 | | Re: Probs with NQC-Website
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try this (URL) Mientki (...) (23 years ago, 26-Oct-02, to lugnet.robotics.rcx.nqc)
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| | Probs with NQC-Website
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For minimum 2 days I have problems to get the NQC website (URL) . There is following error message: |Forbidden |You don't have permission to access /~dbaum/nqc/ on this server. | |Apache/1.3.26 Server at www.enteract.com Port 80 Is this site down or (...) (23 years ago, 26-Oct-02, to lugnet.robotics.rcx.nqc)
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| | Demo of Lego Studio?
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Hello, I have just bought VC and I think the camera look like the one in Lego studio. Is there a demo of Lego Studio on the net? I would like to try it out before i spend 180+$ on the set. Anybody know if it is posible to just buy the software? Lars (...) (23 years ago, 26-Oct-02, to lugnet.robotics.vc)
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| | Re: template resizing
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Did you try messing with the ShowTemplatePopup and ShowTemplateForm values in the registry? What about pressing F9 while you are in Bricxcc? Timothy (...) (23 years ago, 26-Oct-02, to lugnet.robotics.rcx.nqc)
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| | Re: IC 4.01
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Hi Scott, you may get interactive c from (URL) have versions for Windows, MacOS 9 and X, and Linux. Instructions have been documented in (URL) get more information about the programming robots with interactive c from Fred Martin and his Handyboard (...) (23 years ago, 26-Oct-02, to lugnet.robotics)
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| | template resizing
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OK. I'm stumped. Unfortunately, I haven't learned NQC well enough yet to use it without the template function in BrixCC. The fact is, I'm downright dependant on it. For whatever reason, in the last 3 months since the last RTLToronto contest (when I (...) (23 years ago, 26-Oct-02, to lugnet.robotics.rcx.nqc)
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| | Re: Problem with auto-steering mechanism.
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That would be here: (URL) tried building it, and it didn't work very well. Maybe I did something wrong. (...) (23 years ago, 26-Oct-02, to lugnet.robotics)
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| | Re: Problem with auto-steering mechanism.
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(...) Yes - that seems to work too - but it still needs one wheel in the middle to make it practical and that added to the length of the differential makes for a VERY tall vehicle. Even my original design suffers from that problem. I'm having to (...) (23 years ago, 26-Oct-02, to lugnet.robotics)
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| | IC 4.01
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Has anyone used Interactive C for programming their robots? Does anyone have any links to info. about IC? Thanks Scott (23 years ago, 26-Oct-02, to lugnet.robotics)
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| | Release candidate brickos-0.2.6.08 avail for testing
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This is our second publicly visible test release. We will announce when we think we are closing in on the actual release (We think this may happen, yet this December.) Details regarding how to provide feedback are at (URL) can download from (URL) (...) (23 years ago, 26-Oct-02, to lugnet.robotics.rcx.legos)
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| | Re: Problem with auto-steering mechanism.
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<snip snip snip> (...) if i remember correctly there was something where the guy did something like put a differential through the turntable with the 24t part of the diff inside the 24t inside gearing and then made a sort of limited slip axel (did i (...) (23 years ago, 25-Oct-02, to lugnet.robotics)
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| | Re: Problem with auto-steering mechanism.
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May I give it a go?..... I'm not exactly sure of the Toy you speak of, Hmmm. I also have seen a Toy that does this. I brought a gift from Zany Brainy for my Friends Son's Birthday. The thing was neat! It was a Clear Ball and had a little I think, (...) (23 years ago, 25-Oct-02, to lugnet.robotics)
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| | Re: Problem with auto-steering mechanism.
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(...) > >> ....*OH*...so there is only one wheel in your solution. Hmmm - I hadn't (...) Aha! That works a treat! (URL) a bit slow moving with that gearing - but I'll soon fix that) Many thanks. ---...--- Steve Baker ---...--- HomeEmail: (...) (23 years ago, 25-Oct-02, to lugnet.robotics)
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| | Re: Problem with auto-steering mechanism.
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(...) Yeah - exactly. (...) Limiting the rotation like that would remove the very feature of this mechanism that I need - the ability to escape (eventually) from any kind of corner. (...) That might work - but it comes into the catagory of 'iffy' (...) (23 years ago, 25-Oct-02, to lugnet.robotics)
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| | Re: Problem with auto-steering mechanism.
