 | | Re: What batteries are required for the RIS 2.0 RCX?
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AA(1.5v) x 6 Zhengrong RCX COntrolled LEGO Train Projects (URL) lugnet.robotics, craig_morris@fenetech.com writes: (24 years ago, 27-Dec-01, to lugnet.robotics)
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| | What batteries are required for the RIS 2.0 RCX?
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(24 years ago, 27-Dec-01, to lugnet.robotics)
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| | Re: startin with robolab
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Do you have the building parts to an Intelligent House set? Do you have the illustrated building instructions? Do you have a RCX and an IR Tower? Do you have the RoboLab software? (...) (24 years ago, 27-Dec-01, to lugnet.robotics.rcx.robolab)
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| | RE: NQC with USB Port
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-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: multipart/alternative; boundary="----_=_Nex....7B4D8A8E" Content-Length: 2823 (24 years ago, 26-Dec-01, to lugnet.robotics)
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| | Re: Vision Command
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I would have tried that, but there was nowhere to choose where it looks for the files. It prompts for the windows CD and has only one button, "ok". Clicking on the OK button without the windows CD in the drive does nothing. Thanks QBF (...) (24 years ago, 26-Dec-01, to lugnet.robotics.rcx)
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| | Re: Remote servo motor controller for RCX
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Not yet still need to get some bugs out in program. but should be up by new year. you can buy these servo motors from any ronot store like Acroname or Mr robot. can cost any where from $13 and up ( for good durable servo) for general purpose $13 (...) (24 years ago, 26-Dec-01, to lugnet.robotics)
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| | NQC with USB Port
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Hi all there, my son got a RIS2 were the IR Power uses a USB connector. We saw that NQC only supports COMs. Has anybody an idea how to use NQC with USB? Is there possibly any patch or USB Version? Thanks for you help Peter (24 years ago, 26-Dec-01, to lugnet.robotics)
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| | Re: Vision Command
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(...) Jason, many of the files are probably in the CAB files on your hard drive. When it asks you for a missing file from your WIN98 disk, refer it to C:\windows\options\cabs. Vision Command works fine with Win98. Jerry (24 years ago, 26-Dec-01, to lugnet.robotics.rcx)
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| | RL2.5 crashes on Win95
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Hi all, Has anyone got RL2.5 working on Win95 OSR1? I just got my copy for Xmas and it crashes after displaying the main menu screen :( Just for fun (haha!) I tried on another machine, also installed with Win95 and got the same result - looks like (...) (24 years ago, 26-Dec-01, to lugnet.robotics.rcx.robolab)
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| | Vision Command
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I just got Vision command for christmas. Because I am out of town I tried it on a laptop. The setup required the windows 98 CD. I have a CD with the windows 98 setup but it is not the original CD and the VC setup didn't like it. Is there any way to (...) (24 years ago, 25-Dec-01, to lugnet.robotics.rcx)
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| | Re: Using IR Ports on laptops
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(...) Hi Ben, have a look at : (URL) Try searching lugnet next time ;-) (24 years ago, 25-Dec-01, to lugnet.robotics)
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| | Using IR Ports on laptops
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I have a IR port on my laptop. Is there any way of using that to communicate with the RCX? BEN (24 years ago, 26-Dec-00, to lugnet.robotics)
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| | Re: Need Advice on Getting Started
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Conrad, hands down, don't hesitate to get a "real" RIS set. Really. You will be disappointed with any other, and you won't be with the RIS. You should be able to find it on sale. I heard of them going for $130 at BestBuy near here, and this was the (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Thanks! Re: Expansion sets questions
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Thanks for all the info online and off. He'll be getting the expansion sets only for now. We'll work on getting the RIS this spring. He's a smart kid - aren't all kids of AFOL's ;) so it sounds like he'll enjoy the sets just fine. Julie (...) (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Re: RIS2 Upgrade on W95 & Pentium(I)
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In article <003a01c18c97$47b0bd...42@norma>, lego- robotics@crynwr.com says... (...) What CPU do you have? (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | multitask in legOS
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Someone can help me about multitask in legOS i don't understand a programm for that don't compile .... please help me nanobapt (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Re: Newbie questions about RIS 2.0
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(...) I don't know the answer to this - but if your son is 'into' programming and computers, you could consider just dumping the Lego software and using NQC. With the Lego environment, you get to "program" by dragging cute little icons around - and (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Re: RIS2 Upgrade on W95 & Pentium(I)
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Just a little more info (hope it is worth somthing)... I use RIS 2.0 with my RIS 1.5 serial tower. I am however running Win98. But my point is that RIS 2.0 does not require the USB tower. Jona ----- Original Message ----- From: "Trevyn Watson" (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Newbie questions about RIS 2.0
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My son has been saving for an RIS for about 7 months and we decided to put him over the top for Xmas. After I got the thing home, I noticed that the min req said Pentium II/233 Mhz or better. I have only a 1997/8 vintage Dell with 200 MHz Pentium (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Re: Need Advice on Getting Started
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(...) Well, the Robotics Discovery Set (RDS) is way better than the StarWars themed sets because the Scout is actually a useful part - and you get two motors and some sensors that you can re-use later. The microscout is (IMHO) a pile of junk. It has (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Re: Home-made Air Muscle is Here!
