 | | Re: Precise turns of any angle! -- Rotation Sensor Information
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(...) Yes. Actually it's two step, the A/D interrupt sets a flag and a routine in the firmware checks the flag periodically and does the processing, most of it being calling the ROM routine. (...) No. You can read height in the diagram as voltage, (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| |
| | Re: Assembly Language Programming on the RCX
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(...) When the RCX 2.0 firmware came out, LEGO released an updated SDK ((URL) to take advantage of all the new stuff. One of the new features they provided was a new language called LEGO Assembler (LASM). This is as close to the hardware as you can (...) (24 years ago, 14-Jan-02, to lugnet.robotics.rcx)
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| | Assembly Language Programming on the RCX
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I'm interested in programming the RCX in assembly. I'm trying to get total control over the hardware in the manner I'm most familliar with. Everyting I've seen so far seems to use higher level languages (Java/variants of C/etc.) Does anyone know of (...) (24 years ago, 14-Jan-02, to lugnet.robotics.rcx)
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| |
| | Off Topic Posts
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My sincerest appologies to you all. When I replied to all I had intended to remove the mailing list so as to avoid filling it with crap, but when I got done writing the email, I forgot to do so. I also do not like when this sort of material is (...) (24 years ago, 14-Jan-02, to lugnet.robotics)
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| | Re: Fwd: FW: Social Security
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(...) *PLEASE* Stop sending this crap to the Lego Robotics mailing list. We simply are not interested in your political views. Go find another mailing list. ---...--- Steve Baker ---...--- Mail : <sjbaker1@airmail.net> WorkMail: <sjbaker@link.com> (...) (24 years ago, 14-Jan-02, to lugnet.robotics)
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| | RE: Ants, grasshoppers and "America"
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Could you please keep posting to this list to be somewhat related to Mindstorms? I subscribe to this list to get Lego mindstorm info, and not your political views. I'm sure there is a proper place somewhere for these types of posts, please post them (...) (24 years ago, 14-Jan-02, to lugnet.robotics)
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| | RE: Fwd: FW: Social Security
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Interesting and tough words, however, this is the same mentality that England had in the days when people like Robin Hood had to be the "social programs". If you eliminate government, after having a democracy for so long, it would be a disaster. I (...) (24 years ago, 14-Jan-02, to lugnet.robotics)
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| | RE: Ants, grasshoppers and "America"
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Well, I only have one thing to say. I have as many complaints with the US as the rest of you, BUT, to borrow from Richard Feynman, don't bother to criticize if you don't have an alternative solution to offer. Do something, don't sit around and talk (...) (24 years ago, 14-Jan-02, to lugnet.robotics)
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| | Re: Precise turns of any angle! -- Rotation Sensor Information
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(...) I believe that in this case, you should use a light sensor looking at a wheel that's white with a black line marked on it. The software for reading this is identical to what you would use for line following (a very well researched topic!) - (...) (24 years ago, 14-Jan-02, to lugnet.robotics)
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| | Re: Precise turns of any angle! -- Rotation Sensor Information
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(...) In 'The LEGO Lugger', previously posted at (URL) the extended drive shafts for both sides of a tracked vehicle, moving in opposite directions, are summed in a differential with the difference (hopefully zero)fed to the rotation sensor. Because (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | Re: Review - DIRPD Mindstorms Sensor
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(...) Thanks for that, Dave. As more non-LEGO (aftermarket) devices come out I wish there were more reviews. It's one thing to read the specs and quite another to read about a successful project using the part, stating its effective range, saying (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | Re: missing part
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(...) The earlier RIS sets included a parts list. You can verify against that list. LEGO has a very good reputation for correcting this type of problem via their customer service line. Don't know what that is in Switzerland, though. (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | missing part
