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 Robotics / *14921 (+40)
  RE: RDS Q:
 
The scout has some pre-programmed routines that are activated by receiving a message from the RCX or the IR tower. I listed them in a post to this group, I think the thread was something like "RCX VS the Scout". What I found was that the scout will (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  Re: RDS Q:
 
Found. Thanks. Carlo Jeffrey Hazen <jeffrey.hazen@northmill.net> wrote in message news:01BF1619.77F6CE...thmill1... (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  Re: Upcoming _Star Wars_ Mindstorms and Technics Releases
 
(...) Absolutely not. There is no way that this list is accurate. From what I hear, Lego is not doing any more Episode 1 sets at all. So you can cross off the AAT, MTT and the Two Kaadus right away. Also, multiple mindstorm sets? No possible way. To (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  Re: Upcoming _Star Wars_ Mindstorms and Technics Releases
 
(...) Well, there's the Mindstorms RIS + 2 expansions, + Cybermaster + Droid Developer Kit + Robotics Discovery Set. (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  RE: LEGO Reverse DNS?
 
(...) Ahhh. Last year...is this when you were starting to publish the internals - I think so. At that point I think they might have been casting around looking to see if anyone was actually hacking the RCX. Once they found out what was going on, (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  Re: Upcoming _Star Wars_ Mindstorms and Technics Releases
 
(...) Right, these are the two official expansions for Lego Mindstorms with the Mars Expedition on the way. That makes 3 total in 2 years. + Cybermaster This is a stand alone system, not Mindstorms. The rumored sets clearly say, "Mindstorm (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  Re: Upcoming _Star Wars_ Mindstorms and Technics Releases
 
Another day, a different rumor ... www.theForce.net has this poll up: "What vehicle would you most like to see be made into a Lego set? (Not Mindstorms or Technic, remember Falcon, Slave-I, Skiff, A-Wing, AAT, MTT, and B-Wing are coming)." Ah, the (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  Rotaion Sensor Sampling Speed?
 
Hi all, I'm putting together a mazebot for Mindfest, and ran into a bit of a funny with the rotation sensor. I THINK it has to do with the sample speed, but I'm not positive. I'm using pbFORTH and sampling the rotation sensor in a tight loop. The (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  RE: pbForth
 
(...) I think there are some C to FORTH translators at www.forth.org, but the problem is you need to configure them to run on your CPU and then to output FORTH compatible with your target. Not an easy task. Why not just learn FORTH? I learned about (...) (26 years ago, 14-Oct-99, to lugnet.robotics.rcx.pbforth)
 
  Re: Rotaion Sensor Sampling Speed?
 
Ralph, I don't know about the specific issues with pbForth, but this summer I was working on a large gear train (for a problem that we have recently "proven" is computationally intractable for the RCX) and dropped about 20 counts out of every 1,000 (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  RE: Rotaion Sensor Sampling Speed?
 
(...) Well, I'd need to vibrate things while looking at raw values, which is possible, I guess. I could run the gantry, smaple as long as possible and then store the value in an array... Something like: CREATE BUFFER 5000 CELLS ALLOT ( makes room (...) (26 years ago, 14-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
 
  RE: Rotaion Sensor Sampling Speed?
 
(...) I thought the problem was that it vibrated itself? (...) <snip forth code, which looks cool :)> (...) Take a look at the code that Markus sent out a while ago with the new firmdl he cooked up, particularly the code in keepalive.c and the code (...) (26 years ago, 14-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
 
  Re: HI
 
Alvin Yap <lego-robotics@crynwr.com> wrote in message news:19991013204452....ail.com... (...) I have a few pages of sensor information: (URL) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  Re: c++
 
(...) It depends... One solution is to let the motor float. Another and (I think) obvious solution is to gradually decrease the motor speed by calling SetMotorSpeed (or whatever you call that function) repeatedly with a decreasing speed value. Søren (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  Re: Upcoming _Star Wars_ Mindstorms and Technics Releases
 
