 | | RE: Wot no RCX power connector?
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I was thinking of using only one at the end (attached to the + where it goes onto the PCB), and running a lead to clip onto the first (attached to the - ). The 4 middle ones can be ignored. Jeff jeffrey.hazen@northmill.net -----Original Message----- (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | RE: Wot no RCX power connector?
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(...) Ummmm, you could buy 2, put one on either end of the battery compartment ann run a wire between them, right? Cheers, Ralph Hempel - P.Eng ---...--- Check out pbFORTH for LEGO Mindstorms at: (URL) ---...--- Reply to: rhempel at bmts dot com (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Vector 2X problem
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Hi, finally my Vector2X works! Just because of the wrong selection of transistor. Guide comes from Tom Brusehaver (1997). Thanks! Any way, the result seems not consistense as the heading 'hang' when I turn off the HB and on again later. Instead of (...) (26 years ago, 21-Oct-99, to lugnet.robotics.handyboard)
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| | Pneumatics and the RCX -how?
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I know that some of you use pneumatics for yuor robots. How do you do that? I suppose you use a compressor and a motor to change the valve, but that requires two motors and 2 is all that come with the MindStorms. Yes, I can buy more, but I´d like to (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Pneumatics and the RCX -how?
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I have been searching for the answer to this one for a while. My intent is to find a supplier who has small electrically operated (solenoid) valves which can be driven by the RCX output(s). I have found one so far, but the valves are very pricy. But (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Palm Pilot
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I've received a few emails about my Palm Pilot program to control the RCX, so I put up a quick web page about it here: (URL) Kory (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | NELUG at Mindfest update (Good News on our Table Space!!)
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I just got some good news from Fred Martin. We now have 2 tables! We should not have to worry about not having enough space now. Whew... Plus Fred tells me we have a highly visible spot that should attract attention. Also Set-up starts at 3pm (...) (26 years ago, 21-Oct-99, to lugnet.org.us, lugnet.robotics, lugnet.robotics.events, lugnet.loc.us.ma, lugnet.loc.us.ma.bos, lugnet.loc.us.ct, lugnet.loc.us.vt, lugnet.loc.us.nh, lugnet.loc.us.vt, lugnet.loc.us.ri)
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| | Re: Palm Pilot
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(...) You must change the picture names so they do not include the space: (URL) end.jpg Or instead you can change the link name like this: (URL) Martins [ mailto:lau@mail.telepac.pt ] [ (URL) ] Neither technology nor efficiency can acquire more time (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Wot no RCX power connector?
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(...) I guess TLG still tries to aim their product at children => Childres build cars => Cars cannot be plugged in and drive at the same time => Remove connector because it is not needed => lower production cost. Or maybe the arrows should be turned (...) (26 years ago, 20-Oct-99, to lugnet.robotics)
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| | Re: GLOBAL POSITIONING SYSTEM
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(...) Yes, I have done it, perhaps others. I use mine nearly every day connected to a GPS, but it has nothing to do with robotics. You're a bit off on your accuracy though, the spec actually says you'll be within 100 meters 95% of the time. I think (...) (26 years ago, 21-Oct-99, to lugnet.robotics.handyboard)
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| | HC11 pink book
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Hi, I've seen this referenced, and grabbed the link that someone provided the other day. I've had a look at all the different manuals listed, but I can' work out which is the right one to grab. My handyboard has the 68HC11A1FN part number. Can (...) (26 years ago, 21-Oct-99, to lugnet.robotics.handyboard)
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| | FW: O'Reilly book
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I was pleased to have my back-ordered copy of Jonathan Knudsens O'Reilly Mindstorms book waiting for me when I got home last night. Personally I am good with programming totally lame when it comes to understanding or visualising how mechanical (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Scout brick and IR
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I have been doing experiments with the Scout brick from the LEGO Robotics Discovery set and have come across a few things that have me scratching my head. Please excuse the length of this post. The Scout can understand two types of messages via it's (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Books
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*If* I could only buy one MindStorms book, which is better, Dave Baum's or Jonathan Knudsen's? Does anyone have both and can compare them? --The WordMeister Doug Wilcox WordSmith Digital Document Services 403 VFW Drive Rockland, MA 02370 (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Wot no RCX power connector?