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But how do you build it? It seems like a plastic net surronding a bag of some type, and then plastic pieces to connect it to Technic beams. Now, what makes the plastic boxes, what is the bag made of, etc? Perhaps I should e-mail Christophe? Andy (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Re: Need Advice on Getting Started
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You will have a good time with the Droid Developer. It will give you some experience and help you find out if your really interested in robotics, If you become an addict, you will want the RIS and everything else you can get your hands on. A second (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Re: Need Advice on Getting Started
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I've seen several of the kits come through Ebay over the past couple of weeks. I bought a 2.0 kit for $150 myself abotu 2 weeks ago. John Rigdon (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Thanks you all
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I really want to say thanks To Rick Sellers, Rainer Balzerowski,& Bob Fay Who offered me there help The file has been found Anyway have you (& all lugnet members) all a Merry Christmas & A Happy New Year From me Love Lego We live to build Yaron Dori (24 years ago, 24-Dec-01, to lugnet.robotics.rcx)
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| | Need Advice on Getting Started
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I'd like some advice on what set would be a good one to start with. As I am not sure how much I'll get into this, I'd like to avoid th $150 to $200 for the RIS 1.5 or 2.0 systems. I've seen the Droid Development Kit, 9748 I think, at some stores for (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Re: Mario's new book...
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(...) Thanks Elijah! (...) :-))) Well, we had to. Couldn't think of any other time and cost-effective solution to test it during the hot Italian summer :-) Ciao Mario (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Re: startin with robolab
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(...) There are actually two versions of the Lego Dacta Intelligent House. The earlier version #9707 is packaged with the Control Lab Serial Interface B (#2001304) which uses the Lego Logo software. It can also be used with Lego Engineer 2.0 (which (...) (24 years ago, 24-Dec-01, to lugnet.robotics.rcx.robolab, lugnet.dacta)
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| | Re: Home-made Air Muscle is Here!
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"c s soh" <cssoh@singnet.com.sg> wrote in message news:3C267F21.1CA9D0....com.sg... (...) Iain (24 years ago, 24-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| | Re: Home-made Air Muscle is Here!
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----- Original Message ----- From: "c s soh" <cssoh@singnet.com.sg> To: <lego-robotics@crynwr.com> Sent: Sunday, December 23, 2001 8:04 PM Subject: Home-made Air Muscle is Here! (...) Hi: Very nice. I am new to this great hobby. Please give an (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Re: Home-made Air Muscle is Here!
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I saw this before - is there some sort of building instructions there now? I can't see the site because your alloted bandwith has been exceeded. Andy ----- Original Message ----- From: "c s soh" <cssoh@singnet.com.sg> To: <lego-robotics@crynwr.com> (...) (24 years ago, 24-Dec-01, to lugnet.robotics)
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| | Home-made Air Muscle is Here!
