 | | Re: Power Functions infra-red RC protocol released!
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(...) rats! (...) Thanks for the heads up, John Looks like I really have to start brushing up on my NXT 'bot building now. Dave K (17 years ago, 4-Feb-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Functions infra-red RC protocol released!
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(...) Dick Swan's replacement RCX firmware also does not support directly manipulating the IR led and it doesn't support microsecond timing control. Both of these features would be required in order to send the IR messages to a Power Function or R/C (...) (17 years ago, 4-Feb-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Functions infra-red RC protocol released!
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In lugnet.general, Jason J Railton wrote: <snip> (...) I'm runnign Dick Swan's alternate firmware that he sent me a while back. Dave K (17 years ago, 4-Feb-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Functions infra-red RC protocol released!
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(...) I doubt that's possible - a bytecode program just can't run fast enough to do the timing for the IR commands, on either brick. The NXT can only manage it because it sends them over a slow comms link to a HiTechnic IRLink sensor, then that (...) (17 years ago, 3-Feb-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Functions infra-red RC protocol released!
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(...) <snip> Nicely done John! Is there a tentative timeframe when NQC for the RCX will be updated to support IR to the LEGO powerfunctions? Dave K (18 years ago, 2-Feb-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Functions infra-red RC protocol released!
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(...) In collaboration with Jason Railton I have modified/extended the NBC and NXC API functions for the HiTechnic iRLink device in support of the newly documented Power Function modes as well as the R/C Train IR protocol. I uploaded a new (...) (18 years ago, 1-Feb-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics) !
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| | Re: [Q] LEGO NXT Book Recommendation
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David, Zitat von David C Matthews <lego-robotics@crynwr.com>: (...) What does "standard for LEGO NXT" mean? There are a lot of NXT-related books out there already, and they deal with a variety of different topics (see for instance (URL) ). I guess (...) (18 years ago, 29-Jan-08, to lugnet.robotics)
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| | [Q] LEGO NXT Book Recommendation
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Greetings- What single book, if any, is considered the standard for LEGO NXT? -David (18 years ago, 29-Jan-08, to lugnet.robotics)
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| | New Power Functions Electronics Folder
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The new Power Functions Electronics folder in my Brickshelf: (URL) contains circuits and pictures of how to use electronics with your PF parts. So far there are PF lead mods, a light direction, latch and flash circuit, which can keep train lights on (...) (18 years ago, 29-Jan-08, to lugnet.technic, lugnet.trains, lugnet.general, lugnet.robotics, lugnet.loc.uk, lugnet.parts.mod)
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| | Re: Power Function control with RCX and BrickOS
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A new version of my Power Functins library and PWM remote are now available at: (URL) There was some code cleanup and fine tuning. The PWM remote program now goes from slowest to fasted speed. give it a try and thanks for all the feed back so far. (...) (18 years ago, 28-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Re: Power Functions infra-red RC protocol released!
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(...) Very good. Have you done experiments to map the power level settings to RPM? I am guessing that each of the 7 steps sets literally a power level (PWM width) and not a speed. Have you done experiments under load to see what happens to the speed (...) (18 years ago, 27-Jan-08, to lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Re: Power Function control with RCX and BrickOS
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(...) Could it be that the long range mode of IR is not set (I saw no reference to range setting in your source, and I don't know the default state). Despite the difference in carrier frequency, the RCX 1.0 and RCX2.0 are able to dialog albeit with (...) (18 years ago, 27-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Functions infra-red RC protocol released!
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(...) I just tried the new commands with a home-made NXT-controlled IR remote. I was able to get them to work without a problem. I verified the single-output PWM mode, which starts a motor at a given power level, in which it stays indefinitely (...) (18 years ago, 26-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Re: Power Function control with RCX and BrickOS
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(...) i have not really spent a lot of time trying to figure these modes out. i was more concerned with getting the PWM to work correctly. i'm going to spend more time testing this and will let you know. bob (18 years ago, 26-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Re: Power Function control with RCX and BrickOS
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(...) Glad it worked for you and thanks for the heads up on the RCX 2.0 problems. i don't have a 2.0 RCX to play with so i'm not sure if it is a timing issue that can be resolved or what. i was very excited the first time i got my RCX to talk to the (...) (18 years ago, 26-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Function control with RCX and BrickOS
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(...) Well this was just a quickly hacked out example program to show how to use the library function that i wrote. i realized at the time that the PWM started out at fastest and went to slowest but i had run out of steam and never really got back (...) (18 years ago, 26-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Re: Power Functions infra-red RC protocol released!