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(...) Only if the RCX was "on" at the time. If the RCX is "off" then power usage is reduced to a trickle, supplying power only to maintain the data in RAM, and in this state the RCX can survive for upwards of a minute or more, even with no batteries (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Books
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(...) I think the point here is that they're different. You should choose the one that best suits your purposes. I'll be getting both of them. :) - Ben. ---...--- Ben Williamson benw@pobox.com (URL) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Books
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Can either book be found at major physical bookstores yet? (I know that they are at amazon.com) (...) Joel Shafer joel@connect.net (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Upcoming _Star Wars_ Mindstorms and Technics Releases
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Actually, now that stuff is leaking out, its starting to look scarily accurate. Now, where is that Jar Jar minifig, Iza hungry! But it doesn't say anything about the Flash speeder in there so, Im going to wait a little longer on eating that fig. (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | RE: Scout brick and IR
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(...) Best guess - to appeal to different segments of the market - the scout looks 'easy' to use for people with no computer or programming experience - but they still keep a door open for those of us that have computers and are crazy about (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | books
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I was just made aware of Daves' book by Gary Cornell, who pointed me to (URL) looks great to me - I've got it backordered. Sincerely, Michael Jones Peripheral Test Instruments, LLC. The Worlds Finest SCSI and FCAL Diagnostic Tools www.scsitools.com (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Books
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My book was released less than a week ago. Copies are probably just getting to physical bookstores as we speak. I just got a stack (direct from O'Reilly) today. I think Ben's right: buy 'em both. But of course I'm biased. And hey, thanks to whoever (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Pneumatics and the RCX -how?
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I'd love to get a hold of some small RCX controllable valves also. I just finnished building a six legged pneumatic walker that would benefit from these for different walking motions. Presently, it just walks forward with the tripod gate type (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: HC11 pink book
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Adam: The pink book part number from Motorola is: M68HC11RM/AD this is the general reference manual for the whole family of microcontrollers, there is also a technical data manual with P/N: MC68HC11A8/D this one just covers the A series processors. (...) (26 years ago, 21-Oct-99, to lugnet.robotics.handyboard)
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| | RE: Scout brick and IR
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I have one of each, but the RCX is far more interesting. I think the RDS would be fun for younger kids (it says 9+ on the box), but once you got the hang of it, you would quickly want the programming power of the RCX. My scout is still configured in (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Scout brick and IR
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Oh, I agree wholeheartedly. I believe the RDS Scout fills a nitch in the market that was lacking. When the RIS first came out, I was working at an educational toy store that sold it. Most kids that got one loved it but quite a few RISs did get (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Need Balls!
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(...) Finding your own balls isn't really as difficult as it sounds -- you just have to know where to look. Most Toys backward R Us stores have a large Nerf selection with a variety of sizes and shapes. They're usually larger than the balls that (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | RE: Scout brick and IR
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Is there an IR port on the RDS? With that big old LCD, it would be sooooo much better than the RCX if you could actually do real programming on it. -Luis (...) ###...### Profanity is the one language that all programmers understand. -Anonymous (...) (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | Re: Need Balls!
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HI, I was just wondering what this FLL thing was that you guys were talking about? Thanks in advance. Nicolas Gauthier (26 years ago, 21-Oct-99, to lugnet.robotics)
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| | MIT Press now has copies of Jonathan's book
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The MIT Press Bookstore received an initial shipment today of 8 copies of Jonathan Knudsen's book, The Unofficial Guide to LEGO® MINDSTORMS™ Robots: (URL) Press is open until 8:30 pm tonight. There were 3 copies left at last count. If you happen to (...) (26 years ago, 21-Oct-99, to lugnet.robotics, lugnet.robotics.events, lugnet.books, lugnet.loc.us.ma.bos, lugnet.announce)
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| | What is FLL? (was: Re: Need Balls!)
