 | | Re: Power to RCX
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"Matthias Jetleb" <Jetleb@Netcom.ca> wrote in message news:3c5b6892.134862...net.com... [snip] (...) Check out this timely post: (URL) this is indeed the same part, then it looks like 12V is the max. (Figure 1 of the datasheet is a little confusing, (...) (24 years ago, 2-Feb-02, to lugnet.robotics.rcx)
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| | Re: Power to RCX
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I investigated this issue a while back an have taken apart all four of my RCX's (1.0 w. adapter, 1.0 w/o adapter, and 2 2.0's from an RIS1.5 and and RIS2.0). They all have internal voltage regulators. I've written the number down somewhere on this (...) (24 years ago, 2-Feb-02, to lugnet.robotics.rcx)
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| | Re: Question?
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The three main outputs are Pulse Width Modulated. These are generally used for motors, but work for lights as well. The three main "inputs" can use "active" sensors that require power and can therefore be considered as outputs in their own right (...) (24 years ago, 2-Feb-02, to lugnet.robotics)
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| | Re: Constructopedia replacement
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I bought an all German RIS2.0 at the Sears Clearance Center in Brampton a few weeks ago (how it ever landed in Canada, I'll never know). Anyway, I asked Lego for replacement manuals an received them within a week, no questions (or proof) asked. (...) (24 years ago, 2-Feb-02, to lugnet.robotics)
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| | Re: "Servo" Driver for NQC
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(...) Yes, but only one of 8 settings (why not all 256??? I don't understand why they limited this). Sometimes only 8 settings doesn't give you enough finesse. Matthias Jetleb (24 years ago, 2-Feb-02, to lugnet.robotics)
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| | Re: Power to RCX
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(...) Oops, me bad, I meant 7809. BTW, here are some links to online data sheets for that type of regulator: (URL) (24 years ago, 2-Feb-02, to lugnet.robotics.rcx)
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| | Re: Power to RCX
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Hi Trevyn, From the photo you posted, it appears that you have the input and output pins of the 7805 reversed. According to the datasheet, this will probably fry the regulator. I'd recommend getting a new part before continuing, so as not to risk (...) (24 years ago, 2-Feb-02, to lugnet.robotics.rcx)
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| | Re: IP on Mindstorms
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I just saw Styx-in-a-brick at Linuxworld. (Styx is the distributed file system component of Inferno and fits into 17k.) The RCX was built into a clock (time display device) and was keeping in sync with the host machine via infrared. On the host (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Re: true tcp/ip on the RCX
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Cool stuff, congrats on the Slashdot recognition. Hope the "Slashdot Effect" didn't totally cripple your server. Wondering if you or Olaf could make the LegOS code available for all to see, just wondering how it was all done for educational purposes (...) (24 years ago, 1-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: true tcp/ip on the RCX
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(...) [...] (...) A few days ago, Olaf sent me his legOS TCP/IP code which I have been running a few days, so I probably have the world's second TCP/IP-enabled Lego brick in my office :-) ! I was also able to squeeze in a simple web server, a few (...) (24 years ago, 1-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: Robotic DAT Tape Loader
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I already fixed it. go to (URL) fixed the site without itools. But the images are still big. I will fix them tonight. Sorry for the problems. Stupid iTools. Bad Apple no cookie. Shawn (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Re: Robotic DAT Tape Loader
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(...) No it's not cool. The images won't load at all. It doesn't have anything to do with waiting. When I click the link it tries to do something with JavaScript which doesn't work. Can you fix it so the links just go straight to the images and (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Re: Question?
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What do you mean? Motor speed is controlled through Pulse Width Modulation, if that helps... (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Re: Micromouse Robotic Competition, Could RCX do this?
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(...) Taking a look at the rules, there doesn't seem to be any penalty for touching the walls, so I dont see why you couldn't use a single RXC with 2 motors and 3 (or 4) touch sensors: left, front, right (back). These can be multiplexed onto a (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Motor Drivers for higher voltages
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I was looking for the data sheet for the Melexis 10402 motor driver IC, the one in the RCX. It is no longer on their website. I eventually found it, and have posted it here: (URL) want to drive 24V motors and use the RCX to control them. Ideally I (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Re: Robotic DAT Tape Loader
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(...) Store the CDs on edge, and then use something that can fit inside the central hole, but expand/contract to allow rotation and drop. (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Re: Robotic DAT Tape Loader
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In lugnet.robotics, Thorkild Stray <thorkild@ifi.uio.no> writes: [snip] (...) The little suction cup thingys that I seem to recall from 6180 ? Ray (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Question?
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Hi every one: I was wondering, What type of output is generated by the rcx? Thanks a lot Alexis Rojas National Robotics Engineering Consortium The Robotics Institute Carnegie Mellon University Ten 40 th Street Pittsburgh, PA 15201 Phone: (412) (...) (24 years ago, 31-Jan-02, to lugnet.robotics)
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| | Re: Micromouse Robotic Competition, Could RCX do this?
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hey, Sounds kewl... ...I would probably try and implement it with a 2 RCX, 1 Scout system. Scout and RCX for sensor and motor controls, RCX for Datalogging and adding to the learning of the robot. Should (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Southern Ohio Competitions ?
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Are there any Lego Robotics competitions in the Cincinnati OH/Northern Kentucky (USA) area? Thanks, Bill (24 years ago, 31-Jan-02, to lugnet.robotics)
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| | Micromouse Robotic Competition, Could RCX do this?