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(...) Absolutely excellent news! Downloaded and printing... (18 years ago, 26-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Re: Power Function control with RCX and BrickOS
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Thank you very much for that fine piece of software Bob! After reading your post I immediately run in my LEGO room to grab an RCX and the IR tower to test your software. Well, I had to find out that I had not enough batteries at home and thus had to (...) (18 years ago, 26-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Re: Power Functions infra-red RC protocol released!
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(...) I did this experiment a while ago, I just presumed everyone else has as well. The Short answer is NO. I could not get the new IR train to control the PF receivers either at full on, or with PWM. My IR train, and PF gear are 100% incompatible. (...) (18 years ago, 26-Jan-08, to lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Function control with RCX and BrickOS
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(...) Okay, thanks. I can get 'Single output Mode' to work now. 'Single pin Mode' may be working too, but I'm not sure what to expect from it. I would expect setting either C1 or C2 would set them to 9V and run a motor forwards or backwards. Setting (...) (18 years ago, 26-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Re: Power Functions infra-red RC protocol released!
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(...) I'd be very interested in that experiment (using a Hobby train RC on the PW Receiver) as well, but this does answer a number of questions for trains. For instance, tunnels and large layout out of line-of-sight on the RC should now be possible. (...) (18 years ago, 26-Jan-08, to lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Functions infra-red RC protocol released!
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(...) Either single pin modes allow to set each output to 1 (9V) or 0 (0V). (...) See the drive datasheet: (URL) can reach 1A peak, continuous value is lower (500-600mA) especially if both outputs are heavily loaded at the same time. Philo (18 years ago, 26-Jan-08, to lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Function control with RCX and BrickOS
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(...) Bob, I could not wait to get home from work to try this. I want to say thank you; your effort has saved me many countless hours. I loaded the Firmware, and the Program into a 1.0 RCX, and the brick worked flawlessly! On my 1.0 brick, I was (...) (18 years ago, 26-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics)
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| | Re: Power Function control with RCX and BrickOS
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(...) The toggle bit is checked in Single output mode (the documentation is not quite right for this mode) and in both single pin modes. each message is sent 5 times you need to toggle the toggle bit in every message sent. 0 1 0 1 0 1 0 1 etc. bob (18 years ago, 25-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Re: Power Functions infra-red RC protocol released!
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(...) This is great news indeed, thank you for posting. Has anyone tried the rc train remote on a power function reciver to see if it uses the single output pwm control signals? If not, hopefully the new RC train system will be compatible. It also (...) (18 years ago, 25-Jan-08, to lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Re: Power Function control with RCX and BrickOS
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(...) I don't have BrickOS, but I have been playing with the protocols in NBC. I got the twin-motor PWM mode to work in tests, and the original 'Combo direct'. But I can't get 'Single output' or either of the 'Single pin' modes to work. Have you had (...) (18 years ago, 25-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, FTX)
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| | Power Function control with RCX and BrickOS
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Now you can use your RCX to control LEGO Power Functions. That's right the RCX can act as a PF remote control but it can do something that the PF remote can't do yet. The RCX can do PWM with your PF reciever moduals. You do not need to install (...) (18 years ago, 25-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, lugnet.announce, FTX) !
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| | Power Functions infra-red RC protocol released!
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(2 URLs) The LEGO company just released a document detailing the complete protocol used by Power Functions RC receiver. I host the document on my (URL) Power Functions presentation page>. As you can see this opens up a new world of possibilities... (...) (18 years ago, 25-Jan-08, to lugnet.general, lugnet.technic, lugnet.trains, lugnet.robotics, lugnet.announce, FTX) !!