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Hello together, I bought an RIS2.0 kit at christmas. I have the feeling, that I may have a missing part. I am missing the 4th tire, which is for example needed for the the Acrobot (the biggest tire). Has anybody experienced something like this? Is (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | Re: Ants, grasshoppers and "America"
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Americans? Americans would have to live in America. But the America I remember is gone. The one that helped Europe and Japan up out of the rubble of W.W.II. The big Dam projects. The interstate Highway system, communication, electrification, stuff (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | Review - DIRPD Mindstorms Sensor
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Hi all, Not sure if there is a better place for sensor reviews, but I figured that Robotics would be a good start. Forgive me if I posted to the incorrect place. I have completed my review of the TechnoStuff Dual Infra-Red Proximity Detector (DIRPD) (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | Brickremote and lremote
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Hi, where can I get brickremote and lremote? The link (URL) published in this newsgroup is dead. Thanks, Michael. (24 years ago, 13-Jan-02, to lugnet.robotics.palm)
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| | Rotation Sensor Information
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I agree this is the heart of the problem... I made a small experiment and saw strange things on my scope. Has anyone already open a Lego rotation sensor ? I'd like to have a look to internal photographs and/or see a circuit diagram. I tried to open (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | Re: FW: The Ant & The Grasshopper
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Here's a simple solution. If the Government stops taking our money they can not give it away. If Government stayed small in the first place there would be no taking from one and giving to another. If there were no Fed Healthcare, Public Schools, (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | Re: Fwd: FW: Social Security
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Here is the quickest, easiest simplest and most fair solution. KILL the whole program (Social Security and the Politician one)! Stop being stupid and relying on the government to solve all your problems. Hopefully, you're intelligent enough to (...) (24 years ago, 11-Jan-02, to lugnet.robotics)
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| | Re: Precise turns of any angle! -- Rotation Sensor Information
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(...) Excellent! Someone who *knows*! (...) I guess so. You kinda have to hope that Lego designed the sensor to work when directly connected to a motor though - they surely imagine that this will be the most common use for 'naive' users. (...) OK - (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| |
| | Re: [Legousb-devel] Yes, the puzzle is solved - legousbtower + nqc for linux.
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Hello, I can confirm, that this worked! First time lego usb support on my linux machine: jstifter@suba:~/nqc-2.4.a4 > bin/nqc -Susb -TRCX2 -d test.nqc Downloading Program:..complete Battery Level = 9.2 V jstifter@suba:~/nqc-2.4.a4 > I had to comment (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| |
| | Re: Some remarks / questions about Brixcc
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some other remarks (version 3.3.3.2) 1. when loading a large program, Brixcc gives an error message "Program execution timed out, try ..", although the downloading still continues and will finish correctly. 2. when downloading an even larger program (...) (24 years ago, 13-Jan-02, to lugnet.robotics.rcx.nqc)
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| | Some remarks / questions about Brixcc
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hi John, some remarks / question about Brixcc (I used versions 3.3.2.13 and 3.3.3.2) 1. "Watching the Brick" only polls when the window has focus. I use it often in combination with the direct control and then I have to be continously aware if the (...) (24 years ago, 13-Jan-02, to lugnet.robotics.rcx.nqc)
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| | Re: Precise turns of any angle! -- Rotation Sensor Information
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Hi, I did the rotation sensor fix for leJOS. In the course of that I did a lot of tests and analysed the ROM code, so I know a bit about this. (...) You must have been very lucky. (...) Yes, that's right for the LEGO firmware. For legOS/leJOS it's (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | Vision command and Lego Studio under Windows XP
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System recognizes camera but I get error message - software does not support Windows 2000 or Windows NT (I suppose this is the default message for an unknown version). So.......is Lego coming out with an upgrade - seeing as any new system comes only (...) (24 years ago, 13-Jan-02, to lugnet.robotics.vc)
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| |
| | Re: Help! Hanyboard Assembly Testing problem!