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(...) It's a double acronym: FLL stands for "FIRST LEGO League" and FIRST stands for "For Inspiration and Recognition of Science and Technology." (2 URLs) if you're attending MindFest™ this coming weekend, FIRST's founder, Dean Kamen, will be part (...) (26 years ago, 21-Oct-99, to lugnet.robotics, lugnet.robotics.events)
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| | Re: Palm Pilot
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Thanks. It did work with Internet Explorer. It should be fixed now though. If anyone else has problems, please let me know. The website again is: (URL) (26 years ago, 22-Oct-99, to lugnet.robotics)
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| | Re: Need Balls!
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(...) Didn't the FLL organizers foresee the need for balls? Have you guys considered using ping pong balls instead? Very close in size to the original robo sport balls I would think. Uniform and easily obtainable. Somewhat heavier I think. <ICS> (26 years ago, 22-Oct-99, to lugnet.robotics)
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| | Re: Pneumatics and the RCX -how?
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(...) Excellent spider model Doug. <ICS> (26 years ago, 22-Oct-99, to lugnet.robotics)
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| | Re: NELUG at Mindfest update (Good News on our Table Space!!)
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Hello Eric... Expect to be VERY busy. I speak from experience. I just showed off my LEGO collection at Calgary's Woodworking & Hobby show on Canada's Thanksgiving weekend. Show attendance was 8 to 10,000, and I swear everyone stopped by to play with (...) (26 years ago, 22-Oct-99, to lugnet.robotics)
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| | Re: Need Balls!
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(...) You get 5 balls with the FLL extension set, but the contest uses up to 30 per team, and we are trying to simulate a contest. Of particular interest is whether the bins will get full and start overflowing. The balls are about 1.5 inches in (...) (26 years ago, 22-Oct-99, to lugnet.robotics)
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| | Re: NELUG at Mindfest update (Good News on our Table Space!!)
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If you can bring a FEW straights (say 6 or 8) that would be a good thing... I will try to be there as soon as I can, dunno about 3 but will try. Got a full plate tomorrow. (26 years ago, 21-Oct-99, to lugnet.org.us, lugnet.robotics, lugnet.robotics.events, lugnet.loc.us.ma, lugnet.loc.us.ma.bos, lugnet.loc.us.ct, lugnet.loc.us.vt, lugnet.loc.us.nh, lugnet.loc.us.vt, lugnet.loc.us.ri)
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| | Re: Books
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(...) My book isn't out yet, but its getting pretty close. From what I've seen, its clear that Jonathan and I took very different approaches to writing about Mindstorms. Jonathan covers a number of advanced topics (such as pbFORTH) that I don't (...) (26 years ago, 22-Oct-99, to lugnet.robotics)
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| | Analog port shaft encoder
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Hi, I am having great difficulty trying to get my shaft encoder to work using both sencdr3.icb or fencdr3.icb driver. I am using the QRB1114 optical sensor connected to analog port 3 with a current limiting resistor of 330 ohms for the emmiter and (...) (26 years ago, 22-Oct-99, to lugnet.robotics.handyboard)
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| | RE: Scout brick and IR
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Yes, it has an IR port, usable from the front and top. I don't know how you would get to it programmatically, with the current "OS" firmware being burned in to ROM, and not modifiable yet (at least by me...) Jeff jeffrey.hazen@northmill.net (...) (26 years ago, 22-Oct-99, to lugnet.robotics)
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| | Double echo
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Hi Ralph, I just tried out to remove all EMITs from ACCEPT word, in order to eliminate back echo from RCX. It works good: less Frame Errors and Break Interrupts from comm port during the session. And you can use "normal" terminal program, like (...) (26 years ago, 22-Oct-99, to lugnet.robotics.rcx.pbforth)
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