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| | Re: Creating cool MINDSTORMS NXT robots
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(...) Very cool! I look forward to seeing the book. I bet you can't wait until March. :) - David (18 years ago, 23-Jan-08, to lugnet.robotics)
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| | Re: Creating cool MINDSTORMS NXT robots
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Daniele, looks veery promising. :-) I've posted an according entry to THE NXT STEP blog. MP Zitat von Daniele Benedettelli <daniele_benedettell...erver.de>: (...) ---...--- This message was sent using IMP, the Internet Messaging Program. (18 years ago, 23-Jan-08, to lugnet.robotics)
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| | Creating cool MINDSTORMS NXT robots
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Hi all. I put a preview of the Table of Contents of my book here (URL) release is planned for March 2008. Check it out! (18 years ago, 23-Jan-08, to lugnet.robotics)
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| | Re: Cleaning Battery Terminals
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"Mark Riley" <markril@hotmail.com> wrote in message news:JuE4tI.t5@lugnet.com... (...) Your post could not have come at a better time. I found one of my RCX battery boxes full of corrosion the other day. White Vinegar and water does the trick. I (...) (18 years ago, 19-Jan-08, to lugnet.robotics)
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| | Re: End effector that can "feel"
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(...) I was comparing sensor reading to sensor reading and your point compares sensor reading to motor on/off condition, which is even better. I have never considered your idea of motor stall. That is probably because I am notorious for high gear (...) (18 years ago, 19-Jan-08, to lugnet.technic, lugnet.robotics)
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| | Re: End effector that can "feel"
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(...) Nice. And I agree, nice-looking. I once Bricklinked some of those same "rubber skirt" pieces for this, but never did get them in an effecter that I liked (I was trying smaller at the time). Now I use the flexible 1x2 studless beams that first (...) (18 years ago, 19-Jan-08, to lugnet.technic, lugnet.robotics)
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| | End effector that can "feel"
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Hey everyone. I have built a realistic grasping end effecter that can feel when something in is its grasp (without touch sensors). I have attached a deconstructed version that I use. (URL) principle is pretty simple. As the end effecter closes and (...) (18 years ago, 18-Jan-08, to lugnet.technic, lugnet.robotics)
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| | RSRA-2008
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I have been working with a Home Schooler named Ian, to create a Robotic Arm. The Arm was created over a 4 session building period. I call it the RSRA-2008. (URL) The Arm consists of primarily black Technic construction. It utilizes x3 9v geared (...) (18 years ago, 18-Jan-08, to lugnet.technic, lugnet.robotics, FTX)
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| | Re: rcx + power functions ?
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(...) hi Chris, thanks for the link I didn't knew the Manas but it seems to be both a sender and a receiver. The PowerFunctions probably should be simpler because it is only ONE WAY communication... Lejos, which is the operating system i use to (...) (18 years ago, 15-Jan-08, to lugnet.robotics)
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| | Re: Steve makes it to my favourite website...
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(...) Congratulations to Steve (it's actually a really nice write-up), but I want to know who the *other* four guys are in the picture ;). I keep blogging this stuff and then forget to echo it to LUGNET occasionally. LEGO just released a nice video (...) (18 years ago, 14-Jan-08, to lugnet.robotics)
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| | Steve makes it to my favourite website...
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(URL) GeekDad hero Steve Hassenplug, who is perhaps the best LEGO robotics builder in the world, writes in with a guest post, reporting on the Mindstorms contest he hosted at his house near Chicago last week..." Steve, can you be my hero? :) Read (...) (18 years ago, 14-Jan-08, to lugnet.robotics)
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| | Re: rcx + power functions ?
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(...) This is an excellent question, and one I would love to see addressed. A long while ago, John Barnes, and many, many other people worked on and posted to lugnet about how they figured out how to control the Mannas with an RCX. Rob Doucettenet (...) (18 years ago, 14-Jan-08, to lugnet.robotics)
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| | Re: rcx + power functions ?
