 | | Re: Cheshire LEGOFest pictures
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On Tue, 6 Mar 2001 12:40:40 GMT, Jennifer Clark <jen@vulture.dmem.strath.ac.uk> wrote: What frequency is he using? Matthias Jetleb VA3-MWJ (24 years ago, 7-Mar-01, to lugnet.loc.uk, lugnet.technic, lugnet.robotics)
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| | Re: Cheshire LEGOFest pictures
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WHERE CAN I CONTACT JOHN for the radio control ?? Mac ----- Original Message ----- From: Ross Crawford <rcrawford@csi.com> To: <lego-robotics@crynwr.com> Sent: Wednesday, March 07, 2001 4:23 AM Subject: Re: Cheshire LEGOFest pictures (...) makes (...) (24 years ago, 7-Mar-01, to lugnet.robotics)
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| | Re: Cheshire LEGOFest pictures
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oooooooohhhhhhh... I'll take one too!!! Gary Michael Edwards <medwards@ukonline.co.uk> wrote in message news:G9s1sv.56H@lugnet.com... (...) involved (...) makes a (...) but (...) need (...) black 9V (...) of the (...) controlled (...) two (...) (...) (24 years ago, 7-Mar-01, to lugnet.loc.uk, lugnet.technic, lugnet.robotics)
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| | Re: Cheshire LEGOFest pictures
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(...) It gets better - in my haste yesterday I forgot to mention one of the most important features of the transmitter unit; it has an RS232 port to allow connection to your computer, which can then control the motors over the air interface. (...) (24 years ago, 7-Mar-01, to lugnet.loc.uk, lugnet.technic, lugnet.robotics)
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| | Re: Cheshire LEGOFest pictures
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(...) Now if it had a reverse path to send sensor data back to the computer, you'd *really* have something. Without some way to read back sensors though, the ability to control motors using the computer is a LOT less useful than you might think. (24 years ago, 7-Mar-01, to lugnet.robotics)
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| | Re: Cheshire LEGOFest pictures
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(...) Tell me about it! I've had to program real systems (as opposed to real lego systems :-) with no feedback at various points in the past, and it can indeed be horrific. However, I believe John may have something up his sleeve with regard to (...) (24 years ago, 7-Mar-01, to lugnet.robotics)
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| | Re: Cheshire LEGOFest pictures
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(...) True, but this one can have a computer of any sort on the outside, as it were. Depending on your application either one could be more useful - personally, being a distributed type of person who builds smallish scale models with a large (...) (24 years ago, 7-Mar-01, to lugnet.robotics)
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| | Re: Cheshire LEGOFest pictures
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(...) His email address when posting to this group is: barnes@sensors.com Jennifer Clark (24 years ago, 7-Mar-01, to lugnet.robotics)
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| | Re: Cheshire LEGOFest pictures
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(...) be (...) exactly (...) Oh man... have another brick transmitting the input of 8 sensors back to the computer and you've definitely beat the RCX to a pulp!! - David (24 years ago, 7-Mar-01, to lugnet.robotics)
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| | killer mindsorms robots
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anybody have or have read the book Killer Mindstorm Robots by Gordon McComb, just came out this year. ISBN: 0071370404 Storm the LEGO castle with this complete guide to designing, building, and programming "combots" (combat robots) using the LEGO (...) (24 years ago, 7-Mar-01, to lugnet.robotics)
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| | Re: 3 Robot Project - ALL DONE ALMOST
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I designed a caster wheel assembly that worked pretty well. It uses a single, centered wheel instead of the two wheels you have. The two wheel assembly you are using tends to not want to turn. Anyway go to the following web site for assembly (...) (24 years ago, 7-Mar-01, to lugnet.robotics)
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| | Re: 3 Robot Project - ALL DONE ALMOST
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Here's three ideas ranging from easy to implement, but not terribly effective, to fairly effective, but harder to employ. You could try to characterize the amount of rotation that occurs in the robot as the caster wheel straightens out when you (...) (24 years ago, 7-Mar-01, to lugnet.robotics)
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| | Re: Cheshire LEGOFest pictures
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(...) Hot diggety!! (Starts drooling) when can I get one????!!!!???? How about this? Using old blue or grey rails (non-conducting), you could have a transmitter & 8 receivers (assuming of course that the receivers'll be available separately?), one (...) (24 years ago, 7-Mar-01, to lugnet.loc.uk, lugnet.technic, lugnet.trains, lugnet.robotics)
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| | What is an RCX 2.0?