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Season's Greetings to all pneumatics fiends, For DIYers, Christophe's home-made air muscle is here: (URL) C S Soh CSSoh's Lego Pneumatics (URL) where air is power! (24 years ago, 24-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| | startin with robolab
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Hello, Im new with Robolab and Lego Dacta. And I didn't undestand if Robolab can be used with all Lego Dacta products, such as theIntelligent House (with what I'm working). If someone could give me a hand as soon as possible, it would be great. (...) (24 years ago, 24-Dec-01, to lugnet.robotics.rcx.robolab)
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| | Re: Remote servo motor controller for RCX
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(...) All Radio control servo's work on the same voltages. The analog ones are all compatible - you probably want to stay clear of the digital ones. Shaft sizes (and number of 'teeth' on the end of the axle) are very variable - but AFAIK, none of (...) (24 years ago, 23-Dec-01, to lugnet.robotics)
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| | Re: Remote servo motor controller for RCX
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(...) It might be one of these as shown here: (URL) a shaft the right size, need to know that the voltage/current conditions will be right...! Perhaps the vendor will recommend?? Jerry (24 years ago, 23-Dec-01, to lugnet.robotics)
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| | Re: Remote servo motor controller for RCX
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(...) THey appear to be the standard servomotors that are used for radio controlled model planes and such. They cost about $15 to $20 for the cheaper kind and whatever you want to pay for the better ones! You should be able to get them wherever (...) (24 years ago, 23-Dec-01, to lugnet.robotics)
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| | Re: Remote servo motor controller for RCX
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(...) And... we need to know where to get the motors, and how much they might cost. Jerry (24 years ago, 23-Dec-01, to lugnet.robotics)
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| | Re: Help needed
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Nowhere ! The Spirit.ocx is included in the CD content from RIS 1.0 and 1.5. It was available at the lego homepage, but it's not included in the LEGO SDK anymore. (Or am i missing something ?) Since the RIS 2.0 has an USB Tower you can't use it with (...) (24 years ago, 23-Dec-01, to lugnet.robotics.rcx)
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| | Re: Lego patents
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(...) The basic lego brick patent has expired (hence MegaBloks and other low grade wannabe's). Dunno about your other questions though. ---...--- Steve Baker ---...--- Mail : <sjbaker1@airmail.net> WorkMail: <sjbaker@link.com> URLs : (8 URLs) (24 years ago, 23-Dec-01, to lugnet.robotics)
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| | Re: vision command and xp
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This is what I came up with, I loaded the win2000 logitec drivers that came on the vc disk and and made shure the camera worked. I loaded the vc software on to a p133 laptop , the laptop does not have usb so I cancled when it wanted to install the (...) (24 years ago, 23-Dec-01, to lugnet.robotics)
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| | legOS ....
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i try to learn legOS and now i try to understand mutitask but the problem is that legOS don't want to compile my program cause he don't know button_state .... ----- Original Message ----- From: "mike mcfarlane" <mcfarlane_mike@hotmail.com> To: (...) (24 years ago, 23-Dec-01, to lugnet.robotics)
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| | Lego patents
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I will be teaching a course on Information Technology Law in the Computer Science Department at the College of Charleston next semester. Having recently purchased (mainly for my own entertainment) a Lego Mindstorms Robotics Invention kit, it (...) (24 years ago, 22-Dec-01, to lugnet.robotics)
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| | Help needed
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Does anyone can tell me from where I can download the file 'spirit.ocx'. Thanks! Yaron Dori (24 years ago, 23-Dec-01, to lugnet.robotics.rcx)
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| | vision command and xp
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i went out and bought vc to go along with my ris 2.0 and it tells me that it wont work under windows xp, do I have to go back to 98 or is there a work around, I cant seem to find help from the lego mindstorms web site. matt b (24 years ago, 23-Dec-01, to lugnet.robotics)
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| | Re: RIS2 Upgrade on W95 & Pentium(I)
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Does anyone know what the .cab file format is like? I mean, if the files are "password protected", does that mean they are encrypted? or does it just mean that some programs won't let you in? (...) (24 years ago, 23-Dec-01, to lugnet.robotics.rcx, lugnet.robotics)
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| | Re: Remote servo motor controller for RCX
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Very nice. Do you have a price for it yet? --Jack Gregory Nitin Patil <mindsensors@yahoo.com> wrote in message news:Gop900.KuK@lugnet.com... (...) and (...) (24 years ago, 23-Dec-01, to lugnet.robotics)
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| | Re: Mario's new book...
