portion which lets you read sensor values and control motors) in a high level API. You still have to build the buffer and extract values from (...) (19 years ago, 25-Aug-06, to lugnet.robotics)
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| | Re: NXT->PC Communication
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(...) The Driver SDK (URL) provides a C interface as well as a C++ interface. You could call this C interface from VB to communicate with the NXT. geoff (19 years ago, 25-Aug-06, to lugnet.robotics)
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| | Bluetooth
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Hi, I bought an Airnet ABT101 to communicate with a NXT. According to your list it is compatible. I haven't been able to get it to work and was wondering if you (or whoever reported it as working) could tell me how to get it to work. Thanks, Jon Jon (...) (19 years ago, 24-Aug-06, to lugnet.robotics)
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| | NXT->PC Communication
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I'm trying to figure out a way from a VB program to interact with the NXT, via USB or BlueTooth. I was hoping I could just open a serial COM port after a BlueTooth connection was established, and just read the message and parse it, but that doesn't (...) (19 years ago, 24-Aug-06, to lugnet.robotics)
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| | bi-directional optical brick-to-brick communication
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Connection NXT to the RCX is not obvious. Here is a simple idea that we first realized as an experimental setup with 2 RCXs that can easily be turned into a bi-directional connection between intelligent bricks using only one port on each brick. The (...) (19 years ago, 23-Aug-06, to lugnet.robotics)
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| | Security Certificate on Robotics
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Every time I access the Robotics News page I am asked if I want to install an out-of-date security certificate for PayPal. Why is an out-of-date security certifacte for PayPal associated with the Robotics News page? TNX Joseph (19 years ago, 23-Aug-06, to lugnet.robotics)
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| | Re: Follow That Line - BrickFest Style
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(...) Cross-posting to .robotics -- oops! (19 years ago, 22-Aug-06, to lugnet.robotics, FTX)
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| | NJRC 2006 - Robots to go into water
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This year’s National Junior Robotics Competition (NJRC) 2006 is more exciting than ever. The organizers at the Singapore Science Centre has set some devilish missions including one that requires your robot to literally go into water. To a depth of 5 (...) (19 years ago, 21-Aug-06, to lugnet.robotics, lugnet.loc.sg)
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| | Re: Great Ball Contraption at BrickFest '06
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(...) I found this out. I bought five boxes of Zamors (50 balls) that were going cheap when the LEGO store in Kingston, UK, was closing down. Unfortunately, they're too big to go through something like the 2x2 shaft of a ball pump. I had to buy some (...) (19 years ago, 18-Aug-06, to lugnet.robotics)
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| | Re: BricxCC release 3.3.7.15
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(...) For the uninitiated, you can find it here: (URL) (19 years ago, 18-Aug-06, to lugnet.robotics)
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| | BricxCC release 3.3.7.15
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I have today made the current test release of BricxCC (with a few minor NBC-related changes) into an official release (version 3.3.7.15). I have also released a new beta of NBC (1.0.1.b5) which includes improvements in the built-in preprocessor (...) (19 years ago, 17-Aug-06, to lugnet.robotics)
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| | Re: Robolab
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You can download a demo of Robolab at LEGO education: (URL) is only version 2.0 which will show you quite a bit. The newest release, Robolab 2.9, will support the RCX and the NXT. Tonya (...) ---...--- Tonya L. Witherspoon College of Education, (...) (19 years ago, 14-Aug-06, to lugnet.robotics)
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| | Re: Follow That Line - BrickFest Style
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Is there any more information about date/time/location? I'll be bringing a robot for this one. (19 years ago, 17-Aug-06, to lugnet.events.brickfest, lugnet.robotics, FTX)
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| | Re: Mindstorms software
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There is also an issue with processors with Hyper-threading and RIS 2.0 : (URL) it is the case, then Lego has a patch : (URL) (19 years ago, 16-Aug-06, to lugnet.robotics)
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| | Re: Mindstorms software
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I had it working for a while on XP but then it would crash during the tutorials and the computer would not work correctly until I rebooted. I think the problem is with Quicktime 3.x. It did not seem to install it correctly as it reported that it was (...) (19 years ago, 16-Aug-06, to lugnet.robotics)
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| | RE: list of NXT sites
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(URL) (19 years ago, 15-Aug-06, to lugnet.robotics)
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| | Re: list of NXT sites
