 | | Re: WiiMote controlled shipyard crane
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Nice idea. I wonder if it is possible to make the Wiimote talk directly to the NXT over Bluetooth... (18 years ago, 28-Jan-08, to lugnet.robotics.rcx)
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| | WiiMote controlled shipyard crane
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Recently, I've bought WiiMote (Nintendo Wii Controller), which can be tethered to a regular PC via Bluetooth. You can then use for example this library - (URL) - to read WiiMote buttons, IR and accelerometer data. I've combined this with a simple (...) (18 years ago, 27-Jan-08, to lugnet.robotics.rcx)
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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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| | NXT Battery not charging
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Has anyone had this issue before; I have a NXT with the rechargable battery pack and everything has been working fine. I've charged it twice with out issue, but then last night the NXT complained about a low battery but when I hooked it up to the (...) (18 years ago, 27-Jan-08, to lugnet.robotics.nxt)
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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: NXT Power Programming > LDD files?
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(...) I don't know if the instructions are on-line (publishers don't always like that), but you might want to have them build something similar of their own, just to help in designing something. Remote controls tend to be pretty simple (although (...) (18 years ago, 27-Jan-08, to lugnet.robotics.nxt)
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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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| | NXT Power Programming > LDD files?
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Yesterday, I acquired and am sharing John's book "NXT Power Programming". I tried to read as much of it last night. Great book! Anyway, I'm at PSU conducting a Lego NXT class with 7 boys. Several of the kids are very interested in the Remote Control (...) (18 years ago, 26-Jan-08, to lugnet.robotics.nxt)
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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: Want to Buy a RCX USB IR-Tower
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(...) Just buy a USB to Serial adaptor and use your Serial Tower if you can't find a USB Tower for sale anywhere. They're not very expensive and work fine. Many new desktop PC's done have serial ports these days. Dom (18 years ago, 23-Jan-08, to lugnet.robotics.rcx.legos)
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| | Re: Want to Buy a RCX USB IR-Tower
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(...) If your IR tower still functions, and it's just a matter of not having a serial port, the simplest solution would be to just buy an adapter that will allow you to hook up a serial device to a USB port. I don't know if Radio Shack will deliver (...) (18 years ago, 23-Jan-08, to lugnet.robotics.rcx.legos)
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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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| | Want to Buy a RCX USB IR-Tower
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Guys, Just retrieved my (dusted) RCX kit & a few spybots, when I move things around, unfortunately, my notebook does not have serial port any more. Moreover, the CD does not support XP either. Do you aware if any online shop will sell RCX USB (...) (18 years ago, 22-Jan-08, to lugnet.robotics.rcx.legos)
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| | Re: NXT apparently cannot detect two buttons pressed at once
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(...) Actually, I've found that the orange button cannot be used independently, at least not from an NXT-G program. A simple program in NXT-G demonstrates the buttons supercede each other as follows: Right button (lowest priority) Left button Off (...) (18 years ago, 21-Jan-08, to lugnet.robotics.nxt, FTX)
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| | Re: NXT apparently cannot detect two buttons pressed at once
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(...) Confirmed. The arrows and grey button share a common resistor ladder and only one can be detected. But the orange "on" button has an independant circuitry and can be used separately. See keypad schematics in the HDK. Philo (18 years ago, 21-Jan-08, to lugnet.robotics.nxt, FTX)
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| | NXT apparently cannot detect two buttons pressed at once
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Can someone confirm that the front panel buttons on the NXT are wired in such a way that it does not work to press two of them at once? Not too surprising, I suppose, just as early computer keyboards were pre-decoded to signal which single key was (...) (18 years ago, 21-Jan-08, to lugnet.robotics.nxt, FTX)
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| | pbLua News - Beta 13y is Released!