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(...) The "Cy-Purr Mouse" cat toy seems to be sold just about everywhere (including my local supermarket) for $9 US or so. See, for example*: (URL) employs the principle you are describing about as precisely as I can imagine. The only problem I've (...) (23 years ago, 25-Oct-02, to lugnet.robotics)
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| | Re: Beta Tester(s) wanted NQCSpeechCompiler
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|
(...) (URL) (23 years ago, 25-Oct-02, to lugnet.robotics.rcx.nqc)
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| | Re: Problem with auto-steering mechanism.
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(...) I find it hard to believe some 'iffy' condition would be required for a mass-producted childs toy. (so you hope) I have two suggestions. 1) Limit the rotation of the turntable to 180 degrees. (or 180 each direction) That should keep it from (...) (23 years ago, 25-Oct-02, to lugnet.robotics)
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| | Problem with auto-steering mechanism.
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|
I've been trying to build a mechanism I remember seeing on a kids toy. What I'm thinking of is a vehicle with two un-driven wheels at the back and two wheels at the front that are mounted on a turntable such that they normally pull the vehicle (...) (23 years ago, 25-Oct-02, to lugnet.robotics)
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| |
| | Re: Beta Tester(s) wanted NQCSpeechCompiler
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|
"Stef Mientki" <s.mientki@ids.kun.nl> wrote in message news:H4IC2q.8HB@lugnet.com... (...) Dasher? No, do you have a URL? Dean (...) and (...) as (...) the (...) felt (...) spirit (...) correspondence. (...) (23 years ago, 25-Oct-02, to lugnet.robotics.rcx.nqc)
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| | Jamocklaquat - Mission 5 Sneak Peak - Spine Segment 1
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|
Out on the Town, Jama can now take a bow. (URL) (23 years ago, 25-Oct-02, to lugnet.build.mecha, lugnet.technic, lugnet.robotics)
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| | Re: Beta Tester(s) wanted NQCSpeechCompiler
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|
hi Dean, ever heard of "Dasher", could be an alternative too ? Stef (...) (23 years ago, 24-Oct-02, to lugnet.robotics.rcx.nqc)
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| |
| | Re: Snaptrax remote control vs other Spybotics remotes control
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|
"David Koudys" <dkoudys@redeemer.on.ca> wrote in message news:H4HLMq.B5E@lugnet.com... (...) ;) ). (...) after (...) and (...) To get it to transmit on all channels again you must hit that forth button. Then it resets it back to all channels... (...) (23 years ago, 25-Oct-02, to lugnet.robotics.spybotics)
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| | New Syngress RIS 2.0 Book!
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Syngress has published another LEGO book, continuing the series started by the Dark Side Developer's Kit book, and to be finished up by the Ultimate Builder's Set book. I think all three will be available in a kit too. This current book is specific (...) (23 years ago, 24-Oct-02, to lugnet.announce, lugnet.books, lugnet.robotics, lugnet.technic) !
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| |
| | Re: h8300-hms-ld segmentation fault under WinXP
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|
"Joseph Woolley" <jwoolley@spamblock....ht.rr.com> wrote in message news:H4HvF3.C03@lugnet.com... (...) Win2k. (...) Ah, so it's not just me. I've been tearing my hair out trying to figure out what I might be doing wrong. A few years ago I had (...) (23 years ago, 24-Oct-02, to lugnet.robotics.rcx.legos)
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| | Re: h8300-hms-ld segmentation fault under WinXP
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|
I don't think the problem is WinXP specific: I had the same issue on Win2k. I ended up using the prebuilt gcc/binutils from hitachi for that reason. However, the prebuilt set is quite a bit older. I hope this issue can be worked out so we can begin (...) (23 years ago, 24-Oct-02, to lugnet.robotics.rcx.legos)
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| | h8300-hms-ld segmentation fault under WinXP
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|
Hello, Are there any know problems getting the h8 cross compiler working under Windows XP? I'm using the latest cygwin environment, along with gcc3.2, newlib1.10, and have tried both the binutils source distributed with cygwin (2002070601?) and I (...) (23 years ago, 24-Oct-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: Snaptrax remote control vs other Spybotics remotes control
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|
(...) From my experience, The remotes, when first turned on, seem to send out the signals on all channels (1,2,3), until a specific channel is picked--then the remote only works for the robot that is on that specific channel. This happened with the (...) (23 years ago, 24-Oct-02, to lugnet.robotics.spybotics)
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| | Re: Battery drain just to run a program?