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Yup, I just bought it at B&N too,really nice! I love the discussion of grabbing mechanisms, and the skier is way too cool, I can't wait until we get snow! I am however not *quite* impatient enough to defrost our freezer... :o) Elijah (24 years ago, 22-Dec-01, to lugnet.robotics)
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| | Re: Source for a few IS1U60 sensors
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Robert, A company in Canada sells them at a reasonable price, HVW Technologies. My order got held up at the boarder for about a week, but they said that was a rare occasion and not the norm. Here is their web address (URL) They cost $3.25 each plus (...) (24 years ago, 22-Dec-01, to lugnet.robotics.handyboard)
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| | Fw: ...proximity sensor.....
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Hi All, I want to use the "Send message" function of the RCX 2.0 and the = Light Sensor to make an IR proximity sensor, say if the robot gets within = 6 inches of an object it would back up and spin 180 and carry on. I wan = to use the programming (...) (24 years ago, 22-Dec-01, to lugnet.robotics)
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| | Noisy sound sensor ;-?
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Hi I have built the sound sensor in the Extreme Mindstorms book, and the basic operation appears to work fine. However when I have tried to use it in a full program which starts motors at the start of the program, the input is behaving as if it has (...) (24 years ago, 22-Dec-01, to lugnet.robotics)
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| | Re: Bouncing
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Is this what you suppose to post? ----- Original Message ----- From: Timothy Burt To: Lego Robotics Sent: Saturday, December 22, 2001 2:02 PM Subject: Bouncing Sirs, I have had trouble posting but not receiving messages. I think I have the problem (...) (24 years ago, 22-Dec-01, to lugnet.robotics)
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| | Re: Shuting up the RCX
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(...) :-( Too heavy for me. Thanks anyway (24 years ago, 22-Dec-01, to lugnet.robotics.rcx)
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| | Re: Shuting up the RCX
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(...) very easy to (...) Ok, perhaps I'll give it a try on Xmas. Thanks a lot (24 years ago, 22-Dec-01, to lugnet.robotics.rcx)
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| | How to make shared memory....not
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(...) You ask for it, you get it. BUT: It works, sort of. It will not survive any multitasking problems. Shared memory has to be handled by the OS, not by a user program. I split your problem to 3 programs. Program 1 allocates the memory and prints (...) (24 years ago, 22-Dec-01, to lugnet.robotics.rcx.legos)
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| | Bouncing
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Sirs, I have had trouble posting but not receiving messages. I think I have the problem solved. If not, please let me know what I need to do to resolve this issue. I find the posting informative. Thank you, Tim Burt (24 years ago, 22-Dec-01, to lugnet.robotics)
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| | Re: New MindStorms SDK
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(...) That's fantastic news! Thanks Michael & Team.. Except of course if you happen to be a MacOS developer and super keen to develop some exceptional tools for the RCX on MacOS 9.x/X as a platform.. Can you please provide the toolkit as a .SIT or (...) (24 years ago, 21-Dec-01, to lugnet.robotics)
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| | Re: RIS2 Upgrade on W95 & Pentium(I)
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(...) Well, I have a fully functional RIS 1.5 including the serial tower. I got the RIS2 "Upgrade" disk from S@H. It's installer checks for OS and bails when it finds W95. And, of course, the .cab files are password protected, so, none of this (...) (24 years ago, 21-Dec-01, to lugnet.robotics.rcx, lugnet.robotics)
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| | Re: Using the Home-made One-way valve
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(...) Great ideas there! The Window Walker is a really nice practical application of the one-way split-valve. So that's how the old pre-1989 pneumatic systems operated...:-) -Gaurav Thakur, raving madman cp5670@home.com (URL) (24 years ago, 21-Dec-01, to lugnet.robotics)
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| | I need to borrow a USB Tower.
