 | | RE: cool robot
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Wow, that's very cool! It's hard to get a sense of scale from the video -- how tall is the robot? What technology are you using for the balancing? I would think this to be quite difficult with the standard NXT set, but maybe possible with some (...) (18 years ago, 28-Feb-07, to lugnet.robotics)
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| | Re: Power Functions Element Pics (inc Plugs)
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I searched for the dinosaur set on Brickshelf and got a fuzzy pic of the box. Apart from the elements you mention there appears to be a white box which could be a sound system. Can you explain what it is and how it ties into all of this? linmix (...) (18 years ago, 28-Feb-07, to lugnet.robotics)
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| | Re: Power Functions Element Pics (inc Plugs)
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(...) I can't say that I am a fan of the "permanent wires" or the connector end itself, but perhaps I just don't like change. I wonder if there will be extension cables for sale? Actually the more I think about it, the more I forsee the attached (...) (18 years ago, 28-Feb-07, to lugnet.technic, lugnet.robotics)
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| | BrickFest™ 2007 - NXT-only Sumo competition
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BrickFest™ 2007 LEGO Mindstorms Robot Competition NXT-only Sumo ===...=== The Challenge: Build a Sumo robot using only the parts in one standard NXT set. (Only set #8527; sorry, not the education version, set #9797.) The Rules: This event is a (...) (18 years ago, 28-Feb-07, to lugnet.events.brickfest, lugnet.announce, lugnet.events, lugnet.fun.community, lugnet.robotics, FTX) !!
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| | Re: BrickFest™ PDX 2007 - Robotic Easter Egg Hunt
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(...) There have been inquiries as to the number of eggs that will be used. The answer is that "one bag" of eggs will be scattered around. The bag pictured is a 9.2-ounce bag, but so far this year I've only been able to find 11-ounce bags. The (...) (18 years ago, 28-Feb-07, to lugnet.events.brickfest, lugnet.robotics, FTX)
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| | cool robot
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it's not lego, but here's a robot I'm working on: (URL) I think a balancing biped can be built with NXT. It's an open challenge! -dbm (18 years ago, 27-Feb-07, to lugnet.robotics)
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| | Re: Power Functions Element Pics (inc Plugs)
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(...) OK, here's a few while you wait :-) Basic system as used in the creator dinosaur set 4958 (inc handset & battery box): (URL) IR receiver: (URL) motor (inc plug top): (URL) motor (inc stud recesses on bottom and plug bottom): (URL) (18 years ago, 27-Feb-07, to lugnet.technic, lugnet.robotics)
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| | Re: FindLight
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(...) Use FastTimer instead of Timer for 10ms resolution. I should have remembered that last night. John Hansen (18 years ago, 27-Feb-07, to lugnet.robotics)
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| | Re: FindLight
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Thank you for your well commented adaptation. I'm still experiencing the same problem even though the values for the different variables as shown by 'watch the brick' check out. The problem is in a different place. I wrongly assumed wait 'ticks' and (...) (18 years ago, 26-Feb-07, to lugnet.robotics)
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| | Re: FindLight
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(...) I accidentally put a semicolon on the #define line above which is wrong. The program I posted will not compile unless the semicolon is removed. My apologies. It's what I get for posting late at night. John Hansen (18 years ago, 26-Feb-07, to lugnet.robotics)
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| | Re: FindLight
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(...) //findlight.nqc #define A OUT_A #define C OUT_C int maxlight; int light; int time = 0; #define TURNTIME 500; //change to accomodate 1 turn #define ROTATE_CLOCKWISE OnFwd(A); OnRev(C); #define ROTATE_COUNTERCLOCKWISE OnFwd(C); OnRev(A); task (...) (18 years ago, 26-Feb-07, to lugnet.robotics)
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| | Re: FindLight
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Thanks. I thought setting maxlight before the 'if' statement would be enough, but moving it closer to the front (before the 'while' statement') did the trick. The bit after the while loop still gives me pain though. I've changed it a bit to be able (...) (18 years ago, 25-Feb-07, to lugnet.robotics)
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| | Re: FindLight
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(...) Looks like you're setting maxlight = SENSOR_2, then testing if (SENSOR_2 > maxlight), which will rarely (if ever) be true, because the value of SENSOR_2 is unlikely to change in such a short time. I think the first maxlight = SENSOR_2 (...) (18 years ago, 25-Feb-07, to lugnet.robotics)
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| | Re: FindLight
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Thanks for the reply. I see I overlooked something significant there. Going over it all again I think I don't need 'light' Also, the parse errors are due to my omitting the ; at the end of each statement I've also discovered that I should put some (...) (18 years ago, 25-Feb-07, to lugnet.robotics)
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| | Re: Power Functions Element Pics (inc Plugs)
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(...) I'm guessing there's a video. If so, I would recommend putting the video in a sub-folder by itself, as it is probably what is causing the delay. ROSCO (18 years ago, 25-Feb-07, to lugnet.technic, lugnet.robotics)
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| | Re: FindLight
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Please try some semicolons on your lines! Chris (...) //findlight.nqc #define A OUT_A #define C OUT_C int light, maxlight, time; int turntime = 500; //change to accomodate 1 turn task main() { SetSensor (SENSOR_2, SENSOR_LIGHT); ClearTimer (0); (...) (18 years ago, 25-Feb-07, to lugnet.robotics)
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| | Re: FindLight
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(...) I don't see where "light" ever gets set. JB (18 years ago, 25-Feb-07, to lugnet.robotics)
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| | Re: Power Functions Element Pics (inc Plugs)
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(...) hey mark, thank you for posting all of this info. i look forward to seeing the gallery but it seems to be taking forever to be moderated. is there a chance you could post some deep links? ondrew (18 years ago, 25-Feb-07, to lugnet.technic, lugnet.robotics)
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| | FindLight
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I'm trying to write a simple program to make a roverbot-like robot seek for light. My basic idea is to use a timer ( Timer(0) ) to keep track of how long the robot has been turning and a variable (time) to remember the moment when the brightest (...) (18 years ago, 25-Feb-07, to lugnet.robotics)
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| | RE: Robolab-Optimizer
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Why not have them do the following experiment? Use the new 100 speed level. Connect a rotation sensor. Loop for power levels in step of 5 from 5 to 100 Wait a little bit for motors to get to steady state speed. Reset rotation count Wait 1 second (...) (18 years ago, 25-Feb-07, to lugnet.robotics)
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