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|
(...) I think a switched on RCX that doesn't use sensors or motors draws ca 10mA, regardless of the program running. That's enough to drain batteries in a few days. Jürgen (23 years ago, 24-Oct-02, to lugnet.robotics)
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| | Snaptrax remote control vs other Spybotics remotes control
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Did you noticed that Snaptrax remote control can directly control any Spybotic, as others remotes can't ??? I'm wondering why... - Christophe - (23 years ago, 24-Oct-02, to lugnet.robotics.spybotics)
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| | Re: Battery drain just to run a program?
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|
(...) Yes - most ultra-low power devices actually shut down most of the CPU circuitry for most of the time...just waking up when something interesting happens. Your CPU was running at full speed the whole time. Imagine something like a GameBoy (...) (23 years ago, 23-Oct-02, to lugnet.robotics)
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| |
| | Re: BrickOS issues
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|
(...) The brickOS team thanks you for mentioning this. It is our goal to continue to simplify this experience. We always enjoy hearing that we are making progress. (...) We hear you and have addressed some of them... (...) This is intentional for (...) (23 years ago, 23-Oct-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: Project WIRRL Update
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|
I have used the Radiometrix BIM-433-F transceiver which is sold via the usual elecrtonics catalogues. It's a 433MHz half-duplex transmitter/receiver (34x23x8mm) at 56 UK pounds. We tested it in a stone building and found we could just communicate at (...) (23 years ago, 23-Oct-02, to lugnet.robotics)
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| | Battery drain just to run a program?
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|
I built a simple clock that displays the minutes and seconds on the LCD and chimes the hours by striking a triangle (the musical instrument) by running a motor for 20 thousanths of a second, as suggested by the Drummer example in the Farrari book. I (...) (23 years ago, 23-Oct-02, to lugnet.robotics)
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| | Re: brickOS & GNU Pascal
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|
(...) Personally, I think this is great. If a GUI can be developed for BrickOS, it will be a huge boost to BrickOS, because it should be MUCH easier for people to use it. Between this, the DJGPP compiler Ed's working on, and the whole new surge in (...) (23 years ago, 23-Oct-02, to lugnet.robotics.rcx.legos)
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| | brickOS & GNU Pascal
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|
This is extremely preliminary, but I can't wait to share the news. I've managed to build a Hitachi H8 cross compiler for GNU Pascal (under cygwin on W2K) and have successfully downloaded and ran the following Pascal program on brickOS. program (...) (23 years ago, 23-Oct-02, to lugnet.robotics.rcx.legos)
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| | Re: Another update for WIRRL
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|
(...) I guess that's because of regulatory issues. Getting anything with radio transmission approved for all countries Lego wants to sell in can prove a daunting task... And IR can prove very effective: did you try Spybotics remote control? it (...) (23 years ago, 23-Oct-02, to lugnet.robotics)
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| | Re: Another update for WIRRL
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|
"Gareth Bestor" <bestorga@us.ibm.com> wrote in message news:H4E4uq.JvL@lugnet.com... (...) in (...) eyeing (...) receiver (...) reveiver (...) I've also followed this intresting thread. And now I'm wondering why Lego have used the infrared (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | Re: Another update for WIRRL
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I should have removed the word "messenger". After all, doing something by "proxy" would imply a messenger-type role. What I meant was, for DeviceA to send a message to DeviceB, they would have to use some sort of proxy or router between them (the (...) (23 years ago, 23-Oct-02, to lugnet.robotics)
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| |
| | Re: Mindstorm Telerobot
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|
(...) (URL) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | Re: Cracking open the RCX
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|
(URL) B" <lego-robotics@crynwr.com> wrote in message news:E1846MB-0007HP-...url.com... (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | Re: Mindstorm Telerobot
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|
Hey Guys, Has Anyone of ull hooked up the Lego To the Internet basically a Telerobot, if so do sent me details and also the web link. Thanks Shibu (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | Re: What version for my rcx 1.5?