(...) Sure. But the person who got the leaked info might not know that. Early rumors for the R2D2 set called it a Mindstorms R2D2. Same thing, yeah? I'm not saying the rumor is accurate, just that where it says "Mindstorms", it might be fair to read (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  NEW POWER SUPPLY
 
I NEED TO KNOW THE EXACT STEPS TO CONNECT A NEW MOTOR POWER SUPPLY TO THE HANDYBOARD WHILE IS HAS THE EXTENSION BOARD CONNECTED TO IT. IT'S TO MY UNDERSTANDING THAT THE EXTENSION BOARD SHARES THE SAME SLOT AS THE NEW MOTOR POWER SUPPLY, IS THE ANY (...) (26 years ago, 14-Oct-99, to lugnet.robotics.handyboard)
 
  Re: NEW POWER SUPPLY
 
This was explained a week or two ago here on the list server. Check back and you'll find out what traces to cut, etc. However, I have found another way that is very simple, and does not require you to make difficult-to-fix cuts on your boards. Just (...) (26 years ago, 14-Oct-99, to lugnet.robotics.handyboard)
 
  Re: NEW POWER SUPPLY
 
Great solution Gary! How about just pulling the L293D/SN754410 from the U11 socket, bending pin-8 out and soldering the REALLY BIG battery positive lead to it, then soldering the negative lead to pin-1 without bending it out, and then reinstalling (...) (26 years ago, 14-Oct-99, to lugnet.robotics.handyboard)
 
  Re: NEW POWER SUPPLY
 
That is the same thing, except much easier. Plus we save donut money. However, we'd have to look at the effect of 7 volts reverse bias on the motor LED's. Plus, we'd have to make real sure not to short the bent pin 8 to the socket underneath it. (...) (26 years ago, 14-Oct-99, to lugnet.robotics.handyboard)
 
  Re: !!! Laser attachments for Mindstorms !!!
 
(...) That sounds like what you would get if you gave two tin cans and a piece of string to the Defense Department and asked them to develop a field radio. - Robert Munafo (URL) LEGO: TC+++(8480) SW++ #+ S-- LS++ Hsp M+ A@ LM++ YB64m IC13 (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  Re: NEW POWER SUPPLY
 
What about this idea? Cut the motor trace as per on Fred's website....than desolder the motor power header (the one that plug into the Handy board) on the expansion board and flip the header upward and resolder it to the expansion board. Then reuse (...) (26 years ago, 14-Oct-99, to lugnet.robotics.handyboard)
 
  Re: RDS Q:
 
(...) Here is the message to which Jeffrey is referring: (URL) here is the actual information (imagine that!) 0...stop momentarily 1...spin 450d ccw, back to 0d, resume path 2...spin, resume at about 30d ccw of original path 3...crazy dance, resume (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  Re: NEW POWER SUPPLY
 
I think you win the prize for the best solution Giang! - Nick - (...) (26 years ago, 14-Oct-99, to lugnet.robotics.handyboard)
 
  Start_process problem
 
Hi When I try to start a process , the code downloads fine , it runs on the board with no errors but it only excutes the first proceess once and none of the others. void main() { start_process(fwrd()); start_process(checkir()); (...) (26 years ago, 15-Oct-99, to lugnet.robotics.handyboard)
 
  Re: Flex Cables (Does anyone have the 8485 CCII)
 
Thanks to Kevin the 8485 Control Center II scans are available and I can finally build the T-Rex. I assumed no-one would want to part with these cables, so I found a way to make my own length of flex cables with 0.065 string trimmer line, making the (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
 
  Re: You call it risk, I call it threat, Let's call the whole thing off Dept. (was: Re: [Rumour] FBI and Mindstorms)
 
(...) i wonder if these highly paid paranoids ever heard of ... encryption? like, just encrypt stuff whenever it leaves a computer? duh. nik ___...___ nikolaus heger nik@stagecast.com PGP fingerprint: 650.354.0735 970A 0D39 41BD A660 AACB 674B 747A (...) (26 years ago, 14-Oct-99, to lugnet.robotics)
 
  questions about legOS??
 