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(URL) (19 years ago, 15-Aug-06, to lugnet.robotics)
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| | Re: list of NXT sites
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(...) I think this URL is on your blog somewhere. At least it was at one point. (URL) Hansen (19 years ago, 15-Aug-06, to lugnet.robotics)
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| | Re: Mindstorms software
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Tom, In my last msg, I would like to clear up one misleading statement. I use Bricxcc and NQC. I don't like Graphic interfaces in lieu of "C" type programming language. Lamar "lledford" <lsrgroup@etcmail.com> wrote in message (...) (19 years ago, 15-Aug-06, to lugnet.robotics)
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| | list of NXT sites
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I got an email from a blog reader the other day requesting a summary of all the NXT-related sites I've come across. I figured I'd just post it here so I don't have to re-type it down the road. Please add URLs because I'm certain I've missed some. (...) (19 years ago, 15-Aug-06, to lugnet.robotics)
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| | Re: Mindstorms software
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(...) I'd back this. If there's a strong background with C, you could use NQC indeed, as Lamar suggested. If you are more into an object oriented approach, the java-based leJOS platfrom (www.leJOS.org) may be an option for you. Regards, Matthias (...) (19 years ago, 15-Aug-06, to lugnet.robotics)
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| | Re: Mindstorms software
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Tom, The answer is yes for sure if you have WindowsXP with SP1 and SP2 installed. I have many Windows98 and ME installed on my system and they all work well. All you have to do is to click on start -> Programs -> Accessories and finally click on the (...) (19 years ago, 14-Aug-06, to lugnet.robotics)
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| | Re: Robolab software which kit
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In article <5784415.post@talk.nabble.com>, Tom Stiles <lego- robotics@crynwr.com> wrote (...) I think it is only sold separately. It is distributed by Lego Education for schools and colleges, alongside variously themed kits that include an RCX and (...) (19 years ago, 14-Aug-06, to lugnet.robotics)
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| | Re: Fw: Robolab
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There's a question! I thought the same myself, so I looked around to see if there was something like an evaluation copy, but there were none. I ended up 'borrowing' a copy. If I really like it I may still buy it. linmix (...) (19 years ago, 14-Aug-06, to lugnet.robotics)
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| | Fw: Robolab
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I'm a newbie and am sure this has been answered before but why (as an individual developer) would I want to use Robolab as opposed to the individual Mindstorms Software that comes w/RCX? I guess the bottomline is - Is it worth an extra $69? On that (...) (19 years ago, 13-Aug-06, to lugnet.robotics)
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| | Re: Robolab
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(...) Try legoeducation.com (19 years ago, 13-Aug-06, to lugnet.robotics)
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| | Re: Robolab
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Thanks for the information. I am new and still learning. An example is that I bought a used kit off Ebay assuming Robolab would be included. Wrong, I was dead wrong (no fault of the seller just my inexperince). So now I am looking for a copy of (...) (19 years ago, 13-Aug-06, to lugnet.robotics)
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| | Re: Mindstorms software
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I just installed it on my XP machine and the tutoriasl seem to crash. This maybe be due to the fact that I have Quicktime 7.x installed instead of the 3.x from the kit. So far other things seem to be working but I have just started. I thought this (...) (19 years ago, 13-Aug-06, to lugnet.robotics)
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| | Robolab software
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I am new and still learning. An example is that I bought a used Mindstorms 1.5 kit off Ebay assuming Robolab would be included. Wrong, I was dead wrong (no fault of the seller just my inexperince). So now I am looking for a copy of Robolab. Was not (...) (19 years ago, 13-Aug-06, to lugnet.robotics)
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| | Robolab software which kit
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I just bought a Mindstorms 1.5 kit off Ebay and thought it came with Robolab but I was wrong. Question: What kits come with Robolab? Thanks for your time, Tom S. (19 years ago, 13-Aug-06, to lugnet.robotics)
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| | Re: Mindstorms software
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(...) (19 years ago, 12-Aug-06, to lugnet.robotics)
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| | Re: Mindstorms software
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(...) Should be OK - mine works on XP SP2. I don't remember doing any updates to get it to work, but that was a while ago. Fear not! Ed (19 years ago, 11-Aug-06, to lugnet.robotics)
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| | Mindstorms software