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|
(...) The brick version doesn't really mean a lot (other than that version 1.0 bricks had the external power jack). If you download the firmware from the 2.0 SDK then your 1.5 brick is an RCX 2.0 and it will work perfectly well with NQC, BricxCC (...) (23 years ago, 22-Oct-02, to lugnet.robotics.rcx)
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| | Re: Another update for WIRRL
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|
What's a "proxy messenger"? Couldn't the reflection problem be solved by placing a barrier in between the emitter and receiver? Timothy (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | Cracking open the RCX
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|
I had a link to the schematics and working on an RCX, I thought, but I can't find it. We have an RCX that's "A" motor port is malfunctioning. If it's a loose connection, we'd like to re-solder it. Anybody have a link to nice, clear pictures of what (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | RE: Another update for WIRRL
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|
Just in case people are a bit confused by the schematic, the circuit would be needed for each device that will participate in an RF bridge. I abandoned the idea of using two different frequencies because: 1) As soon as you attempt communication (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | What version for my rcx 1.5?
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|
Hello, I am starting to look at my mindstorm again. It is version 1.5 and I have prev. used NQC and RcxCC. What should I use now? How about the new sdk 2.0? Can I use that one? Can I use the new versions of NQC and RcxCC? Hope someone can bring me (...) (23 years ago, 22-Oct-02, to lugnet.robotics.rcx)
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| |
| | Re: Update for DJGPP version
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I have placed instructions for building the cross compiler for DJGPP on our website, (URL) They are (as of this posting) incomplete. Biunutils can be configured and built but gcc currently has a proplem in the build stage. It looks like a c++ error (...) (23 years ago, 22-Oct-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: serial tower
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I have an extra serial, do you want to trade? Timothy (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| |
| | Re: Another update for WIRRL
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|
I'm watching your postings with some interest as I'm also very interested in implementing are wireless RF<->IR interface for the RCX, and have been eyeing the Linx transmitter/receivers too. One question - could some of the transmit/receive (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | Re: Another update for WIRRL
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|
Instead of worrying about the half duplex communication, wouldn't it just be easier to have tranceiver at two different frequencies? If I am missing something, go ahead and say so. I know very, very little about electronics. Timothy (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | RE: Another update for WIRRL
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|
I just noticed at least one glaring error with the new schematic... Say, for argument, an RCX sends "1001", which, in IR, would be "0110". The IR detector of WIRRL would do nothing for the first bit ("0"), but the next bit ("1") should be sent over (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | differences between the legOS versions
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|
Hi all, Can anyone tell me, where i can get informations about the differnces of the serveral legOS versions. I use currently legOS 0.2.3 Christian (23 years ago, 22-Oct-02, to lugnet.robotics.rcx.legos)
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| | Re: Thinner Diff (was: something i said?)
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|
you could make that one stud thinner by placing it within a framework. now i have something else to work on... i did recently make on from a 24t gear but it rotates around one of the four holes off axis and is really only good for use in a sensor (...) (23 years ago, 20-Oct-02, to lugnet.robotics, lugnet.technic)
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| | Re: something i said?
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|
Finally i can give credit where credit is due. I remember seeing the pics but checking my directory i didn't find a the original names so i couldn't remember who you were. anyways, proper credit will be given in the next day. regards, m. "Rick S" (...) (23 years ago, 20-Oct-02, to lugnet.robotics, lugnet.technic)
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| |
| | Another update for WIRRL
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|
To those interested, I've made a new schematic (WIRRL Rev. 2a) using a better TX/RX pair (Linx LC Series) and I think I've found a possible better solution for handling flow of data. This new diagram eliminates three transistors and replaces the (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | MOC: Technic-scale tower crane
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Although it was completed a while ago, recent posts [1] have prodded me into making an official announcement. Check out this seven-foot-tall tower crane: (URL) aim was to create a functional model that would fit in with the style of classic Technic (...) (23 years ago, 22-Oct-02, to lugnet.announce.moc, lugnet.technic, lugnet.build, lugnet.robotics.rcx, lugnet.org.ca.nalug) !!
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| | Re: Detecting tilt with an Accelerometer.
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|
(...) Yes, this would be a simpler solution. Using the difference and the sum of the two accelerometers as two inputs would likely make the driver logic very neat and clean. In addition, it could be useful to have two (much more sensitive) (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | Re: Anyone for Chess?