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(...) Right. I don't believe any of the systems (RC Train, PF, RCX) can communicate with each other. But the IR link is pretty smart, and can talk with any of them. Steve (18 years ago, 14-Jan-08, to lugnet.robotics)
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| | Re: rcx + power functions ?
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I don't know about the RCX, but that would certainly be an interesting idea! As for compatibility, what you say is not entirely true. According to the information provided on the HiTechnic website about their IR-Link sensor: Control LEGO R/C trains (...) (18 years ago, 13-Jan-08, to lugnet.robotics)
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| | rcx + power functions ?
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hello, The new Lego Power Functions system use infrared remote control. Has anyone tried to use a RCX to control it? It would be very nice to use the RCX to comunicate with several power functions IR receivers! I have read that the Power Functions (...) (18 years ago, 13-Jan-08, to lugnet.robotics)
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| | Re: CAN you believe it... The next Robotics game.
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(...) This is where it gets "complicated" We actually talked about allowing custom sensors, and we more or less all agreed, Until I asked for a "ruling" on what is defined as a sensor. Would a very powerful "rare earth" magnet, glued to a beam (...) (18 years ago, 13-Jan-08, to lugnet.org.ca.rtltoronto, lugnet.robotics, lugnet.org.ca.obb)
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| | Re: CAN you believe it... The next Robotics game.
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Jeff, Thank you for organizing this game. I look forward to the web page updates, and a more finalizing of the rules as discussed at dinner. I like that we all seemed to agree on using Dave's wall's as the boundary; and I like that we all have to (...) (18 years ago, 13-Jan-08, to lugnet.org.ca.rtltoronto, lugnet.robotics, lugnet.org.ca.obb)
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| | Re: CAN you believe it... The next Robotics game.
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(...) (URL) the rules don't allow custom sensors? Too bad! Philo (18 years ago, 12-Jan-08, to lugnet.org.ca.rtltoronto, lugnet.robotics, lugnet.org.ca.obb)
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| | Re: CAN you believe it... The next Robotics game.
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In lugnet.org.ca.rtltoronto, Jeff Van Winden wrote: <snip> (...) and... OMG!!!! I can build big 'bots again!!!! Yippee!!!!!!! (cause we're not putting much of a size/weight restriction out there, are we? :) if we are, I vote for 18 inches x 18 (...) (18 years ago, 11-Jan-08, to lugnet.org.ca.rtltoronto, lugnet.robotics, lugnet.org.ca.obb)
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| | Re: CAN you believe it... The next Robotics game.
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In lugnet.org.ca.rtltoronto, Jeff Van Winden wrote: <snip> (...) I still ahve the playfield walls that can be easily set up anywhere on top of a smooth floor. that'd give us an 8x8 arena with white walls--if the cans are darker, a light sensor may (...) (18 years ago, 11-Jan-08, to lugnet.org.ca.rtltoronto, lugnet.robotics, lugnet.org.ca.obb)
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| | Re: CAN you believe it... The next Robotics game.
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(...) The Focus is finding the Heavist can, I think part of the challenge will be finding the cans in general... I imagined a 3 meter by 3 meter (just for you Iian) Practically 10' x 10' for you imperial lovers out there. With maybe 20 - 30 Cans. (...) (18 years ago, 11-Jan-08, to lugnet.org.ca.rtltoronto, lugnet.robotics, lugnet.org.ca.obb)
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| | Re: CAN you believe it... The next Robotics game.
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Nice one Jeff- Question on the "can density", which will of course depend on the playfield size and the # cans on the field.. If the focus on finding cans, or finding the largest cans? If the later, I might suggest wrapping the bottom of each can (...) (18 years ago, 11-Jan-08, to lugnet.org.ca.rtltoronto, lugnet.robotics, lugnet.org.ca.obb)
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| | Re: CAN you believe it... The next Robotics game.