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I don't post to these groups very often, being mostly a lurker, but I am attempting to make a contribution to the world of lego robotics. I am working on what will be an open source version of the spirit.ocx. In fact it's been available as an alpha (...) (24 years ago, 21-Dec-01, to lugnet.robotics.rcx)
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| | Re: USB, Windows, legOS
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I tried the patch and still get the error "Error 6 GetCommState". Anyone know what this error means and what I can do to correct it? I would really like to get legOS running. (...) (24 years ago, 21-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: Storing Data
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(...) It was suggested by some of my 'c++' co-workers that this was the case (shared memory was available). However, I don't deal with that in my Visual Basic world. They also suggested there were 'unused' memory blocks in LegOS where data could be (...) (24 years ago, 21-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: Scout SDK missing from mindstorms.lego.com?
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Hi Chris, I seem to be hosting the only copy in existance :) Try here: (URL) down to the downloads!) Phil. (...) (24 years ago, 16-Dec-01, to lugnet.robotics.scout, lugnet.robotics)
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| | Re: Storing Data
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(...) As there is no memory management, any memory not on the stack is by definition shared between any threads. Concurrency control is up to you however. John A. Tamplin jat@jaet.org 770/436-5387 HOME 4116 Manson Ave 770/431-9459 FAX Smyrna, GA (...) (24 years ago, 21-Dec-01, to lugnet.robotics.rcx.legos)
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| | Remote servo motor controller for RCX
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Mindsensors has developed a two servo motor control for the RCX. This interface works on IR message Sent from RCX. It can control tow servo motors with 1 degree resolution, and can move from 0 to 180 degrees. You can have look at it (URL) this page (...) (24 years ago, 21-Dec-01, to lugnet.robotics)
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| | Re: Using the Home-made One-way valve
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(...) Agreed! (24 years ago, 21-Dec-01, to lugnet.robotics)
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| | New MindStorms SDK
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Dear LUGnetters and LEGO MINDSTORMS users You can download our new LEGO MINDSTORMS SDK from: (URL) non-standard location is because we were delayed in getting it up and running on the official mindstorms.lego.com pages before X-mas. However, we felt (...) (24 years ago, 21-Dec-01, to lugnet.robotics)
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| | Re: Storing Data
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(...) What you request is shared memory and shared memory is not a part of legOS. My way to simulate shared mem is to put the two (or more) tasks into one legOS program. Each task is started as a thread by an execi() call, triggered by the user via (...) (24 years ago, 21-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: Using the Home-made One-way valve
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(...) (URL) interesting robot - and it works! BEN (24 years ago, 21-Dec-01, to lugnet.robotics)
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| | Using the Home-made One-way valve
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Wow, I didn't realise that Christophe's home-made one-way valve would lead us into such deep discussion into vacuum storage and the like... On a more practical plane, here are some uses for the one-way valve (URL) they don't require you to have a (...) (24 years ago, 21-Dec-01, to lugnet.robotics, lugnet.technic)
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| | Re: Home-made One-way valve
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|
If the surrounding environment is the same as what should be in the tank if not for the vacuum - since all are partial anyway - the the vacuum doesn't increase. The matter has to be the same. Andy ----- Original Message ----- From: "Steve Baker" (...) (24 years ago, 21-Dec-01, to lugnet.robotics)
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| | Re: RIS2 Upgrade on W95 & Pentium(I)
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(...) Yes - that'll be the problem. Win95 definitely doesn't support USB. There was a patch put out by M$ to add USB to Win95 but it didn't work well. ---...--- Steve Baker ---...--- Mail : <sjbaker1@airmail.net> WorkMail: <sjbaker@link.com> URLs : (...) (24 years ago, 21-Dec-01, to lugnet.robotics)
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| | announcing the Handy Cricket!