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|
(...) Fantastic - Thanks for the link! Do you own one? The Phantom robot really moves quickly doensn't it - I suppose that's the advantage of dedicated engineering over Lego. After a quick web search (and lots of Andrew Lloyd Webber references) I (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| | Re: Detecting tilt with an Accelerometer.
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|
(...) Alex, I think that you would only require two accelerometers, one positioned low near the wheels, the other near the top. Both should be oriented to measure accelerations along the direction of travel. Using two accelerometers gives you a (...) (23 years ago, 22-Oct-02, to lugnet.robotics)
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| |
| | Re: new icon in RCX LCD readout
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|
Mike, Rob Limbaugh emailed me with this suggestion and I thought it was likely as I was fiddling around with the datalog button in BricxCC right before I changed the batteries. I am not a Robolab user but in fact use NQC. I have just used the (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: new icon in RCX LCD readout
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|
(...) I have no idea how that would come to be blinking, but normally it's the datalog icon. It means something is in the datalog, usually (I say that because I don't know why it would blink after a battery swipe). I don't know how you would erase (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | new icon in RCX LCD readout
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|
Yesterday I took the batteries out of my RCX to replace them with some rechargeables. After doing this I noticed a new icon on the LCD readout. On the right hand side, about midway down there is now is a pie shaped one quarter of a circle (two (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | serial tower
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I recently bought a second RIS 2.0 and was wondering if anyone had a serial tower that they would be willing to trade for a usb tower. If anyone is interested please contact me. rcx2man@hotmail.com Thank You Scott (23 years ago, 21-Oct-02, to lugnet.robotics)
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| |
| | Re: Detecting tilt with an Accelerometer.
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|
(...) No acceleration along the sensed axis, yes. (...) At this point, we need to know the type of sensor you're using (is it a pendulum type sensor, or a linear compression sensor, or gyroscopic precession sensor, or something even stranger?), and (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| |
| | RE: Detecting tilt with an Accelerometer.
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|
(...) Steve, The accelerometer is actually a micromachined beam. Think of a miniature version of your arm holding a 5 lb brick. Your measurement axis is rotation about the shoulder joint. Whether or not you or the brick are moving, the brick is (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| |
| | Re: Detecting tilt with an Accelerometer.
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|
(...) Stop eating for just a sec, and help me understand this. If a sensor (accelerometer) is parallel to the earth's surface, the reading should be zero, right? (no acceleration due to gravity) But, if the object holding the sensor begins to fall (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: Detecting tilt with an Accelerometer.
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|
(...) I think I figured this out, right before I read this. I'm not sure if this is what you're saying, but if I put the sensor on the bottom, under the axle, then it will spin opposite the direction the LegWay is falling. So, it could actually (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | RE: Detecting tilt with an Accelerometer.
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|
(...) <sound of Ralph eating his poorly thought out words> John, You are, of course, correct. The beam is always under 1 G if it is parallel with the Earth's surface. In free-fall, the beam becomes "weightless" and the accelerometer returns 0. As (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| |
| | Re: Detecting tilt with an Accelerometer.
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|
A typical micromachined accelerometer WILL measure tilt of a platform that is not otherwise accelerating. The value the sensor returns will be g*sin(tilt angle) if the sensor is placed level on/in the platform. If the platform is accelerating, the (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: Detecting tilt with an Accelerometer.
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|
(...) it. (...) Umm... that is a type of accelerometer, unless there's a terminology difference that I'm not aware of. (Consider what happens to the sensor when pushed sideways (not on axis) without rotation... you get transient swings representing (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: Detecting tilt with an Accelerometer.
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|
Hi again, (...) Ok, i have just discussed this with someone having a ph.d. in physics and that's what he told me: Think of the segway as some big chimney you want to blast. These things break into two pieces while falling sideways. This is because (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: Detecting tilt with an Accelerometer.
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|
(...) Do you have some concrete reasons why it won't work, to go along with your assertion (for those of us just now joining the conversation)? I suspect that it could be made to work (in conjunction with other data like what the motor output is, (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: Detecting tilt with an Accelerometer.
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|
(...) It might work, but imho not the obvious way. How it won't work: Measure the acceleration sideways. You would measure an acceleration if you were holding the whole setup at a certain angle, but since the whole sensor including the mechanic (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | RE: Detecting tilt with an Accelerometer.