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Hi folks, Apologies if this has been asked before, but I'm a little stumped. I just received a RIS 1.5 set, and inside was a yellow brick labelled RCX 2.0. I'm reasonably familiar with the RCX 1.0, and I have a 1.0 with a power jack. This one has no (...) (24 years ago, 8-Mar-01, to lugnet.robotics)
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| | Re: What is an RCX 2.0?
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(...) That's interesting. (...) Neither does the RCX 1.5 (...) Yes - I think so. We aren't aware of any hardware differences between 1.5 and 2.0 and the only difference between 1.0 and 1.5 is the external power socket. (...) Exactly...and you can (...) (24 years ago, 8-Mar-01, to lugnet.robotics)
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| | Re: What is an RCX 2.0?
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I have heard that RCX 2.0 has more memory in it than RCX 1.0 . Could you use tools like RcxCC to check the amount of memory in your RCX 2.0? Cheers, Hao-yang Wang (24 years ago, 8-Mar-01, to lugnet.robotics)
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| | Re: 3 Robot Project - ALL DONE ALMOST
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A spherical roller is just a ball in a loose fiting socket like on the underside of a mechanical mouse. (Computer pointing device, not a robo-rodent !) Some people actually use the tops of roll on anti-perspirant bottles for casters on small (...) (24 years ago, 9-Mar-01, to lugnet.robotics)
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| | Re: 3 Robot Project - ALL DONE ALMOST
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Looks good : ) Nice and compact ! Thanks for sharing this. "Gustav Jansson" <GJansson@aol.com> wrote in message news:G9uM19.C84@lugnet.com... (...) (24 years ago, 9-Mar-01, to lugnet.robotics)
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| | Macromedia Director active X control for the rcx
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Hi group has any one used the active x control with macromedia director 7 or later? it has the opetion to control the rcx. can any one send me a small program to run just one motor , then i can get an idea of how it works .. Mac (24 years ago, 9-Mar-01, to lugnet.robotics)
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| | Re: Solenoid Pnuematic Valve
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(...) Was it these valves ? (URL) not, they seem intersting, but I have no information about cost, availibility, efficency with RCX. I just found that in a magazine. Marc Klein A Mindstorms fan. (24 years ago, 9-Mar-01, to lugnet.robotics)
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| | Need Decision Help - Buy RIS 1.5 now or 2.0 later
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I need to make a decision about purchasing Mindstorms kits for my sons school. We have decided to buy 5 or 6 RIS kits. The question is, should we buy 1.5 kits that I can get a hold of now or should we wait until fall to get the 2.0 kits? So far, I (...) (24 years ago, 9-Mar-01, to lugnet.robotics)
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| | Re: Need Decision Help - Buy RIS 1.5 now or 2.0 later
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I'm sorry to say that I don't have anny suggestions, just some more info to consider. I imagine that the difference between RIS1.5 and RIS2.0 will be the software. This was the major difference between RIS1.0 and RIS1.5; RIS1.5 was easier to use and (...) (24 years ago, 9-Mar-01, to lugnet.robotics)
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| | Sv: killer mindstorms robots
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I did not know of this book, it looks interesting. BTW, searching on Barnes&Noble showed 11 Mindstorms books! I believe only a few have been discussed on this list. Oddly, some of them are from the early 80's and not about Lego at all. Thomas (...) (24 years ago, 9-Mar-01, to lugnet.robotics)
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| | Re: Solenoid Pnuematic Valve
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I'm no sure if those are the ones, but a long time ago somebody tried these: (URL) not sure of the results, but would be interested to find out about either of them. Martin ----- Original Message ----- From: "Marc Klein" <marc.klein@free.fr> To: (...) (24 years ago, 9-Mar-01, to lugnet.robotics)
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| | Re: Need Decision Help - Buy RIS 1.5 now or 2.0 later
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(...) for (...) the (...) Maybe, maybe not. Last time I checked lugnet's list of LEGO retailers, there is a place on the web selling 1.5 sets for ~$150.00, and they had them in stock! Alan C Pflugerville, Texas there is also EBay but in limited (...) (24 years ago, 9-Mar-01, to lugnet.robotics)
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| | Re: What is an RCX 2.0?
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(...) So you got the same late shipment from Future Shop too? I was hopping that we may get a RIS 2.0, but a RIS 1.5 is still great for the 50% off price. I also have no idea if the RCX 2.0 has any physical difference compare to a RCX 1.5. (24 years ago, 10-Mar-01, to lugnet.robotics)
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| | Re: What is an RCX 2.0?