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Hi! I'm still can't get the chip to go into bootstrap mode. I've double checked I've got all the components installed in the correct direction, and inspected the entire board for shorts, and have found none! What can I do?? I'll try resoldering the (...) (24 years ago, 13-Jan-02, to lugnet.robotics.handyboard)
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| | TechTV features Mindstorms robot
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All -- I was on TechTV demonstrating my Mindstorms-based Rubik's Cube solving robot last Novemeber. I just found out that there's streaming video of the event on the web. So, if you want to see CubeSolver in action, go to (URL) click the red "Video (...) (24 years ago, 13-Jan-02, to lugnet.mediawatch, lugnet.robotics.rcx, lugnet.robotics)
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| | Retry count too small for nqc linux usb driver
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Hi Thomas, I just found that the retry count for EAGAIN in RCX_USBTowerPipe_linux::Write() was too small (10) for handling the large packets used in firmware downloading. It ran out of retries middle way in sending the continue downloading command (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | Re: Measuring robot turn angle
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Wanted to thank everybody for replies. I ended up attaching an 80-tooth gear to the rear axle (wheels are on the front set) after extending the axle. The rotation sensor is mounted on the chassis outside with an 8-tooth gear meshing to the other (...) (24 years ago, 13-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: Dave Chen's Function List
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(...) Message 1001, in case anyone was wondering. Better yet: (URL) been looking for something like this as well, so thanks for pointing me in that direction. Is there a more recent version? -- David Schilling (24 years ago, 13-Jan-02, to lugnet.robotics.rcx.legos)
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| | Two Servo motor Conteroler available !
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Two servo motor control for RCX available now. 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 ~2 degree resolution, and can move from 0 to 180 (...) (24 years ago, 11-Jan-02, to lugnet.robotics.rcx)
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| | Re: Precise turns of any angle!
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(...) drops counts. However, that only impacts the wall following application only to the extent that it would require periodically going through the initialization function which calculates the distance the robot currently is from the wall. The (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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(...) By "Six degrees of freedom" I mean: 1) Translation to Left/Right 2) Translation Forwards/Backwards 3) Translation Up/Down 4) Rotation left/right 5) Rotation fore/aft 6) Roll left/right. These are often called (respectively) by the names: Sway, (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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I am developing a two axis acceleration sensor that is RCX compatible. Unfortunately, that by itself is not sufficient for inertial navigation in a fixed plane. (i.e. a robot that stays on the floor) A fully inertial system would need a rotational (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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(...) Ah, I see. Thanks for your explanation. How would one make inertial sensors for the RCX anyway? I suppose you could rig a plumb bob to a rotation sensor - but as you had already pointed out, rotation sensors are inaccurate at low rotation (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: send message from ir-tower to rcx
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(...) I don't think you can with only Spirit.OCX. I think you need the capability of the new SDK. Have you been able to send bytecodes using Spirit, or are you using another tool? --Ian (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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(...) Actually, i think you could use TWO rotation sensors because the rotation sensors work in both directions, and Lego generally doesnt go up and down (but it might if you had some sort of maze with ramps). (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Precise turns of any angle! -- Rotation Sensor Information
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(...) I ran my rotation sensor in an experiment at nominal motor speeds of 300 rpm and didn't lose a single count in over 10 minutes of testing. I believe the 1250 RPM figure...although you may be right about it being worse with the RIS 2.0 (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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(...) The term "inertial guidance" refers to a navigational technique that involves carefully measuring the rotational and translational accelleration of the vehicle, then integrating that to derive the velocity and integrating *that* to get the (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: send message from ir-tower to rcx
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My replacement for spirit.ocx does not yet support sending messages to the RCX, but it would only take 10 min to add it. (It is planned, but first I am working on cloning spirit.ocx). As for receiving, the IR tower shuts down to fast to reliably (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: New MindStorms SDK
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(...) However, LIB made in this way does not work well. The /DEF option may make import library from .def file. (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: send message from ir-tower to rcx
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(...) I have had no trouble sending "message()" messages to the RCX by simply sending the correct sequence of bytes directly to the COM port. Is there some reason you can't do this? JB (24 years ago, 12-Jan-02, to lugnet.robotics)