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I recently stumbled across a reference to the Micromouse Robotics competition and thought others in the group might find it interesting. It looks like something that would be [barely] achieveable with a Mindstorms implementation. APEC [Applied Power (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Re: Robotic DAT Tape Loader
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(...) That's the iTools automatic photo album feature...it's quite cool, but it might take a minute for the large images to load. Even on my 800k connection it takes a bit for the images to load. I like the idea of an auto CD loader though...I've (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | JAVA for 9751 Lego interface - SOS
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hello all, Q. Does anyone know of a JAVA version for the 9751 controller - i would be so happy! I am currently using the older version of the Lego Dacta Control interface - 9751 (interface 70909 - stamped underneath unit itself - the one with 8 (...) (24 years ago, 30-Jan-02, to lugnet.robotics)
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| | Re: Robotic DAT Tape Loader
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(...) Same here, but I got the pictures if I went directly to for example: (URL) If I could only find a good solution for picking up CDs, I could use some of the ideas from this to finish my "mp3-all-of-my-cd-co...on"-robot. (24 years ago, 30-Jan-02, to lugnet.robotics)
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| | Re: Firmware RIS2.0 Linux
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, 1). If the firmware file is located in a WinZip archive, you can just use the "unzip" command under Linux. You can also mount a Windows CD-Rom in Linux and look browse it like a normal filesystem. (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | bigger bots
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hi all, i am new to this newsgroup but have been monitoring lugnet posts for a while now. i was just wondering if anybody has ever used the rcx as a main brain to control bigger non-lego motors using opto-isolators and separate battery/power supply? (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Re: Power to RCX
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Most "wall wart" transformers give about 3-5 volts above what is marked on them. I would not use one of these directly. However, I am currently working on using a 7809 voltage regulator. If you don't know, a voltage regulator is a small electronic (...) (24 years ago, 1-Feb-02, to lugnet.robotics.rcx)
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| | Re: "Servo" Driver for NQC
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"Dick Swan" <dickswan@sbcglobal.net> wrote in message news:GqsAv4.GL1@lugnet.com... (...) <snip> Dick, let me first say thank you for the post. I've implemented some of your suggestions and my robot has gone from unuseable to operating as I had (...) (24 years ago, 1-Feb-02, to lugnet.robotics)
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| | Power to RCX
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Hi all, I just got my new RIS Ver.#2, and I am far from being an electronic expert. I am wondering if a proper wall tranformer with an adapter inside the RCX to connect to the battery terminals would work for stationary application. Of course, I do (...) (24 years ago, 1-Feb-02, to lugnet.robotics.rcx)
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| | "Local Positioning System" for lego-vehicles with mice
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Hello NG, i try to develop something like a local position system with a optical RF mouse (or other mouse-devices). If someone want to join or help for this little project please mail me. A very first result you can see at (URL) (24 years ago, 1-Feb-02, to lugnet.robotics.rcx.legos)
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| | Premature announcement of Interactive C 4.0
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Actually, Fred's announcement is a little premature, sorry. Several important things to know if you do choose to download the current version of IC: 1) The libraries are tuned for the Botball contest (www.botball.org) and by default include a (...) (24 years ago, 29-Jan-02, to lugnet.robotics.handyboard)
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| | Re: Downloading Firmware
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(...) I have an E-machine that uses Windows 98. Mark (24 years ago, 31-Jan-02, to lugnet.robotics.rcx)
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| | Firmware RIS2.0 Linux
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I recently bought RIS 2.0 with the idea to use NQC on my Linux computer. Yesterday I tried to locate the firmware from the CD-ROM that comes with the box, but I could not find the firmxxx.lgo file. Can I extract the firmware from the CD-ROM under (...) (24 years ago, 31-Jan-02, to lugnet.robotics)
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| | Re: Downloading Firmware
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(...) Maybe, but I'd rather incriminate motherboard/OS/USB drivers. What do you use ? Philo www.philohome.com (24 years ago, 31-Jan-02, to lugnet.robotics.rcx)
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| | Integer-based arctangent2 function for anyone interested
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After scouring the internet for several days and even utilizing Jack Crenshaw's wonderful book "Math Toolkit for Real-time Programming", I was unable to find a good, general iatan2(y,x) function. Note that this is the atan function that takes as (...) (24 years ago, 31-Jan-02, to lugnet.robotics.rcx.legos)
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| | Downloading Firmware
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I am trying to download the firmware to the ris 1.0 & 2.0 using the usb tower but it won't finish, the rcx only counts to 200-300 & is different all the time. then it says the tower is disconnected, when i didn't even touch it. BUT the serial tower (...) (24 years ago, 31-Jan-02, to lugnet.robotics.rcx)
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| | Constructopedia replacement
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Hi, I have a RIS 2.0 and I got my Constructopedia book damaged. I know I can get replacements from Lego. I sent them a message but I would like to know if anyone has had any experience with that. I mean, will they send it ? If not, could anyone tell (...) (24 years ago, 31-Jan-02, to lugnet.robotics)
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| | Errors compiling egcs
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Hi, I've just downloaded and attempted to install the binutils, egcs, and LegOs on my computer as per the instructions at (URL) only difference between these instructions and what I have done is the path to where the software is to be installed. (...) (24 years ago, 31-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: "Servo" Driver for NQC
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<snip> (...) <snip> (...) Really good post! Just a loose end: If you press the 'stop' button on the RCX while a motor is running the motor stops in the 'brake' condition. If you connect a spare motor to a gray battery box with the switch in a (...) (24 years ago, 31-Jan-02, to lugnet.robotics)
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| | Re: which Linux distro?
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(...) Good Idea ! I had no problem using legOS when using a RedHat 7.1, Mandrake8 or a Conectiva 6.0, As far as I remember, there is a Debian package available for legOS. So... no matter which distribution you'll use, it will be far better than (...) (24 years ago, 31-Jan-02, to lugnet.robotics.rcx.legos)
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