I got the latest version of legOS, and now I am lost. What else do I need to start programming? I know that the files I have aren't a program, but you download them to your RCX with your RCX program instead. Can anyone help me out? thanx (26 years ago, 15-Oct-99, to lugnet.robotics)
 
  Data acquisition through analog input
 
-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: base64 Content-Length: 297 2. Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: base64 Content-Length: 1408 (26 years ago, 15-Oct-99, to lugnet.robotics.handyboard)
 
  Re: questions about legOS??
 
Thoroughly read the HOWTO at arthurdent.dorm.duke...HOWTO.html and then come back :) More seriously, you still need a lot- a compiler and a working knowledge of C, to start with. Details on the compiler are in the HOWTO, but if you don't know C, (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
 
  RE: c++
 
That would not make the motion any smoother. Granted (yes it is obvious) that it would make the shuting down of the motors smoother it still does not have the desired effect. The solution I believe is somehow coding it so that as long as the button (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
 
  re: start_process problem
 
My suggestion is to double check that you double check the simple things withing the code (your code should be executing an infinite loop) while(1) { code .... } If the code is more complex and involves external assembly modules, check that they (...) (26 years ago, 15-Oct-99, to lugnet.robotics.handyboard)
 
  Re: Start_process problem
 
alex, each of your processes must be an indefinite loop. otherwise starting them up via start_process just runs through once. so, e.g.: void checkir() { while (1) { if (digital(4)) { /* go backward for some time */ /* turn a little */ /* go forward (...) (26 years ago, 15-Oct-99, to lugnet.robotics.handyboard)
 
  stuff
 
Hi everybody... I was wondering if anybody has investigated attaching more powerful motors to the RCX. Can anybody tell me (before I bother finding out myself) how to rig up a more powerful motor by getting the RCX output to control some sort of (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
 
  Mindstorms on Macs! MacDaily plans review(?)
 
Hi Folks, I was browsing Mac Gamers hoping to find info on the new mactell voodoo3 cards and instead discovered this... (URL) appears the next week ( Tuesday) they plan on covering Mindstorms on Macs troubleshooting. I thought someone here might (...) (26 years ago, 15-Oct-99, to lugnet.robotics.events)
 
  Powered Crossaxles Through a Large Technic Turntable
 
In tinkering with my new robot thingy, I've come up with a design someone might find useful. I realize that it may be a bit on the obvious side to many of you advanced LEGO roboticists; however, I've seen a few people requesting more basic (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
 
  RE: Powered Crossaxles Through a Large Technic Turntable
 
(...) (URL) is cool. I just wanted to mention that MLCad is a really decent program. I hope Michael will develop it further for the Mac, but then again, have a look at Dave baum's site for info on his graphics for his new book: (URL) One tip, you (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
 
  Re: Flex Cables (Does anyone have the 8485 CCII)
 
Can someone post a side by side comparison of Type I and II connectors?? I have the 5118, 8485, 8412, 8437, and they all have the same connector ends. I'm trying to figure out the difference. Phil: I'll try to get you the mm dimensions for the (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
 
  Re: Help me plan for Mindfest.
 
Welcome to Boston!!! (...) The easiest (and cheapest) way in my opinion is to take the Subway (We call it the "T" ). It is very safe and easy to use as long as you don't have a problem or fear of Subway's (Some, like my father do so I just thought (...) (26 years ago, 15-Oct-99, to lugnet.loc.us.ma.bos, lugnet.robotics, lugnet.robotics.events, lugnet.org.us)
 
  Re: Flex Cables (Does anyone have the 8485 CCII)
 
Thanks Rob, The type I and II connectors can be seen at: (URL) flex cables are also shown with the "pssible" lengths for the 8485. When I scaled the cable on page 110, I came up with 17.2cm (and it came-up short when I built that assembly), but the (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
 
  More powerful motor (was: stuff)
 
Maybe the RCX could be rigged up to control a speed controller from an RC car. (...) Joel Shafer joel@connect.net (26 years ago, 15-Oct-99, to lugnet.robotics)


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