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(...) Forgot one thing... Time Frame for the Game: How does late March, Early April sound for everyone?? Jeff VW (18 years ago, 11-Jan-08, to lugnet.org.ca.rtltoronto, lugnet.robotics, lugnet.org.ca.obb)
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| | CAN you believe it... The next Robotics game.
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Ok, so I meant to do this months ago, and I have just been swamped.. So with out further ado, here are my thoughts on our next game: ***...***The Can Game***...*** Premise of the Game: Build a robot that can find the heaviest can in the play field. (...) (18 years ago, 11-Jan-08, to lugnet.org.ca.rtltoronto, lugnet.robotics, lugnet.org.ca.obb)
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| | Re: Cleaning Battery Terminals
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In lugnet.robotics, Mark Riley wrote: <snip> (...) Ooooh... wireless remotes! Nice! Throw it at me and I'll test it when ready :) Dave K (18 years ago, 10-Jan-08, to lugnet.robotics, lugnet.trains)
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| | Re: Cleaning Battery Terminals
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(...) I just finished a second RCX and while the terminals aren't as shiny as the previous RCX, the RCX fired right up after I reassembled it. The crud on this latest RCX's terminals was bluish green so I suspect the outer silver layer got eaten (...) (18 years ago, 9-Jan-08, to lugnet.robotics, lugnet.trains)
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| | Re: Cleaning Battery Terminals
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In lugnet.robotics, Mark Riley wrote: <snip> (...) That's good news! I'm going to try this soon on some of my 4.5/9 volt battery boxes. As far as I can see, the vinegar won't harm the plastic yet should do a good number on the corroded contacts. (...) (18 years ago, 9-Jan-08, to lugnet.robotics)
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| | Cleaning Battery Terminals
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I haven't posted here in a while, my RCXs having been on a hiatus. Well, after breaking them out again, I discovered that I had foolishly left alkaline batteries in some of them and of course some of the batteries had started to leak. This caused (...) (18 years ago, 9-Jan-08, to lugnet.robotics)
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| | The Unofficial LEGO MINDSTORMS NXT Inventor's Guide
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I'm having a book signing this month for my new book The Unofficial LEGO MINDSTORMS NXT Inventor's Guide (No Starch Press), and I decided to officially announce the book here on LUGNET and invite everyone who lives in the Round Rock, Texas area to (...) (18 years ago, 4-Jan-08, to lugnet.announce, lugnet.robotics, lugnet.robotics.nxt, lugnet.events, lugnet.loc.us.tx, FTX) !
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| | NXT iterate files
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I wrote some NXC code that runs on the enhanced NBC/NXC firmware. It demonstrates how to iterate files on the filesystem. Let me know if you have any questions. John Hansen #define LOADER_HANDLE(_x) (_x&0xff) #define LOADER_ERR_BYTE(_x) (...) (18 years ago, 30-Dec-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: NXT Program: How to avoid stop-and-go? (US-Sensor Test Values)
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I tried to use a program to log the distance while the US-sensor is moving forward. Unfortunately, it doesn't go straight all the time. So, I simply display the US value and put the vehicle in different position manually. Here are my test values for (...) (18 years ago, 27-Dec-07, to lugnet.robotics)
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| | Individual Power-Functions elements now available
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Individual Power-Functions elements now available on H@H: battery box, both motor types, IR receiver and transmitter, and a Power-Function to 9V converter cable. Listed as shipping later in January. (18 years ago, 26-Dec-07, to lugnet.technic, lugnet.robotics)
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| | Re: NXT Program: How to avoid stop-and-go? (US-Sensor in angle)
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(...) That is a very interesting site, with some interesting information... but you might like to do those experiments yourself. For instance, the odd "ledge" in their data at 48 cm is not a feature with my US sensors - they may have been working (...) (18 years ago, 25-Dec-07, to lugnet.robotics)
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| | Re: NXC: How to read the distance of US-sensor?
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I found a piece of codes in a forum: (URL) guess I can assume it's returning cm. (...) (18 years ago, 24-Dec-07, to lugnet.robotics)
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| | NXC: How to read the distance of US-sensor?
