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 | | Re: Polling sensor values with wait_event
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| Thomas, I had a thought about this situation. You could write a function that sets a flag when the event is triggered, do nothing otherwise. You could call this function from within each of the tasks you write (at a somewhat high frequency ... say (...) (22 years ago, 28-Nov-02, to lugnet.robotics.rcx.legos)
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| | Polling sensor values with wait_event
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| Hello all, Is it true that the wakeup function is only checked once every timeslice and only for the process that has the highest priority and is at the front of the priority chain? For example, a process k is waiting on the wakeup function y wich (...) (22 years ago, 26-Nov-02, to lugnet.robotics.rcx.legos)
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| | Re: Polling sensor values with wait_event
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| Thomas, You are mostly correct. However, keep in mind that tasks with the same priority get checked in turn. The first task in the priority chain does not get undo precedence over the others in the same priority level. Example: Tasks A, B and C all (...) (22 years ago, 27-Nov-02, to lugnet.robotics.rcx.legos)
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| | First LEGO League competition in Cincinnati Ohio
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| I just got back from the First LEGO League competition in Cincinnati Ohio. I got a sweet volunteer job there. I got to be the helper for one half of the practice table. The table is divided in half and each team gets one half. I got to time them (5 (...) (22 years ago, 22-Nov-02, to lugnet.robotics)
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| | RE: Newbie has an idea - Nascar style racing?
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| (...) Inkjet plotters are should be pretty common in mechanical enginnering firms these days. Colleges may also have them. The billboard and sign industry uses huge paint plotters, but those are much more expensive to run than inkjet plotters (...) (22 years ago, 22-Nov-02, to lugnet.robotics)
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| | Re: Newbie has an idea - Nascar style racing?
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| (...) why? Is line following bad? It will be IMPOSSIBLE to build an autonomus NASCAR style car from Mindstorms. You just can't get enough information about the track & your position into the RCX. (...) With the gray-scale scheme Gus suggested, a (...) (22 years ago, 22-Nov-02, to lugnet.robotics)
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(score: 0.842)
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| | Re: Newbie has an idea - Nascar style racing?
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| (...) does not refill their own cartridges. Paper won't (...) Partially why it is expensive. The fact that it is easily damaged makes maintennance that much more expensive. Not to mention constant replacing of paper track would eat up valuable event (...) (22 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Line following algorithms
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| (...) Well I suppose this statement applies to me since I have organized an event that limits the robots to a single light sensor. However, in my defense, I must say that the intent behind the rule was to make the game more fair for all competitors. (...) (22 years ago, 2-Dec-02, to lugnet.robotics)
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(score: 0.842)
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| | Re: Line following algorithms
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| (...) Mission well nigh impossible, I think. (...) One light ensor is ok for starters. It's not difficult to get an additional light sensor. Most of us think the RIS should have come with 2 light sensors in the first place. (...) Have a look at some (...) (22 years ago, 28-Nov-02, to lugnet.robotics)
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(score: 0.842)
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| | Re: Line following algorithms
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| (...) I don't think there is really a good source for this information, yet. I'm planning on making a web page with information about line following, including event locations, in the near future. One place to look is the regular robot clubs. Like: (...) (22 years ago, 3-Dec-02, to lugnet.robotics)
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| | Re: Line following algorithms
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| From: Gary Mullen <garym@the-mullens.net> (...) It's a little of both. (prize & prestige) When you go to a contest sponsored by a robot club, they often give out "real robot" prizes. (stuff WE can't usually use) But at the last line following event (...) (22 years ago, 3-Dec-02, to lugnet.robotics)
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| | LNPD problem
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| Hi there, I still don't manage to send any packages from the rcx to the PC. I attached the client and the "receiver program" and here is a fragment of the lnpd log: 148032:Client > connection 1 from host 127.0.0.1, port 33485 148039:Logical > (...) (22 years ago, 3-Dec-02, to lugnet.robotics.rcx)
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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 (...) (22 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 (...) (22 years ago, 17-Dec-02, to lugnet.robotics)
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| | Communication between RCX's with BrickOS
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| Hello Everyone, I have been working on a dual RCX robot for quite some time now, and have just recently upgraded to BrickOS. At first I attempted to used the LNP communication functions, such as lnp_adressing_write. I am not an expert, and I got (...) (22 years ago, 2-Jan-03, to lugnet.robotics.rcx.legos)
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