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Ok, another new user question (by the way, thanks for all that have answered my other questions): I bought a used Robotics Invention System 1.5 kit and since it was 1999 vintage and ran on Windows 98, I was wondering if it will run under Windows XP? (...) (19 years ago, 11-Aug-06, to lugnet.robotics)
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| | Re: Great Ball Contraption at BrickFest '06
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(...) Yes. So the bad news is a lot of standard GBC modules will break if they hit a Zamor sphere, so they really can't be used unconstrained in a GBC. the good news is there are a number of GBC modules that can process both easily, so if you build (...) (19 years ago, 11-Aug-06, to lugnet.robotics)
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| | Re: Great Ball Contraption at BrickFest '06
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(...) Hey Mat, Dont know if anyone has answered you or not, Janey, did the initial test, and others have since confirmed that NO, the 2 balls are different in size. A soccer ball will fit with room to spare between 2 studs. and a "horta egg" (1) is (...) (19 years ago, 11-Aug-06, to lugnet.robotics)
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| | Re: NXT compatible bluetooth adapters
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(...) Correction, Tried again with the Billionton and managed to get it to work. The trick is not to use the software that came with the adapter but rather to use the native drivers in WinXP. So uninstall the application software. Insert the adapter (...) (19 years ago, 9-Aug-06, to lugnet.robotics)
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| | Re: Robolab
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Tom: (...) RoboLab is standalone program (include LabView cutted) (...) Actual version for RCX is 2.5.4 you can buy at www.legoeducation.com (US$69) look under LEGO MINDSTORMS for Schools (Not NXT) The new upgrade 2.9 supports RCX and the new NXT (...) (19 years ago, 8-Aug-06, to lugnet.robotics)
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| | Robolab
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Keep in mind I am new at this. I ran accross a website today looking for information about Lego's Robolab. I have a few basic questions perhaps someone could answer. 1) Is Robolab a standalone program our must you have Labview installed too? 2) (...) (19 years ago, 8-Aug-06, to lugnet.robotics)
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| | Re: Great Ball Contraption at BrickFest '06
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(...) Hey, Just wondering, are the Bionicle radioactive green balls pretty much the same size/weight as the soccer balls? I have just come across a HUGE (about 500) stockpile of these things and thought they would be good for testing. I live in aus (...) (19 years ago, 8-Aug-06, to lugnet.robotics)
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| | Re: NXT compatible bluetooth adapters
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(...) Here's an addition to your list: Device MFG: D-LINK Device Model: DBT-122 Cost: $23.00 SGD Works fine on Win XP BTW, the DBT-120 has been phased out. This one didn't work: Device MFG: Billionton Device Model: USBBTC1A Cost: $29.00 SGD Nogo on (...) (19 years ago, 8-Aug-06, to lugnet.robotics)
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| | RE: NXT compatible bluetooth adapters
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Jordan said: (...) themselves: (...) is available at (URL) assuming that when they give an adapter the three-happy-minifig-head rating, that means they've tested it on BOTH OS X and Windows XP. Jeff Garbers (19 years ago, 8-Aug-06, to lugnet.robotics)
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| | Follow That Line - BrickFest Style
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Well folks, I made a simple (and somewhat silly) challenge the other day to Steve Hassenplug and Bryan Bonahoom while chatting about Line Following robots. The final outcome is another event at BrickFest this year. This event is not as formal as (...) (19 years ago, 8-Aug-06, to lugnet.events.brickfest, lugnet.robotics, FTX)
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| | Re: NXT compatible bluetooth adapters
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(...) LEGO has also posted a table of compatible devices they have tested themselves: (URL) (19 years ago, 8-Aug-06, to lugnet.robotics)
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| | NXT Robot Swarm at BrickFest -- featuring Bluetooth
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I'm interested in trying some experiments in (URL) swarm robotics>. The basic idea is that simple robots with simple programming can behave in complex ways, provided that there are 1.) a lot of them, and 2.) they can communicate locally in some (...) (19 years ago, 8-Aug-06, to lugnet.robotics, lugnet.robotics.nxt, lugnet.announce, lugnet.events.brickfest, FTX) !
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| | New NXT robot instructions posted on mindstorms.com
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Instructions and sample programs for a cuckoo clock and a sound bot (like a DJ system) have been posted: (URL) They both include custom .rso files. (19 years ago, 8-Aug-06, to lugnet.robotics.nxt, lugnet.robotics, FTX)
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| | Another Bluetooth adapter that works
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After plugging and unplugging the USB cable a million times, broke down this weekend and got a Bluetooth adapter. i could not find one on the list that had been confirmed to work. I ended up getting a Kensington Model 33348. It was not difficult to (...) (19 years ago, 6-Aug-06, to lugnet.robotics)
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| | Where to get parts?