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I'm new in NXC. In the NXC-guide, I found SensorUS() returning a value from US-sensor. But in the LEGO software I can select inch/cm. Questions: What value is it returning, inch or cm? Can I set it to inch or cm? thanks Phuoc Can HUA (18 years ago, 24-Dec-07, to lugnet.robotics)
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| | Re: NXT Program: How to avoid stop-and-go? (US-Sensor in angle)
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(...) (18 years ago, 24-Dec-07, to lugnet.robotics)
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| | Re: NXT Program: How to avoid stop-and-go? (US-Sensor in angle)
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Strangely, it slows down, i.e. it detects the further distance (less reflection?) in the same angle. I tried to put the US-sensor vertically. It still shows the same effect. I also notice the closer it comes the larger angle it needs to get a (...) (18 years ago, 23-Dec-07, to lugnet.robotics)
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| | Re: NXT Program: How to avoid stop-and-go? (US-Sensor in angle)
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(...) At a glancing angle (not approaching the wall "head on" at 90°, but at an angle) very little sound energy will be reflected back towards the sensor. If there isn't enough energy reflected back for the sensor to "hear" the echo, it won't detect (...) (18 years ago, 22-Dec-07, to lugnet.robotics)
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| | Re: NXT Program: How to avoid stop-and-go? (US-Sensor in angle)
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Brian, It works fantastic. Thanks. Now I've put 2 US Wait blocks. The 1st one to slow down for < 30cm and the 2nd one to turn for < 20cm. This works pretty well when the vehicle runs ~90 degree toward the wall. But when the angle is flat it only (...) (18 years ago, 22-Dec-07, to lugnet.robotics)
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| | Re: mindscript (NBC NXC)
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(...) If you are running on a Windows platform then you can start with Bricx Command Center (BricxCC). It is an integrated development environment (IDE) that supports Not eXactly C (NXC) and NeXT Byte Codes (NBC) for the NXT brick running either the (...) (18 years ago, 21-Dec-07, to lugnet.robotics)
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| | Re: NXT Program: How to avoid stop-and-go?
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(...) Yes. Move (unlimited) Starts the motors and *leaves them running* while progressing on to the next block in a sequence. The motor state will then remain unchanged until some other block (like a later Move or Motor block) changes it. Try it an (...) (18 years ago, 21-Dec-07, to lugnet.robotics)
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| | Re: NXT Program: How to avoid stop-and-go?
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But if the Move block is unlimited will the next block (Wait) be processed? and when it goes to Wait block isn't that mean Move block is done and it will stay in the Wait block for ever, because the vehicle is not moving? (...) (18 years ago, 21-Dec-07, to lugnet.robotics)
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| | Re: NXT Program: How to avoid stop-and-go?
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(...) Try a Move block set to "unlimited": that will turn the motors on and let them run. Then have a Wait block to wait for the US sensor to report an object, or something similar inside a Loop. When an object (like a wall) is detected, the next (...) (18 years ago, 21-Dec-07, to lugnet.robotics)
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| | NXT Program: How to avoid stop-and-go?