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See also Martin Eriksson's post at (URL). Hao-yang Wang (24 years ago, 10-Mar-01, to lugnet.robotics)
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| | Re: Need Decision Help - Buy RIS 1.5 now or 2.0 later
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(...) There used to be a scan of the 2.0 contents page on Jin Satos site, but currently I can't get it from here. AFAIR the differences were not spectacular, some fiber optic piece that fit on the light sensor is added, there still are no steering (...) (24 years ago, 10-Mar-01, to lugnet.robotics)
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| | Re: DDK - What use are they / lower prices seen
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With the news of steep discounts on the Droid developer kit, I located fours sets at a CompUSA in Austin, and bought them all at $29.99 each. Will probably give two away as gifts and use the other two this week, which happens to be spring break for (...) (24 years ago, 10-Mar-01, to lugnet.robotics)
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| | RE: Solenoid Pnuematic Valve
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That's the one. I used the low pressure version to get the 1/2 watt rating I.E. 5VDC @ 100mA. It works, but it has a few drawbacks....It's a traditional 3 way valve (Com, NO, NC) so it doesn't vent the same way the Lego valves do, you'd need two to (...) (24 years ago, 10-Mar-01, to lugnet.robotics)
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| | Re: Need Decision Help - Buy RIS 1.5 now or 2.0 later
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Thanks to everyone who responded, both by posting and email. I had a great time looking at Jin Sato's site as well as other Japanese Mindstorms sites, thanks Juergen. Isn't it odd that the Japanese version of RIS 2.0 shipped back in November but (...) (24 years ago, 10-Mar-01, to lugnet.robotics)
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| | Re: What is an RCX 2.0?
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(...) With 1.5 firmware Diag: Version 03.01/03.09 Memory Map: Datalog Start Pointer: 20867 Datalog Current Pointer: 20870 Total Memory Used: 20870 Top of Memory: 26297 Free Memory Left: 5427 I just got it for one day so I do not know what they (...) (24 years ago, 11-Mar-01, to lugnet.robotics)
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| | Re: What AC adapter to use for RIS 1.0?
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(...) A final word on this subject. I've posted two replies already but have missed the obvious until today. Unfortunately, it's so obvious that it's embarrassing. I made a comment that I was surprised that there were no instructions in the manual (...) (24 years ago, 11-Mar-01, to lugnet.robotics)
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| | Re: Need Decision Help - Buy RIS 1.5 now or 2.0 later
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(...) Strictly speaking, there is a difference, physically, between the 1.0 and the 1.5 or 2.0 RCX (I have a 1.0 and a 2.0). The 1.0 has an external power jack. This doesn't effect the physical characteristics of the RCX as far as where and how you (...) (24 years ago, 11-Mar-01, to lugnet.robotics)
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| | Re: Need Decision Help - Buy RIS 1.5 now or 2.0 later
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(...) Actually, I wouldn't read too much into that. I just received my RIS 1.5 on Friday and it contained and RCX 2.0, but the photos in the manuals and on the box show at least 15 different RCX 1.0's (including 3 with 5 digit serial numbers). I (...) (24 years ago, 11-Mar-01, to lugnet.robotics)
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| | Gear Down Robot`
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Has anyone created a geared down robot with a gear ratio of 8:40 x 8:40? My original creation is not 'good enough' to go in a straight line and after all the repsonds to my original message I still can not build one. I suck at the building part of (...) (24 years ago, 11-Mar-01, to lugnet.robotics)
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| | Re: What AC adapter to use for RIS 1.0?
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Hello everyone, I've just signed up to this mailing list and it looks like there's a lot of cool information being passed around here. Anyway, I have an RCX 1.0 with the power jack. Some time ago, I noticed the markings in the plastic above the (...) (24 years ago, 11-Mar-01, to lugnet.robotics)
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| | Re: Gear Down Robot`
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(...) I have an MLCad .dat (substructure) file I can send you, or anybody, if wanted. NOt sure of the ratio, though. Might give you ideas though. Send your email address to my email address at ElectroDFW <at> cs <dot> com, with subject: Geartrain. (...) (24 years ago, 12-Mar-01, to lugnet.robotics)
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| | Re: Gear Down Robot`
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(...) Ok, so it's not 8:40 ratiom but you can easily compensate for that. Pictures are at: (URL) also working on a motor control library that combines speed measurement, distance measurement, stall detection and proprotional feedback for control. (...) (24 years ago, 12-Mar-01, to lugnet.robotics)
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| | Lego R/C etc
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I'm sorry for the delay in being able to post on this subject. I've been out of town for a couple of weeks, and will be away for a few days this week as well. It's the busy season for me! Here is the current state of the game; I have built a few (...) (24 years ago, 12-Mar-01, to lugnet.robotics)
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