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| |
| | Fwd: FW: The Ant & The Grasshopper
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(...) ___...___ MSN Photos is the easiest way to share and print your photos: (URL) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: New MindStorms SDK
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(...) Thank you, Antonello. I got TOWERAPI.LIB by your command line. -- mac (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Red Micromotors
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hi rich (...) i encountered something similiar lately: when the micromotor gets stalled and you want to run it in the opposite direction, it is blocked. probably due to the force that stalled it. i then had to either remove the stalling situation (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | RE: Precise turns of any angle! -- Rotation Sensor Information
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Steve Baker has done some wonderful experiments on the accuracy of the rotation sensor which can be read at the URL at the end of this message. I have a alternative explanation for the inaccuracy in the rotation sensor when used with the standard (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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(...) Uh, how do you mean? Inertia pretty much guides itself, unless you want to abolish Newton's First Law...? --Ian (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: send message from ir-tower to rcx
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(...) Those would be the RCX "mailbox" messages...the ones that RCXs send to one another using SendPBMessage. Spirit.OCX can do lots of things, but it can't cause the IR tower to send messages to the RCX. --Ian (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: send message from ir-tower to rcx
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(...) :) (...) Download the new Mindstorms SDK for the 2.0 firmware ((URL) It's really, really cool and it allows you to do all kinds of things that take advantage of the new firmware. (Interestingly enough, both of the following methods are (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Red Micromotors
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The only problem I've had is the snap on mounts breaking. If you can't get one of the motors working I'll be happy take a set of mounts off your hands :-) "Richard Clemens" <lego-robotics@crynwr.com> wrote in message (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Precise turns of any angle!
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(...) The trouble is that the rotation sensor drops counts when you run it at low speeds - especially if it's reversing direction frequently. You can read about my experiments that prove that fact here: (URL) told that you get much better results (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Yes, the puzzle is solved - legousbtower + nqc for linux.
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|
Dear Juergen and Andy, I found the option to turn on data debugging on legousbtower this evening. It all turned out to be an issue between uhci and legousbtower. From the out_callback I could tell, it always sent 8 bytes no matter what tower_send (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Precise turns of any angle!
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|
About a year ago I was inspired by discussions about how to get an RCX robot to make perfect 90 degree turns and also by an interest in traversing mazes and collision avoidance. I had an idea to navigate and turn using an approach similar to a (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: send message from ir-tower to rcx
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Hi Mat, (...) WHY ? That's what it's made for ! Rainer (I use it with VC++ 6.0) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| |
| | Re: MacNQC can't open the #include file
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|
(...) Hi John, I've just uploaded MacNQC 2.2.4 which fixes the #include problem. You need to have the include file in the same folder as the source file. Have Fun, Rob Bate (URL) (24 years ago, 12-Jan-02, to lugnet.robotics.rcx.nqc)
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| | Yes, the puzzle is solved - legousbtower + nqc for linux.
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|
Dear Juergen and Andy, I found the option to turn on data debugging on legousbtower this evening. It all turned out to be an issue between uhci and legousbtower. From the out_callback I could tell, it always sent 8 bytes no matter what tower_send (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| |
| | Re: newbie
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|
NQC is intended to write programs that run on programmable bricks (RCX, Cybermaster, and Scout). The 9751 is more like a peripheral for the host computer, so you'd need some tool that writes programs that run on the host. I think I've seen (...) (24 years ago, 12-Jan-02, to lugnet.robotics.rcx.nqc)
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| | usb not responding
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I plugged my usb tower in before I installed the Robotics invention system 2.0 software and now it dosent work. Does anyone know how to fix this? if so please email me. thanx. (24 years ago, 12-Jan-02, to lugnet.robotics)
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| |
| | Re: Many HandyBoard questions (and a few answers)
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(...) You attach the triacs to the handyboard, or is this just sequencing without using the HanyBoard? Either way I can get more information on how/what he did. BurningMan... gee who would have guessed :-) Sam (24 years ago, 11-Jan-02, to lugnet.robotics.handyboard)
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| | Help! Hanyboard Assembly Testing problem!