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|
(...) Let me chime in and say "It won't work" Tilt detection is almost always done using a simple inclinometer. This is just a weighted pendulum on a potentiometer or shaft encoder. Now, that being said, could figure out that an object is rotating (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Detecting tilt with an Accelerometer.
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|
I've had discussions lately with a VERY large number of people about using an accelerometer to detect if an object (like a LegWay) is tilting. I'd like to continue the discussion here, with anyone willing to talk about it. Let me start by saying, (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Tower crane
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|
(URL) confess not looking closely at this when it was first publicised. It's amazing. (see also : (URL) ) There is mention at the end of the page of the use of an RCX but not much additional detail... John K. if you're on the list (or anyone else), (...) (23 years ago, 21-Oct-02, to lugnet.org.ca.nalug, lugnet.modelteam, lugnet.technic, lugnet.robotics.rcx)
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| |
| | Re: Project WIRRL Update
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|
Replying to myself... I dismissed commercial solutions (proper radio modems) because they all looked too expensive. But I've found a beauty: (URL) RS232 @ 38.4Kb full duplex, 15Kbit rf, integral antenna, just under £30 (~$50) each for single units. (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| |
| | Re: Anyone for Chess?
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|
Andy: (...) Yep, many years ago I wanted a "new" chess board. It did what your RCX robot does. It was called Phantom Chess -- 6100 by Milton Bradly. Even then it was very expensive. (about $1200 CAN) a link is here: (URL) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| |
| | Re: Project WIRRL Update
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I'm looking for an RF solution for PC-RCX communication as well, been thinking along very much the same lines as Rob seems to have so far, I too was pondering how to deal with TX/RX switching (though I've not got as far as building a circuit, and (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: LEGO MindStroms 2.0: Alternative transmission techniques
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(...) Hi! Basically I think that for communication a Cybermaster would be better, but it lacks a bit of "programmability" as far as I know. And we also want to attach individual sensors and do more than just navigation. The IR to RFand RF to IR (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Project WIRRL Update
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Hello everyone, WIRRL stands for "Wireless Infra-Red Radio Link". Creating each leg of the RF link independantly isn't really a problem (once you have a reliable 38kHz IR carrier wave). The problem is eliminating link feedback by controlling the (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: LEGO Mindstroms 2.0: Alternative transmission techniques
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(...) Andreas, IR struggles to keep contact in one room, so you need an RF wireless solution. It is possible to include a PDA with Bluetooth or WiFi support as part of your robot, and communicate between the PC and the PDA over the RF protocol, and (...) (23 years ago, 20-Oct-02, to lugnet.robotics.rcx.java)
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| | Re: Anyone for Chess?
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(...) I remember seeing one about 10 years ago, but I don't think it was very popular because of the speed and accracy. I beleive it used a touch sensor grid to detect moves, rather than scanning the board for changes. To move pieces out of the way, (...) (23 years ago, 20-Oct-02, to lugnet.robotics)
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| | AW: LEGO MindStroms 2.0: Alternative transmission techniques
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I have read the book "Core Lego Mindstorms Programming" and this book also discusses navigation. Since this is also my first project with the RCX I don't have much practical experience with navigation. I'm close to testing my dead reckoning system. (...) (23 years ago, 20-Oct-02, to lugnet.robotics)
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| | Re: LEGO MindStroms 2.0: Alternative transmission techniques
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(...) You don't discuss how the robot (or PC) knows where it is. That's the hard part - there has yet to be anything remotely like a solution reported here. We've discussed placing landmarks (like marks on the ground, flashing lights, etc) around (...) (23 years ago, 20-Oct-02, to lugnet.robotics)
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| | Re: About Stop and Float mode
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(...) Yes - that's it - it might not be an open contact though - but a high resistance of some kind. (...) This seems a dangerous thing to do (for the health of the RCX). ---...--- Steve Baker ---...--- HomeEmail: <sjbaker1@airmail.net> WorkEmail: (...) (23 years ago, 20-Oct-02, to lugnet.robotics)
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| | Re: LEGO MindStroms 2.0: Alternative transmission techniques