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I am pleased to announce the release of pbLua Beta 13y - which is a replacement firmware for the LEGO MINDSTORMS NXT that runs right on the brick. It parses source code files sent to it via the USB or Bluetooth ports and runs the code. (URL) Lua is (...) (18 years ago, 20-Jan-08, to lugnet.robotics.nxt)
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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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| | Re: LDraw NXT parts kit overhaul
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(...) Thanks, Philo! I really appreciate the hard work you (and others) have put into these parts. Your website makes it easy to add the NXT parts into MLCAD. (...) I'm glad to see that you've also addressed the "stone" colors issue on the website (...) (18 years ago, 18-Jan-08, to lugnet.cad, lugnet.robotics.nxt, FTX)
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| | Re: Self-brew flexible bricks and silent motor for Lego NXT
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(...) There's a simple solution to the problem you've been having with air bubbles. Once you've got the mold filled, you need to introduce vacuum, which will pull the bubbles right out of the material and dissipate them. Back when I was in the (...) (18 years ago, 13-Jan-08, to lugnet.robotics.nxt)
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| | Re: LDraw NXT parts kit overhaul
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(...) This is great! Thanks much Philo! Now, if only someone can convince Kevin to make LSYNTH work with the wider cables of NXT. (18 years ago, 18-Jan-08, to lugnet.cad, lugnet.robotics.nxt, FTX)
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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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| | LDraw NXT parts kit overhaul
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After several weeks of patient work, I am finally finished with a major redesign of all NXT parts. All these parts were submitted to (URL) LDraw Parts Tracker> but for your convenience I have updated the (URL) kit> available on my website. Using (...) (18 years ago, 18-Jan-08, to lugnet.announce, lugnet.cad, lugnet.robotics.nxt, FTX) !!
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| | Re: Self-brew flexible bricks and silent motor for Lego NXT
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Sibrecht, that's awesome! I've blogged an according entry to THE NXT STEP blog: (URL) moulding one's own custom parts - a dream ... Best, MP Zitat von Sibrecht Bouwstra <s.bouwstra@student.tue.nl>: (...) ---...--- This message was sent using IMP, (...) (18 years ago, 16-Jan-08, to lugnet.robotics.nxt)
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| | Re: Self-brew flexible bricks and silent motor for Lego NXT
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(...) Sounds interesting. I'll check out your web site when I can do that without using Flash. (18 years ago, 16-Jan-08, to lugnet.robotics.nxt)
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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: Bricxcc Problem
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(...) I recommend that you switch to using the internal NBC/NXC compiler which you can do via the Preferences dialog. The error you are getting is from the NBC executable. Your best bet is to email me when you run into problems with BricxCC or (...) (18 years ago, 14-Jan-08, to lugnet.robotics.nxt, FTX)
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| | Bricxcc Problem
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I get this error then Bricxcc either wont load or when it does load won't let me edit files. (URL) (18 years ago, 14-Jan-08, to lugnet.robotics.nxt, FTX)
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| | Re: Enhanced standard NXT firmware updates
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I don't do a lot of high end stuff but I think I can use the trig functions! (18 years ago, 13-Jan-08, to lugnet.robotics.nxt)
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| | Re: Enhanced standard NXT firmware updates
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I don't do a lot of high end stuff but I think I can use the trig functions! (18 years ago, 13-Jan-08, to lugnet.robotics.nxt)
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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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| | Self-brew flexible bricks and silent motor for Lego NXT
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In the context of my study Industrial Design at the TU/e I have developed a 'natural animation' expansion pack for Lego® Mindstorms® NXT. My goal was to create an actuator and brick that stimulate natural animation and are useful for the creation of (...) (18 years ago, 12-Jan-08, to lugnet.robotics.nxt)
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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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| | Enhanced standard NXT firmware updates
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I have uploaded a pre-release of a new enhanced NBC/NXC firmware (1.06a) which you may want to try out. It has a new arrop opcode which supports a number of useful array operations. OPARR_SUM, OPARR_MEAN, OPARR_SUMSQR, OPARR_STD, OPARR_MIN, (...) (18 years ago, 11-Jan-08, to lugnet.robotics.nxt)
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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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| | Java for NXT
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The 0.5 beta release for Windows and for Linux is now on the sourceforge web site. (URL) changes and new features include: - Garbage collector - Execute code from flash - Automatic defrag of file system - Greatly improved Bluetooth support including (...) (18 years ago, 9-Jan-08, to lugnet.robotics.nxt)
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| | Re: 8479 Code Pilot Barcode Analysis and Code Sheet
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(...) Alex Christensen posted a PDF file with these same bar codes back in February of 2007: (URL) based his work on Doug Eaton's extremely helpful VLL page: (URL) Hansen (18 years ago, 7-Jan-08, to lugnet.robotics.codepilot, lugnet.technic)
