 | | Re: new xy-plotter
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(...) Page is updated : (URL) (18 years ago, 19-May-07, to lugnet.robotics)
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| | Re: circular pointer
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(...) There's something about that too in the same book. If I have some time this weekend I'll try to figure that one out. (thanks for the pointer, I'd forgotten about it) linmix (18 years ago, 17-May-07, to lugnet.robotics)
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| | Re: circular pointer
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(...) Another way to accomplish the same result with less code and less memory is to use exponential smoothing. (see Wikipedia) The method uses coefficients between 0 and 1, but if you want to use integers you can always use the integer numerator (...) (18 years ago, 16-May-07, to lugnet.robotics)
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| | Re: circular pointer
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(...) I should have written: 'array' (...) OK, undefined is not the same as zero, that makes sense (in a way). I looked up how to initialise an array and according to Dave Baum's NQC Guide "The initial values for an array's elements cannot be (...) (18 years ago, 14-May-07, to lugnet.robotics)
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| | Re: circular pointer
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In lugnet.robotics, linmix <linmix@gmail.com> wrote: [snip] (...) [snip] I would say defining SIZE changes the size of the array and thus the period of the moving average. I'm not sure how you mean "macro" in this context. [snip] (...) Yes, both (...) (18 years ago, 13-May-07, to lugnet.robotics)
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| | Re: circular pointer
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I've inserted some comments, not all are questions, some are simply 'thinking aloud'. (...) So by defining SIZE here I can easily change the size of the macro without having to alter anything else in the code. Nice! (...) Right you are, I should (...) (18 years ago, 13-May-07, to lugnet.robotics)
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| | Re: circular pointer
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I've added my comments to the code you posted (they start with **). I've also added some indenting.: #define SIZE 3 int v[SIZE],i,sum,ave; // initialize the array and some other variables sum = 0; for (i=0;i<SIZE-1;i++) { //I think this means set (...) (18 years ago, 13-May-07, to lugnet.robotics)
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| | Re: circular pointer
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(...) The line above is the line that cycles the array - each time through the loop it increments i and resets it to zero if it's >= SIZE (% is modulus operator). But I would agree with you about the v[i]=0 line - seems to me it would make the (...) (18 years ago, 12-May-07, to lugnet.robotics)
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| | Re: new xy-plotter
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(...) Page is updated with the first picture. Note that there is no sensorial control over the motor's position: (URL) (18 years ago, 12-May-07, to lugnet.robotics)
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| | circular pointer
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Some time ago some of you offered to help out if I (and I suppose anyone else) had any questions about programming.... well, here goes I'm reading "Building Robots with Lego Mindstorms" and in Chapter 12, there is some code to create a circular (...) (18 years ago, 12-May-07, to lugnet.robotics)
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| | Re: Zamor Spheres
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(...) "regulation" (...) out" into (...) We'd like to see how soccer balls would run through our modules. I'm guessing that some would take the smaller balls just fine and could slip right into a regulation GBC, but others would find that their (...) (18 years ago, 11-May-07, to lugnet.robotics)
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| | Re: Zamor Spheres
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(...) This is indeed the main problem. As we originally defined a GBC it used soccer balls (at the time, Zamors hadn't yet even come out), so most GBC-standard modules not only use but take advantage of the fact that a LEGO soccer ball fits very (...) (18 years ago, 11-May-07, to lugnet.robotics)
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| | Re: Zamor Spheres
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<<but I gather that means they may not work in a ball pump e.g.>> I chose to use Zamor spheres (because of their availability) for our GBC in my small robotics/engineering class. The kids have made ball pumps, Archimede's screws, stair lifts, chain (...) (18 years ago, 11-May-07, to lugnet.robotics)
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| | Re: Robo Quad - Stage Seven
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(...) Thanks. When I make one for the head motion it should be pretty cool. The action of the left/right and up/down is pretty quick. - Eric Sophie (18 years ago, 10-May-07, to lugnet.robotics, lugnet.technic)
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| | Re: Robo Quad - Stage Seven
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(...) Thank you, it is just taking a long time to build. I don't want to build it the wrong way. So I choose carefully the steps involved. Plus, it is tough going on my fingers. (...) Hard to say. All the joints are very strong. The motors provide (...) (18 years ago, 10-May-07, to lugnet.robotics, lugnet.technic, FTX)
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| | Re: Robo Quad - Stage Seven
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(...) Very impressive. The complexity of this robot is astounding. It looks very heavy. Will there be enough power for the weight? I am not doubting your work but it is a question that may come to some when they see how many parts are involved in (...) (18 years ago, 10-May-07, to lugnet.robotics, lugnet.technic, FTX)
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| | Re: Robo Quad - Stage Seven
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Coming along nicely Eric. Can't wait to see video of this thing in action. Cheers, Nathan (18 years ago, 9-May-07, to lugnet.robotics, lugnet.technic, FTX)
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| | Robo Quad - Stage Seven
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(URL) Robo Quad - Stage One notes> (URL) Robo Quad - Stage Two and Three notes> (URL) Robo Quad - Stage Four and Five notes> (URL) Robo Quad - Stage Six notes> Robo Quad - Stage Seven Completed Robo Quad - Stage Eight Work in progress (URL) Robo (...) (18 years ago, 9-May-07, to lugnet.announce.moc, lugnet.robotics, lugnet.technic, lugnet.build.mecha, FTX)
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| | Re: Control Lab & NQC
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(...) someone still has an information page up. (18 years ago, 8-May-07, to lugnet.robotics)
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| | Re: Control Lab & NQC
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(...) linmix, if you can program in NQC, you can use C. It's pretty much the same language. You'll just have to learn how to use the serial port, it's not that hard. Get a book on C programming from your local library or bookstore. Get a little (...) (18 years ago, 7-May-07, to lugnet.robotics)
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