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I see there are several places to get parts (in US). Any recommendations on which companies (people)? The biggest confusion I have so far is shipping cost. Still learning, Tom (19 years ago, 5-Aug-06, to lugnet.robotics)
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| | Re: 9748 Droid Developers CD
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(...) I think I have one at home that I could part with. If you're interested, send me an e-mail and I'll check if I still have it. -Elroy (19 years ago, 4-Aug-06, to lugnet.robotics)
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| | Re: 9748 Droid Developers CD
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With the kit? Bad joke, I know. You could try and explain to Lego that your cd has exploded into fragments and would like a replacement. If that doesn't work send me a mail off list and I'll see if I can help. Linmix (...) (19 years ago, 4-Aug-06, to lugnet.robotics)
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| | 9748 Droid Developers CD
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Where can I get a CD for the 9748 Droid Developers kit? Thanks for your time, Tom S. (19 years ago, 4-Aug-06, to lugnet.robotics)
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| | Site Refresh - New features added - NXT, RCX, 3rd party sensors...
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Got bored with my old site design and decided to redo it... Some things of interest: :: added new pics and info of mods I did to DomoinoBotNXT - it now uses 4 motors using the Mindsensors MotorMux MultiPlexer and NXT. I also programmed it in RobotC (...) (19 years ago, 4-Aug-06, to lugnet.robotics)
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| | Re: Upgrading RCX to 2.0
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(...) It's just software - otherwise they are essentially identical. Actually, the 1.0 hardware is the best because it has the external power socket - which was absent from the 1.5 and 2.0 RCX. The 2.0 set has a USB infrared tower - the older (...) (19 years ago, 3-Aug-06, to lugnet.robotics)
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| | Upgrading RCX to 2.0
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My first Mindstorms kit is the NXT but I have found some interesting projects for the previous generation RCX. My basic question is, is the upgrade from say a RCX 1.0 or 1.5 to 2.0 just a software update via your computer or is something that has to (...) (19 years ago, 3-Aug-06, to lugnet.robotics)
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| | NXT and ROBOLAB 2.9
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Here we are with our first NXT robot, a simple sonar wall-avoider. We are using ROBOLAB 2.9 as we want to continue with the ROBOLAB structures. This allows easy migration from RCX to NXT. ROBOLAB 2.9 uses a replacement firmware for NXT. Very (...) (19 years ago, 3-Aug-06, to lugnet.robotics)
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| | RE: NXT Motors -- Speed vs Power Level
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(...) I've done the same measurements/plots and found same linearity when 'brake' on inactive PWM cycles is used. Not so good when 'float' is used. This leads to a conundrum that I simply can't explain. If you use 'inactive brake' mode the motors (...) (19 years ago, 3-Aug-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: NXT Motors -- Speed vs Power Level
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I tried to plot power levels vs angular speed (in rad/s) and discovered goooood linearity ( remember how non-linear was RCX PWM)? The PID loop is a great idea, and I suppose that PID parameters should be tweakable. In SDK or HDK ( don't remember (...) (19 years ago, 3-Aug-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | robot positioning system
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RCX freaks surely will appreciate www.informatik.uni-k...arbeit.pdf !!! Cool ! (19 years ago, 2-Aug-06, to lugnet.robotics)
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| | Re: NXT Bluetooth on Intel Based Macs
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(...) Unfortunately no. NXT-G is currently a PPC app so it has to run under rosetta. Bluetooth is unavailable to apps running under rosetta. You can connect to it via bluetooth outside of NXT-G though if you write a program to communicate with it (...) (19 years ago, 1-Aug-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | NXT Developer Kits released!