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|
Hi! I'm putting together my shiny new HanyBoard. I've got to the point where I'm testing the serial line/power led on the HanyBoard itself. The processor won't seem to go into bootstrap mode(ie, the green light won't go out, and attempts to download (...) (24 years ago, 11-Jan-02, to lugnet.robotics.handyboard)
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| | send message from ir-tower to rcx
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|
hi list! i want to send a single-byte message from the serial ir-tower to the rcx, preferrably with visual basic. a program running on the host pc should send/recieve message to/from the rcx. what i found up to now is: - sending messages from the (...) (24 years ago, 11-Jan-02, to lugnet.robotics)
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| |
| | Re: Will TLC continue to support Scout?
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|
At the risk of being flamed for "me too"ism.. I bought an RDS in mid-2000 while on business in the US (honest!), for my 7,10 + 12 year old's to get the hang of simple programming. I then grabbed NQC and downloaded the Scout SDK (before TLC removed (...) (24 years ago, 11-Jan-02, to lugnet.robotics.scout)
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| | Re: site update
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(...) Hi Mike, I was the designer. You could add a link to the Torsen on my page: (URL) said you made improvements to the design, but I couldn't tell what changed... Rob Stehlik (btw, you forgot the link to your own site:) (URL) (24 years ago, 11-Jan-02, to lugnet.robotics, lugnet.technic)
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| | Re: Using the Differential to drive straight.
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(...) I suspect there are two different issues being discussed here. One is to be able to go straight in some known direction. The other is be able to go straight. If you have a direction to go in, because you have a light beacon or a compass or a (...) (24 years ago, 11-Jan-02, to lugnet.robotics)
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| |
| | Re: Using the Differential to drive straight.
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|
I tried both of the drive trains in the Ferrari's book and still had problems getting the robot to to travel a straight line. The design they suggest was a huge improvement over a non-feedback direct differential drive, still I need precision for a (...) (24 years ago, 11-Jan-02, to lugnet.robotics)
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| | Re: Using the Differential to drive straight.
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I don't have the book either. Did Mario and Giulio seem to think this selectable torque locking helped in helping a robot travel straighter or turn more consistently? I had initially intended this to be a sort of transmission to give the option of (...) (24 years ago, 11-Jan-02, to lugnet.robotics)
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| |
| | Re: Will TLC continue to support Scout?
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dunno if TLC pays attention to this newsgroup, but i'm with you. bought the Robotics Discovery Set for my 7 year old nephew. i specifically wanted one he could use without having to fire up the PC, or learning how to program on the PC. plenty of (...) (24 years ago, 11-Jan-02, to lugnet.robotics.scout)
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| |
| | Re: Anyone there?
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|
(...) Isn't the IR system that the RCX already uses wireless? Or do you mean radio as opposed to IR? If you mean radio, what aspect of RCX communications do you wish to transport via radio - data that usually goes via IR? - some form of information (...) (24 years ago, 11-Jan-02, to lugnet.robotics.tele)
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| |
| | Re: Using the Differential to drive straight.
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|
I don't have this book yet. Can it be done with parts ONLY from the RIS set? --Jack Gregory Russell Nelson <lego-robotics@crynwr.com> wrote in message news:15423.9463.8629...nwr.com... (...) people (...) following (...) them (...) (24 years ago, 11-Jan-02, to lugnet.robotics)
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| | Re: Anyone there?
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|
hi Mike, (...) Yes I'm interested, I've just made my first steps with an IR remote control, which should also be capable of receiving data form the RCX. I'm also interested in more sophisticated technics as blue-tooth. And of course one the great (...) (24 years ago, 11-Jan-02, to lugnet.robotics.tele)
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| |
| | Re: Using the Differential to drive straight.