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I've just started with my very first vehicle according to the instruction. Then I added the distance sensor. So, my car will turn when it come too close to an obstacle. I use a loop with distance as exit condition, i.e. the loop repeats the forward (...) (18 years ago, 20-Dec-07, to lugnet.robotics)
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| | Re: mindscript (NBC NXC)
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Does that mean NBC or NXC can be used on NXT? Do you use any of them? Where can I find more deatails? C-like is good because I like C :-) Phuoc (...) (18 years ago, 20-Dec-07, to lugnet.robotics)
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| | Re: mindscript - subroutines
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(...) MindScript is a programming language created by LEGO for use with the earlier generations of programmable bricks such as the RCX, and Spybot. It cannot be used with the NXT. The NXT does not have any text-based programming languages that are (...) (18 years ago, 20-Dec-07, to lugnet.robotics)
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| | Re: mindscript - subroutines
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I'm so new that I don't even know MindScript :confused: My questions... where to get it and its documentation? Is that the only script language for NXT? When I start using some variables and calculations the block structue is becoming hard to read. (...) (18 years ago, 20-Dec-07, to lugnet.robotics)
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| | "reverse parking sensor" type sensor for Mindstorms
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Does anyone know of a sensor (preferably for the RCX) that works similarly to the "reverse parking sensors" for cars? (18 years ago, 20-Dec-07, to lugnet.robotics)
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| | Re: Robo Rocks 2007 (Event Photos)
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Full gallery of pictures from the event, click (URL) here>. Post Moderation P.S. Please pardon the duplicate postings. (18 years ago, 17-Dec-07, to lugnet.robotics, FTX)
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| | Re: Robo Rocks 2007
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We won Second Place!!!!! We were visited by the judges and they told us, the difference in winning First Place was very close! Thank you EBT, thank you Robo Rocks, thank you RCX and RoboLab! Eric Sophie (URL) (18 years ago, 17-Dec-07, to lugnet.robotics, FTX)
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| | Re: Robo Rocks 2007
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We won Second Place!!!!! We were visited by the judges and they told us, the difference in winning First Place was very close! Thank you EBT, thank you Robo Rocks, thank you RCX and RoboLab! Eric Sophie (URL) (18 years ago, 17-Dec-07, to lugnet.robotics, FTX)
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| | Re: Robo Rocks 2007
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My team was able to place one of the three batteries, on the second battery, our robot's B motor wheel slipped on the hub and was not able to complete the course. On our second try, we were able to complete the slolam and place the first battery (...) (18 years ago, 17-Dec-07, to lugnet.robotics, FTX)
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| | Re: Robo Rocks 2007
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My team was able to place one of the three batteries, on the second battery, our robot's B motor wheel slipped on the hub and was not able to complete the course. On our second try, we were able to complete the slolam and place the first battery (...) (18 years ago, 17-Dec-07, to lugnet.robotics, FTX)
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| | Robo Rocks 2007
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I am at the Robo Rocks 2007 robotics competition in Edison New Jersey with my team from the School for Enterprise Business and Technology. We are competing at the Middlesex County College and we are moments away from beginning! It is so exciting! (...) (18 years ago, 17-Dec-07, to lugnet.robotics, FTX)
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| | Robo Rocks 2007
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I am at the Robo Rocks 2007 robotics competition in Edison New Jersey with my team from the School for Enterprise Business and Technology. We are competing at the Middlesex County College and we are moments away from beginning! It is so exciting! (...) (18 years ago, 17-Dec-07, to lugnet.robotics, FTX)
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| | Re: NXTLog sumo Event
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The deadline for the NXTLog sumo (Dec 15th) is approaching. The details are posted here: (URL) summarize: Create a sumo robot, and post it to NXTLog (on the LEGO MINDSTORMS web site). Several robots will be selected and built, using instructions & (...) (18 years ago, 5-Dec-07, to lugnet.robotics)
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| | Re: any video of LEGO fire fighting bots?
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(...) (URL) the video can be found here-- (URL) little slow, mind you--sorry about that. Dave K (18 years ago, 5-Dec-07, to lugnet.robotics)
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| | RE: any video of LEGO fire fighting bots?
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Joe, Certainly there have been instances of lego robots in the contest. The department at Trinity College sponsoring the competition sells videos of the competition each year. I have several of those from years long past. I bought them from the (...) (18 years ago, 5-Dec-07, to lugnet.robotics)
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| | Re: Need help combining steering with odometry in NXC
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(...) Here is a line follower from my book, NXT Power Programming: #define SLOW_SPEED 25 #define FAST_SPEED 75 #define EYE_PORT S1 #define EYE_VALUE SENSOR_1 int BlackThreshold; int WhiteThreshold; inline int min(int v1, int v2) { return (v1 < v2) ? (...) (18 years ago, 5-Dec-07, to lugnet.robotics)
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| | Re: Need help combining steering with odometry in NXC
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(...) If you are really following a line then you should use a traditional line following algorithm rather than try to use motor synchronization and turn ratios. There isn't any reason to synchronize the motors since following a line usually (...) (18 years ago, 5-Dec-07, to lugnet.robotics)
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| | any video of LEGO fire fighting bots?