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(a little late for X-mas, but maybe in time for New Year's...) As many of you know, when I was at MIT one of the last things I worked on (from 1996 to 2000, actually) was a tiny robotics controller called the Cricket. In May, 2001, I obtained rights (...) (24 years ago, 20-Dec-01, to lugnet.robotics.handyboard)
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| | RE: RIS2 Upgrade on W95 & Pentium(I)
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Well the concern there is that RIS2.0 uses a USB IR tower - which is not natively supported by W95. If you can get USB working, then you might be alright... HTH, James. (...) (24 years ago, 20-Dec-01, to lugnet.robotics.rcx, lugnet.robotics)
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| | Re: Home-made One-way valve
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(...) So you are happy to say that you can increase the amount of vacuum in a sealed tank by placing it at the bottom of a bucket of water? Mmm'K. ---...--- Steve Baker ---...--- Mail : <sjbaker1@airmail.net> WorkMail: <sjbaker@link.com> URLs : (8 (...) (24 years ago, 20-Dec-01, to lugnet.robotics)
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| | RIS2 Upgrade on W95 & Pentium(I)
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Has anyone succeeded in getting the upgrade to work on less-than-minimum-requirement PCs? In their infinite wisdom, LEGO has "upgraded" the minimum platform for the RIS. I'd like to be able to run it on my existing machine. Moving up to W98 is (...) (24 years ago, 20-Dec-01, to lugnet.robotics.rcx, lugnet.robotics)
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| | Re: Home-made One-way valve
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(...) If you had a 1 atmosphere vacuum in a blue LEGO tank and you took it to the bottom of the Mariana Trench you would have about 13,000 atmospheres of vacuum in it. And if you took it out into space you would have *no* atmospheres in it. All this (...) (24 years ago, 20-Dec-01, to lugnet.robotics)
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| | LNP: host address
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Is there a reason to "hardcode" the host address using a define (LNP_HOSTADDR)? Things would be easier for me if I could change the address at run time (when calling lnp_init). Is it safe to replace the defines by a variable? Eric (24 years ago, 21-Dec-01, to lugnet.robotics.rcx.legos)
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| | Robot Controller 1.3b1
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I've posted a new version of Robot Controller ---the ideal companion to NQC for Mac OS X users. This version adds several new features: it can synchronise the RCX watch with your computer's clock, it has a new pane which lets you read and change the (...) (24 years ago, 20-Dec-01, to lugnet.robotics.rcx.nqc)
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| | Re: Mario's new book...
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I just got my copy of this book from Amazon yesterday. In terms of explaining the elements of mechanical design of Lego robot building (which is what the author intended to focus on), it is an excellent book! I hardly slept last night because I (...) (24 years ago, 20-Dec-01, to lugnet.robotics)
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| | Source for a few IS1U60 sensors
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I'm looking for two of the IS1U60 sensors for the Handyboard. Anyone know where I can purchase them? The only place I could find that carried them would only sell them in lots of 1000 pieces. If you know where I can get a couple please let me know. (...) (24 years ago, 20-Dec-01, to lugnet.robotics.handyboard)
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| | Proximity
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Next question: Does any one have a proximity routne (code) I can review (steal) using LegOS, a light sensor, and the IR port? I've used the NQC stuff, but now I've moved up to LegOS. I haven't been able to find the right commands for the IR port. (...) (24 years ago, 20-Dec-01, to lugnet.robotics.rcx.legos)
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| | Storing Data
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When using LegOS (a most excellent creation, btw) is it possible to store a value and use it in different programs? Actually, I'm sure it is, but how would someone do it? I want to have one program to configure my light sensor, and use those values (...) (24 years ago, 20-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: Home-made One-way valve
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(...) a (...) tanks (...) own (...) So, define vacuum as an area of lower pressure than the surrounding environment. I think that satisfies most if not all of your requirements, and is what most people seem to think of when they mention vacuum. Andy (24 years ago, 20-Dec-01, to lugnet.robotics)
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| | Re: Home-made One-way valve
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In lugnet.robotics, sjbaker1@airmail.net writes: [snipped rant about light-bulbs] (...) Well, since a perfect vacuum has never (AFAIK) been shown to exist anyware (even in space), I guess you're right. However a partial vacuum is easy to "store" and (...) (24 years ago, 20-Dec-01, to lugnet.robotics)
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| | Re: Home-made One-way valve
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(...) Argh! <rant> It's been a long time since domestic lightbulbs were even partially evacuated - these days they are filled with some kind of relatively inert gas. Back in the 1940's and 50's they were partially evacuated - and on some old movies (...) (24 years ago, 20-Dec-01, to lugnet.robotics)
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| | Re: Home-made One-way valve
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c s soh <cssoh@singnet.com.sg> wrote in message news:3C213F4F.CC899E....com.sg... (...) and (...) How about a vacuum flask (thermos), domestic lightbulb, or even CRT (cathode ray tube such) as in your TV or monitor. These all rely on a stored (...) (24 years ago, 20-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| | Re: Home-made One-way valve
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(...) I think the reason for that is simply that you can't store very much "vacuum" in a tank. While you can pressurize a tank to several hundred PSI or better, for vacuum you're limited to completely (well, OK, nearly completely) evacuating it--a (...) (24 years ago, 20-Dec-01, to lugnet.robotics)
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| | Re: Home-made One-way valve
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(...) Somehow I'm a bit queasy about this business of "storing vacuum" in a tank. So I checked with the local supplier of industrial gases. If you need a tank of compressed air, that's no problem. But a tankful of vacuum, er that's not listed in the (...) (24 years ago, 20-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| | Re: Contests?