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As prior LEGO press releases (URL) have stated>, the NXT developer kits would be available in August. And here they are! (URL) Software Developer Kit (SDK) Includes the NXT driver interface specification and necessary tools for creating third-party (...) (19 years ago, 1-Aug-06, to lugnet.robotics, lugnet.robotics.nxt, FTX)
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| | NXT Bluetooth on Intel Based Macs
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Has anyone got their NXT to work on one of the "new" Intel based Mac systems using the OSX operating system? Out of the box, I've heard NXT-G only supports USB connections on Intel Macs. But through standard OSX functionality you're able to set up a (...) (19 years ago, 1-Aug-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | Great Ball Contraption at BrickFest '06
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There has not been a great deal of public discussion about having a Great Ball Contraption at BrickFest '06, but there WILL be a GBC at BF06. If you missed your chance last year, when we had almost fifty modules, now is the time to start building. (...) (19 years ago, 31-Jul-06, to lugnet.robotics, lugnet.technic, lugnet.events, lugnet.events.brickfest, lugnet.robotics.events, lugnet.robotics.nxt, lugnet.robotics.rcx)
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| | NXT Motors -- Speed vs Power Level
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An explanation of when to use and when not to use the new NXT motor speed control option. The RCX supports only a motor power level control where the input is the percentage of time that power should be applied to the motor. The NXT supports not (...) (19 years ago, 30-Jul-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | Modified Alpha Rex
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Does anyone have any plans for modifying the basic Alpha Rex robot to allow him to pickup objects? Thanks for your time, Tom (19 years ago, 29-Jul-06, to lugnet.robotics)
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| | windows 2000 IR driver
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My qestion how do i get the IR communication driver for windows 2000? (19 years ago, 29-Jul-06, to lugnet.robotics)
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| | Re: Looking for Alternate Mindstorms 3804 projects
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(...) Awesome! Thanks so much. later, James Mathis (19 years ago, 28-Jul-06, to lugnet.robotics)
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| | Re: Looking for Alternate Mindstorms 3804 projects
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(...) Hello James, I have a few on my site: (URL) (all except Panobot1), (URL) (RIS simon, bottom of page) Philo (19 years ago, 28-Jul-06, to lugnet.robotics)
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| | Looking for Alternate Mindstorms 3804 projects
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I'm looking for alternate projects and building instructions that use only the LEGO bricks in one Mindstorms set 3804. For sale books or on-line websites, either is welcome. Any pointers? Thanks! later, James Mathis (19 years ago, 28-Jul-06, to lugnet.robotics)
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| | GBC video from BrickFest 2005 on DVD
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I'm planning on bringing a stack of DVDs with me to BrickFest this year containing (URL) my Great Ball Contraption video> from last year's event. This will be the original hi-res version (1.94 GB) and not the (URL) web version> linked to in that (...) (19 years ago, 26-Jul-06, to lugnet.events.brickfest, lugnet.robotics, lugnet.technic, FTX)
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| | Mindstorms Education NXT base set inventory available on Peeron
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Some people may be interested to compare with the shop edition. Yesterday I posted an inventory for the NXT Education base set, and it is now available: (URL) first inventory, so I hope I have not made any mistakes. :-) Many thanks to Philo, for his (...) (19 years ago, 25-Jul-06, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: Can Dacta 9751 be used with WindowsXP or Windows 2000?
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(...) (URL) I've been working on a .NET class> for it. I have the serial port communication finished and am working on threading the sensor polling. In C# you'll be able use my DLL something like this: using Mindstorms.ControlLab; //... ControlLab (...) (19 years ago, 25-Jul-06, to lugnet.technic, lugnet.robotics, FTX)
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| | External Power for an RCX 1.5
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I am attempting to hook an external power supply up to my RCX 1.5 so I can leave my bot running all the time. I have simply tried to hook up a 9V 800mA wall wart to the terminals, but it does not seem to work. Has anyone already tried this or (...) (19 years ago, 24-Jul-06, to lugnet.robotics)
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| | Fwd: Blogger post failed
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Can someone find out who is doing this and unsubcribe them? I get this every time I validate a lugnet message in robotics. I presume they have subscribed a blogging mail-in or something similar to the group. Danny ---...--- Forwarded message (...) (19 years ago, 24-Jul-06, to lugnet.admin.general, lugnet.robotics)
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| | Re: unsubscribing?
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Ben, It appears you are on the crynwr list, which is maintained seperately from Lugnet. Roc appears to be directly on Lugnet. Roc - If you really have huge problems unsubscribing, post to lugnet.admin and ask Suz for help. Ben - I recommend first (...) (19 years ago, 24-Jul-06, to lugnet.robotics)
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| | RE: unsubscribing?
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This is very painful: impossible. I tried, had to give up, and so had to resort to automatically dump these in my junk mail. How awesome and inspiring this mail group might be for some, it has turned into a hassle for me (and now also for you I am (...) (19 years ago, 23-Jul-06, to lugnet.robotics)
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| | Re: unsubscribing?