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I have seen IR-to-RF converters for sale. They are been used for remote control of any TV/VCR units without having the line of sight from the TV/VCR-remote controller to the unit. It is working like this; the remote controller sends a IR signal to (...) (23 years ago, 20-Oct-02, to lugnet.robotics)
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| | About Stop and Float mode
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When I set the output to STOP mode, motor have a brake against moving, when I set output on FLOAT motor can "coast". Ok, until now, But, electrically, how what is the difference ? i mean, if I set in STOP it seems that the motor is connected (...) (23 years ago, 20-Oct-02, to lugnet.robotics)
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| | Re: LNP
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How's this? (...) (23 years ago, 20-Oct-02, to lugnet.robotics.rcx.legos)
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| | Re: LEGO MindStroms 2.0: Alternative transmission techniques
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(...) Or forbid tables etc. and communicate by reflection on the ceiling. (...) Right. Some markings on the floor can make it easier. (...) I can't imagine you never heard of leJOS ((URL) definitely runs Java on the RCX. (...) I'd also suggest to (...) (23 years ago, 20-Oct-02, to lugnet.robotics)
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| | RE: LEGO MindStroms 2.0: Alternative transmission techniques
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Hi everybody! First of all, this is my first post to this list although I'm a member for already a couple of months. I'm currently working on a quite similar project for school - it's the last year for me. The school is for something like (...) (23 years ago, 20-Oct-02, to lugnet.robotics)
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| | Re: something i said?
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"Mike Fusion" <mikefusion@hotmail.com> wrote in news:H3y1zr.77x@lugnet.com: (...) Ooh ooh ooh! I wonder if this was based on my idea from last year. I created this Nov 2001 to help someone out. (URL) so, that's cool that it's being further (...) (23 years ago, 20-Oct-02, to lugnet.robotics, lugnet.technic)
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| | Re: Remote controlled webcam and train
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(...) Yes I did ;-) Ok, the cam is now on again for the next 12+ hours. zany® (23 years ago, 20-Oct-02, to lugnet.robotics)
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| | LNP
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Can anyone help me find information about LNP? I want to know how to send/receive serial data. If you know where I can get more info, please tell me. I have a cool robot I want to make remote-controlable. Thanks Steve (23 years ago, 20-Oct-02, to lugnet.robotics.rcx.legos)
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| | Re: LEGO MindStroms 2.0: Alternative transmission techniques
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(...) Well, there are MANY difficult problems here. 1) Communications. The RCX uses IR - which is pretty much line-of-sight only - so as soon as your robot drives under a table or around a corner, it'll have to navigate by itself, record all the (...) (23 years ago, 19-Oct-02, to lugnet.robotics)
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| | Thinner Diff (was: something i said?)
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(...) After playing with your designs for a bit, I decided to see if I could make it any thinner. I did, but it's a compromise: compared to your thindiff, I suspect mine is looser, less sturdy, and more prone to binding. It is, however, only 5 studs (...) (23 years ago, 20-Oct-02, to lugnet.robotics, lugnet.technic)
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| | Re: Announcing LegWay code, Finally
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If others are like me, we've been holding our breath, knocking on wood, and chanting mantras in the hope that nothing got in the way of you sharing the code. The *last* thing we wanted to do was jinx it by bombarding you with groveling, slathering (...) (23 years ago, 20-Oct-02, to lugnet.robotics)
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| | LEGO MindStorms 2.0: Alternative transmission techniques
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Hi, we want to build a Roboter with the following characteristics and under the following conditions: The roboter should be able to drive through a whole building by itself. During his drive he detects obstacles, walls etc. Everything he detects he (...) (23 years ago, 19-Oct-02, to lugnet.robotics.rcx)
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| | LEGO Mindstroms 2.0: Alternative transmission techniques
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Hi, we want to build a Roboter with the following characteristics and under the following conditions: The roboter should be able to drive through a whole building by itself. During his drive he detects obstacles, walls etc. Everything he detects he (...) (23 years ago, 19-Oct-02, to lugnet.robotics.rcx.java)
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| | LEGO MindStroms 2.0: Alternative transmission techniques
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Hi, we want to build a Roboter with the following characteristics and under the following conditions: The roboter should be able to drive through a whole building by itself. During his drive he detects obstacles, walls etc. Everything he detects he (...) (23 years ago, 19-Oct-02, to lugnet.robotics)
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