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|
David Chen writes: > I've been playing with the following design to try to overcome the > problems with getting the robot to drive straight while using an A B > Differential drive train (ie left side wheels driven by motor A, right > side by motor (...) (24 years ago, 11-Jan-02, to lugnet.robotics)
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| |
| | Re: Fwd: FW: Social Security
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|
(...) I fail to see how this relates to Lugnet.Robots. A more appropriate spot would be Lugnet.offtopic.geek. (perhaps) Thanks... Benjamin Medinets (24 years ago, 11-Jan-02, to lugnet.robotics)
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| |
| | Fwd: FW: Social Security
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|
(...) ___...___ Get your FREE download of MSN Explorer at (URL) (24 years ago, 11-Jan-02, to lugnet.robotics)
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| |
| | Re: New MindStorms SDK
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|
(...) sorry, I meant: LIB /DEF:TOWERAPI.DLL Antonello (24 years ago, 11-Jan-02, to lugnet.robotics)
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| | newbie
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|
Hello everybody, I`m just starting to use Lego Dacta products and I have one doubt: can I use NQC with other lego interfaces such as the 9751 kit, or does NQC only work with RCX? I need to know that becuase here in the University we still don`t have (...) (24 years ago, 11-Jan-02, to lugnet.robotics.rcx.nqc)
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| | Re: New MindStorms SDK
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|
Hi Shigeru, (...) You can generate the import library for MSVC with the Visual Studio's LIB command line utility. e.g.: LIB /DEF:TOWERAPI.LIB Hope this helps, Antonello (24 years ago, 11-Jan-02, to lugnet.robotics)
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| | Re: Mac version
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(...) If you are talking about Lejos, there has recently been a success report for Mac OS X. Replace gcc by cc in the Makefile and compile from source. If you succeed please post a diff with your modifications. Jürgen (24 years ago, 11-Jan-02, to lugnet.robotics.rcx.java)
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| | Mac version
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Subject speaks for itself. Is there a Mac port? (24 years ago, 11-Jan-02, to lugnet.robotics.rcx.java)
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| |
| | Anyone there?
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I am interested in creating a wireless comms for RCX. Is anyone interested? (24 years ago, 11-Jan-02, to lugnet.robotics.tele)
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| | USB Serail convertor woes with 2.5 on a Mac
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Hi, I have 2.5 installed on a iBook running OS9.2.2 with both a Belkin USB serial convertor and a Xircom convertor. The latter can download the firmware, but the former errors after only 4% download. I am using RCX 1.0 from the Team Challenge kit (...) (24 years ago, 11-Jan-02, to lugnet.robotics.rcx.robolab)
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| | Re: Configuring LegOS with USB tower under Win2K.
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Hi Aaron, Thanks for your quick reply. Thank you for the USB fix. I have also done as you suggested and altered the path under #NT - I forgot the drive letter should have been specified //x where x is the drive, C:, D: etc. I have now eliminated (...) (24 years ago, 10-Jan-02, to lugnet.robotics.rcx.legos)
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| | I-cybie walking robot dog - Hackable???
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Hi I gave my son an i-cybie robot dog for his birthday. Very impressive little robot. Has anyone done any hacking on these puppies (pun intended)? Here is one site I found (look towards the bottom of the page for I-Cybie): (URL) is pretty impressive (...) (24 years ago, 11-Jan-02, to lugnet.robotics.handyboard)
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| | Inertial guidance
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Has anyone tried to do inertial guidance with the RCX ? (24 years ago, 11-Jan-02, to lugnet.robotics)
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| | Using the Differential to drive straight.
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I've been playing with the following design to try to overcome the problems with getting the robot to drive straight while using an A B Differential drive train (ie left side wheels driven by motor A, right side by motor B) and to get consistent (...) (24 years ago, 11-Jan-02, to lugnet.robotics)
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| | Will TLC continue to support Scout?
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Does anyone know what TLC's plans are with respect to Scout? Why are they discontinuing the 9735 Robotics Discovery Set? Are they killing Scout? Will they continue to support it? I just bought one for my 7 year old last year and he loves it. He's (...) (24 years ago, 11-Jan-02, to lugnet.robotics.scout)
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| | Re: Lego competitions just like Robotica?
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If you are anywhere near Ann Arbor, Michigan you could come to my competitions. We have about 5 people who attempt the "challenge" on a bi-monthly basis. Our next challenge is scheduled to occur the first weekend in March. The actual challenge will (...) (24 years ago, 10-Jan-02, to lugnet.robotics)
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| | Re: Configuring LegOS with USB tower under Win2K.