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(...) First thing is that this should probably have been posted to lugnet.admin or .offtopic if at all. You need to go to the (URL) website, and then click on "newsgroups", under this, select "News by mail". You will need your email address and a (...) (19 years ago, 23-Jul-06, to lugnet.robotics)
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| | Pictures of the NXT hardware
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Hi, today I opened up a new NXT from the US and made some photographs: (URL) Jürgen Stuber <juergen@jstuber.net> (URL) key fingerprint = 2767 CA3C 5680 58BA 9A91 23D9 BED6 9A7A AF9E 68B4 (19 years ago, 23-Jul-06, to lugnet.robotics)
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| | Re: Flex system hose
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(...) I had a look at the 1/8" plastic tubing in model railway shops and stalls at shows. I think it's ABS or polystyrene. I have no issues with cutting the tubes either :-) but I don't like painting stuff used as or with LEGO bricks. I think the (...) (19 years ago, 23-Jul-06, to lugnet.trains, lugnet.technic, lugnet.robotics)
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| | unsubscribing?
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sorry to post this here, but i really cant find an answer online how do i unsubscribe form the lugnet robotics list? r (19 years ago, 23-Jul-06, to lugnet.robotics)
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| | Re: Almost 300! And another Mindstorms Challenge! And more!
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OK. Let's start over again: What I should have said is that I believe that if you have two vehicles each weighing 2 lbs (the maximum allowed by the rules), one rolling, one "walking", the probablity of making a "stronger" forwardly mobile unit is (...) (19 years ago, 22-Jul-06, to lugnet.robotics)
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| | Re: Almost 300! And another Mindstorms Challenge! And more!
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(...) I see a high amount of torque required on the Lego motors also. In general, and if done poorly, all you have is a bot with a stalled motor for one minute running at full power. Clutch gears could help, but it would have to be done in such a (...) (19 years ago, 22-Jul-06, to lugnet.robotics)
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| | Re: Almost 300! And another Mindstorms Challenge! And more!
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(...) So you have (in essence) a walking robot - but you wouldn't want to halve your traction by having only half of your feet on the ground at any one time - you'd want to have a robot with LOTS of feet and pick up just some tiny fraction of them (...) (19 years ago, 22-Jul-06, to lugnet.robotics)
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| | Re: Almost 300! And another Mindstorms Challenge! And more!
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I read the entire thread, and the rules and ask the question: Why must it ROLL at all? If friction is the name of the game, and if the wheels (tires) are the parts that have the "stickiest" qualities, then why not maximize the surface area of those. (...) (19 years ago, 22-Jul-06, to lugnet.robotics)
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| | Re: RCX infra red sensitivity
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(...) Yes, the driver IC is current-limited to about 500mA (and thermal limited too), so it is very hard to destroy! (...) I have used NiMH batteries a lot on RCX, the only adverse effect I noticed is that the power available on motors is nearly (...) (19 years ago, 21-Jul-06, to lugnet.robotics)
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| | Re: RCX infra red sensitivity
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(...) I have not seen them on the RCX, but I have on other devices, where power transisotrs have died. Its all to do (I think) with the characteristics under load, and the fact that larger spikes in current may occur with rechargeables. If the IC (...) (19 years ago, 21-Jul-06, to lugnet.robotics)
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| | Re: RCX infra red sensitivity
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Hi Danny, (...) Have you seen real failures using some rechargeables batteries? I believe that the RCX motor driver IC is really foolproof, and I don't think anything could be destroyed using various kind of batteries (provided that the 9 or 10 (...) (19 years ago, 21-Jul-06, to lugnet.robotics)
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| | Re: RCX infra red sensitivity
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(...) Depending on the kind of rechargeables you are using, they generally have significantly different characteristics. They also often output a slightly lower voltage (about 1.2 or 1.3v per cell as opposed to the expected 1.5). If you have a (...) (19 years ago, 20-Jul-06, to lugnet.robotics)
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| | Re: RCX infra red sensitivity
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(...) Thanks for your replies. Both are RCX2 and I use the Robolab software. In Administrator / RCX settings you can set the RCX IR-power setting to high or low, but both were already in high. After some testing I found out that the main problem are (...) (19 years ago, 20-Jul-06, to lugnet.robotics)
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