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| | Re: Hi-speed port communication
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I posted a zip to the NXC samples page containing a pair of programs that show how to send a message from one NXT to another over a wire connected between port 4 on both NXTs. (URL) Hansen (18 years ago, 7-Jan-08, to lugnet.robotics.nxt)
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| | Re: Hi-speed port communication
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(...) Hi all, the physical connection of NXTs via RS485 is just the first half of the solution... Remeber, at 2-wire RS485 you can have one master only and up to 31 slaves. To address each slave, you need to implement a special protocol which (...) (18 years ago, 5-Jan-08, to lugnet.robotics.nxt)
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| | 8479 Code Pilot Barcode Analysis and Code Sheet
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Dr. Soubhi Sabbagh contacted me recently to get information on Code Pilot, and collecting various sources he was able to analyse and create a PDF code sheet. " So, I decided to study the bar code algorithm and I co-operated with www.dlsoft.com until (...) (18 years ago, 5-Jan-08, to lugnet.robotics.codepilot, lugnet.technic)
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| | Re: Hi-speed port communication
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Hi Ross, (...) it should be possible to use RS-485 as a bus, i.e. connect several NXTs with one cable. You need to make the cable yourself, though, and you may need some termination on the ends. Jürgen (18 years ago, 4-Jan-08, to lugnet.robotics.nxt)
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| | Re: Hi-speed port communication
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(...) Thanks John. I agree that from the electrical point of view, just connecting one port 4 to another port 4 should just work with no hardware other than the cable (for short lengths, like the cables that come with the NXT). For longer cables, a (...) (18 years ago, 5-Jan-08, to lugnet.robotics.nxt)
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| | Re: Hi-speed port communication
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(...) Two. Input port #4 fills up pretty quick. Should give a nice performance boost over BT though. (18 years ago, 4-Jan-08, to lugnet.robotics.nxt)
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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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| | Re: Hi-speed port communication
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(...) Cool! I wonder if you could daisy-chain NXTs using this technique, and if so, how many you could connect? ROSCO (18 years ago, 4-Jan-08, to lugnet.robotics.nxt)
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| | Hi-speed port communication
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I've been getting a number of emails from some people who want to know how to use the hi-speed RS-485 port 4 functionality in the NXT using the standard firmware. With John Barnes' help I now know how to get it to work correctly. Here is a simple (...) (18 years ago, 4-Jan-08, to lugnet.robotics.nxt)
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| | Re: designing new NXT parts (propeller and motor) using rapid prototyping
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(...) Indeed, this 180mA limitation is the one of the 4.3V power supply, that feeds the sensors and the motor position encoders. The motors themselves can receive a much higher current, limited by their own thermal protection and by the maximum (...) (18 years ago, 31-Dec-07, to lugnet.robotics.nxt)
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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: NXC problem
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(...) Remove the #include "NXCDefs.h" line since recent versions of the compiler do not require that you explicitly include this file. Make sure you are running the latest BricxCC and NBC/NXC compiler. The lastest version of the compiler is (...) (18 years ago, 30-Dec-07, to lugnet.robotics.nxt)
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| | Re: designing new NXT parts (propeller and motor) using rapid prototyping
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(...) Nice looking parts! One of those times I wish I had a access to such equipment. (...) A nice idea, and well-written. There are a few interesting points that I thought of while reading through it. First, you mention the NXT limits the total (...) (18 years ago, 30-Dec-07, to lugnet.robotics.nxt)
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| | designing new NXT parts (propeller and motor) using rapid prototyping
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Dear all, For those interested, I have been exploring the use of rapid prototyping technology in building new parts for the NXT. I attempted to build a propeller brick in combination with a more powerful motor. Read my results on (...) (18 years ago, 30-Dec-07, to lugnet.robotics.nxt)
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| | NXC problem
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I've tried to install Bricx and NXC but when I try to compile a simple program I get an error like "Unable to find include file: "NXCDefs.h". I figure I probably just have something configured incorrectly but can't find any guidance as to what I (...) (18 years ago, 28-Dec-07, to lugnet.robotics.nxt)
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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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| | Re: robolabatceeo/college/tutorials Is not working
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(...) I have contacted Tuffs via e-mail. I will be calling them soon. Thanks for your guidance. Tom (18 years ago, 24-Dec-07, to lugnet.robotics.rcx.robolab)
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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: RIS 2.0 software
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(...) Hi Richard, The first step you should take is to run the Program Compatibility Wizard in Windows XP. You can run this program by selecting the Start button, choose All Programs, Accessories, and then Program Compatibility Wizard. If you follow (...) (18 years ago, 21-Dec-07, to lugnet.robotics.rcx)
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