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Thanks for your interest Dave. The source for the USB tower Win2k patch is located at anonymous ftp://134.29.51.4 I can also give you one hint to get you going on configuring legos for cygwin. The most problems I have had are with the (...) (24 years ago, 10-Jan-02, to lugnet.robotics.rcx.legos)
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| | Automatic train switching with RCX
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Dear all, we've built an automatic train switching mechanism using the RCX. It detects trains using reed contacts (cheap devices sensitive to magnets) and switches two points so that the train stops and another one departs instead. We've tried to (...) (24 years ago, 10-Jan-02, to lugnet.robotics, lugnet.robotics.rcx, lugnet.trains)
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| | Re: Measuring robot turn angle
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(...) Another option would be to connect a single rotation sensor directly to the motor that turns your robot. (you may wish to gear it down) You could not detect the distance forward or backward (from the other motor), but you could calculate the (...) (24 years ago, 10-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: site update
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(...) What's the URL? 8?/ ROSCO (24 years ago, 10-Jan-02, to lugnet.robotics, lugnet.technic)
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| | Re: Measuring robot turn angle
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(...) I have done this, although not with a differential. My solution used a rotation sensor on each axel, and good navigation can be done with that. Since you can guarantee that both axels turn the same amount, a single rotation sensor should be (...) (24 years ago, 10-Jan-02, to lugnet.robotics.rcx.legos)
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| | site update
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For all of you who have not been to the site for a while because it's kinda boring. there are a few updates that you may want to look at. torsen differential added, credit goes to the person who designed it (let me know so i can give the proper (...) (24 years ago, 10-Jan-02, to lugnet.robotics, lugnet.technic)
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| | Re: Measuring robot turn angle
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(...) Robert, I have been playing with this problem a bit. Another approach is to power each tread with a separate motor, use a differential assembly to add the shaft rotation from both sides and use a rotation sensor to 'control' to a zero (...) (24 years ago, 10-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: Lego competitions just like Robotica?
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hello ! I live in dunkerque (FRANCE) and we want to organize a robotic competition. Like 36 hours in challenge. Nobody know the challenge before the competition. But we don't know if that can be possible cause we don't know if we have time and (...) (24 years ago, 10-Jan-02, to lugnet.robotics)
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| | Re: Lego competitions just like Robotica?
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(...) I'm not sure what "Robotica" is, but if you're interested in building your own LEGO robots and having them compete against those built by others, there's several such competitions around. The one closest to where I live is in Seattle. I (...) (24 years ago, 10-Jan-02, to lugnet.robotics)
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| | Lego competitions just like Robotica?
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I am a huge fan of Robotica and have built many Lego robots and vehicles with different drive mechanisms. Does anyone know of any Lego competitions where I can test out my designs against other Lego opponents? (24 years ago, 10-Jan-02, to lugnet.robotics)
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| | Re: USB, Windows, legOS
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Hi Don and Aaron, Any chance of sending me the patches for the USB Tower to work under Cygwin. I may be able to help get the patches working. I have some experience with Win95/98/2K. Dave W. (...) (24 years ago, 9-Jan-02, to lugnet.robotics.rcx.legos)
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| | Measuring robot turn angle
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The drive system in my robot is an adder-subtractor (see (URL) which uses two differentials in order to get equalized forward/reverse drive while allowing turning and pivoting (turning in place). For navigational purposes, the robot should be able (...) (24 years ago, 9-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: PIR sensor available
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hi Pete, Nice work , it looks good (especially in the far IR) ! I hope your business is running well. From your previous work I know you also put the schematics on your site. As someone who wants to hold a solder iron sometimes, I'm very interested. (...) (24 years ago, 9-Jan-02, to lugnet.robotics)
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| | Re: USB Tower for Win2K and LegOS
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Hi Rainer, Thank you for replying so quickly. I now have the latest SDK which includes the Ghost API + USB support. I am wondering if it may be possible to compile LegOS with Cygwin and pick up the compiled file with ScriptEd from the SDK and (...) (24 years ago, 9-Jan-02, to lugnet.robotics)
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