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I'm working on a new web site which I hope to launch over the holidays, but I've got a couple of January events listed on the calendar already. It's basically non-functional now, so if you know of an event, drop me an email or post it here and I'll (...) (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Contests?
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Hi. Are there any robot contests other than the Trinity College Fire Fighting Robot Constest being held in 2002? Best Wishes Barbara Nostrand (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Re: Proximity sensors.
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see (URL) capteur section ----- Original Message ----- From: "Ismael Salvador" <issalig@doctor.upv.es> To: <lego-robotics@crynwr.com> Sent: Wednesday, December 19, 2001 6:26 PM Subject: Proximity sensors. (...) building (...) cheap (...) (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Re: Chemical Sensors
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You can interface pH and other sensors with Mindstorms using logIT, look at (URL) ColePalmer (mentioned below) it is not clear to me what they offer in terms of Mindstorms compatible sensors? - Thomas Hoeg-Jensen (...) (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Re: Chemical Sensors
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(...) J. David Malinsky University of Calgary Department of Chemistry Phone (403) 220-5371 Fax (403) 289-9488 mailto:malinsky@ucalgary.ca (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Chemical Sensors
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Does anyone know of sources for chemical sensors. Things that can report ph, oxidation, etc? Robb, or bid at (URL) (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Re: Proximity sensors.
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(...) building (...) For cheapness the following probably can't be beat: (URL) ($free) otherwise you can buy IR proximity sensors based on reflected IR: (URL) ($40) (URL) ($34) (URL) ($14) or a sonar range sensor: (URL) ($80) or a brick that (...) (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Re: Proximity sensors.
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I have done a few proximity sensors using the light sensor and the RCX's messaging. Examples are here: (...) (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Proximity sensors.
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Hi all. I want play with my RCX this Christmas so I have thought about building a proximity sensor. So guys, do you have any ideas?. I prefer simple and cheap solutions. Bye. (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Re: Serial Port (IR Tower) communication procedures with LegOs
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If you mean standard firmware message, I think you should use my remote control patch for legOS025, you can find them at (URL) luck! Zhengrong (...) (24 years ago, 19-Dec-01, to lugnet.robotics, lugnet.robotics.rcx.legos)
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| | Re: Mario's new book...
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(Posted this to .books too, but I don't know if anyone bothers looking there any more ...) This book is available (in stock!) from Computer Manuals at (URL) . £19.95, free UK p&p until 24th December, and if you review any books they're giving away a (...) (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Serial Port (IR Tower) communication procedures with LegOs
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Hi, We need to send and receive messages between a PC and a RCX with legOs, but we can't find the serial communication procedures in the code or libraries. Does anybody can help us??? Thanks in advance, Mauro + Prof. Dr. Mauro Roisenberg Dept. de (...) (24 years ago, 19-Dec-01, to lugnet.robotics)
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| | Re: Shuting up the RCX
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It is easier to use legOS to instead NQC, and it is more power, very easy to be used. Zhengrong (...) (24 years ago, 19-Dec-01, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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