 | | Re: Autonomous RCX Racing - formerly Nascar style racing
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(...) Random thoughts: The way I read it, you can only notify of position down to 9th place. I guess you could treat 9th place as "9th or worse place". Also, you can only send a count of up to 9 laps, limiting either the race length or the error (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | RE: Autonomous RCX Racing - formerly Nascar style racing
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<SNIP> (...) Perhaps 2 bits for race status, 3 bits for car #, and 3 bits for position. That gives 8 cars and 8 positions plus allows the ability to tell a car "finished", "keep racing", or "caution": MSB 7 6 5 4 3 2 1 0 LSB s s c c c p p p Message (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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anyone?? (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | linker segmentation fault
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I'm running Red Hat Linux 8.0 (gcc 3.2 and binutils 2.13). Whe I try to compile the demos that come with brickOS 0.2.6.09, using binutils 2.12.91 for the cross-linker and gcc 3.2.1 as cross-compiler, the linker crashes. Here is the output of the (...) (23 years ago, 17-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Autonomous RCX Racing - formerly Nascar style racing
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(...) Here is a link to Gus Janson's SteerBot ((URL) which I think you will find has great maneuverability as well as a tight turning radius (~6"). I have replicated it several times in the past 2 months for my group's line following event. After (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Autonomous RCX Racing - formerly Nascar style racing
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(...) What about 5?! (...) What message would the 11th place car get? Right off the bat, I'd say 23 cars is too many. It won't leave any room to move around, so they'll spend all their time bumping each other. I'd guess 4 or 6 would be about right. (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Lego® 9V Technic Motors compared characteristics
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(...) Someday I'm going to update my links page and you're going to be in it! Best regards, /Tobbe (URL) SPAM when e-mailing) (23 years ago, 17-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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(...) The only difference is that the 1.0 brick has an external power connector so you can save batteries while testing by plugging in an external mains adaptor. In all other respects, the three bricks are identical. (...) Yes. My 1.0 brick runs 2.0 (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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To add to Stephane question: Are there any hardware differences between between the 2.0, 1.5, and 1.0 versions of the RCX brick? Has anyone noticed any performance differences? Are all programmable with the included RIS 2.0 software? Roy Nelson (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Autonomous RCX Racing - formerly Nascar style racing
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After some intense fiddeling around I have created a couple working vehicles or autonimous racers based on the discussions a previous post. The vehicles handle like traditional race cars without the ackerman style steering by having a motor powering (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Vision Command
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Hello, For anyone interested... I have two spare Vision Command Constructopedias and CD's (English). If anyone is willing to part with the software/documentation from the Steven Spielberg Movie Studio set, please email me. Also, I'd like to expand (...) (23 years ago, 16-Dec-02, to lugnet.robotics)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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(...) Dunno - but the overriding thing that should determine which one you'd want is that the 1.5 RIS comes with a SERIAL PORT (RS-232) interface to the infra-red tower - the 2.0 set has a more modern USB interface. The USB version is better - but (...) (23 years ago, 16-Dec-02, to lugnet.robotics)
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| | RE: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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The major differences between RIS 1.5 and 2.0 are the RIS software and the IR Tower. The software upgrade from RIS 1.5 to 2.0 is $19.99 (#3805) from LEGO's website. A USB IR Tower can be purchased from pldstore.com (W979783) for $29.00. There was no (...) (23 years ago, 16-Dec-02, to lugnet.robotics)
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| | Re: BrickOS Threading...
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(...) To tell you the truth, I'm not exactly sure how the BrickOS PWM works, but I do know the standard RCX PWM simply switches the motors between ON and FLOAT, which will not slow the motor down, when it switches from a high power, to a lower (...) (23 years ago, 16-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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(...) Almost identical... parts differences: RIS 2.0 has an USB infrared tower, RIS 1.5 a serial one. RIS 2.0 also has an "optic fiber" used to program Micro Scout. (...) No, but RIS 2.0 has instructions for 6 more constructions on CD. Philo (...) (23 years ago, 16-Dec-02, to lugnet.robotics)
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| | Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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Currently debating in my head whether of these versions is the best to buy. I've checked the inventory with Peeron, all RIS kits appear more or less identical in their supply of parts. Does 1.5 come with ANYTHING that isn't included in 2.0 ? I would (...) (23 years ago, 16-Dec-02, to lugnet.robotics)
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| | Re: sys_time (long post)
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Only a suggestion, In any processor architecture (with or without disabling or recursive interrupts) when I need to read timers with more than 1 single instruction I do the following: Read the timer (both low and high value) until I get 2 times the (...) (23 years ago, 16-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Working motorized focus for Vision Command
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This may be a stupid question, but could the vision command be made to "autofocus" given special code? Timothy (...) (23 years ago, 15-Dec-02, to lugnet.robotics)
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| | Re: Lego® 9V Technic Motors compared characteristics
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Nice page, Philippe! Thanks for all the work. Mark "Philippe Hurbain" <philohome@free.fr> wrote in message news:H765Fr.ME9@lugnet.com... (...) (23 years ago, 15-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: Lego® 9V Technic Motors compared characteristics
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Just corrected a cut and paste error in speed/torque table of 43362, and (...) (23 years ago, 15-Dec-02, to lugnet.robotics, lugnet.technic)
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