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I'm giving a demo on Saturday of the Trinity College Robot Fire Fighting contest. There are likely to be a lot of LEGO bot builders there (Fort Collins has one of the biggest FIRST LEGO League followings in the country). I'll be showing some videos (...) (18 years ago, 5-Dec-07, to lugnet.robotics)
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| | Re: Need help combining steering with odometry in NXC
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(...) Update: upon a couple more hours' testing, I found that the above command actually prevents the bot from turning at all. It will only turn if I pass at least RESET_BLOCK_COUNT for the last parameter (of course other combinations that include (...) (18 years ago, 4-Dec-07, to lugnet.robotics)
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| | Need help combining steering with odometry in NXC
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I'm working on an NXT bot to do the Trinity College Fire Fighting Robot Contest ((URL) at least well enough to get through this Saturday's demo at the local science museum. At the moment, I'm just trying to get the robot to follow the wall (which is (...) (18 years ago, 4-Dec-07, to lugnet.robotics)
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| | Re: NXT compatible bluetooth adapters
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I have a older no-name one with BlueSoleil. But that one didn't work with the instruction I followed. (...) (18 years ago, 4-Dec-07, to lugnet.robotics)
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| | Re: NXT compatible bluetooth adapters
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At the very beginning, I could get the BlueSoleil (the software with an orange in the middle) connect to NXT, no problem. But it was no use, as long as Lego software can't find the bluetooth. But that was only at the beginning. I can't reproduce (...) (18 years ago, 4-Dec-07, to lugnet.robotics)
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| | Re: NXT compatible bluetooth adapters
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Besides, there's an according list on the official LEGO MINDSTORMS NXT site: (URL) certainly not complete, though, but a starting point (and they may be interested in the results of this discussion as well). As for BlueSoleil, I could not get it (...) (18 years ago, 3-Dec-07, to lugnet.robotics)
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| | Re: NXT compatible bluetooth adapters
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I bought the Kensington 33085 and have had that working fine on 3 different PCs. I also bought a no-name bluetooth adapter that uses the BlueSoliel software. I was able to get that one working on the PCs as well. The Kensington, bought for about $50 (...) (18 years ago, 3-Dec-07, to lugnet.robotics)
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| | Re: NXT compatible bluetooth adapters
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I bought one of those "no name" adapters (with Bluesoleil software) $10 (Australian). Of course, plug and no-go. Then I found this: (URL) working now. The adapter has been identified as "ISSC USB Bluetooth Device". (...) (18 years ago, 3-Dec-07, to lugnet.robotics)
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| | NXT Power Programming book
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As a convinced fan of graphical both programming environments : ROBOLAB and NI NXT toolkit, I would like to share with you how much I appreciate the tremendous work John Hansen has done in the development of BricxCC and more recently in his new book (...) (18 years ago, 28-Nov-07, to lugnet.robotics)
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| | Re: BricxCC etc vs. MS Robotics Studio
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Dear list, I tried to look this up a little on the (URL) site but could not find it easily: could you please tell me where I can find information or user feedback about use of the MSRS with the RCX? Is it a reasonable choice for fast prototyping and (...) (18 years ago, 19-Nov-07, to lugnet.robotics)
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| | NXT Sumo - NXTize it all!
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Some of us here in Indiana and surrounding areas recently got together for a "just for fun" sumo event. We didn't keep score, and in fact the goal was to use stock LEGO models as much as possible. We started out with making five copies of the #8275 (...) (18 years ago, 12-Nov-07, to lugnet.technic, lugnet.robotics)
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| | NXT Software Version 1.1
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It looks like we will be purchasing an NXT when we visit Carlsbad Thanksgiving week. Now comes the question of software. The computer where we do most programming is a Vista Home Premium eMachine desktop. The computer where we play most is an XP (...) (18 years ago, 9-Nov-07, to lugnet.robotics)
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