http://robocupjunior.org.nz/forum/ The forum for all the info on Robocup Junior en Mon, 06 Sep 2010 20:08:56 +0000 http://robocupjunior.org.nz/forum/topic/want-some-info#post-38 Wed, 11 Aug 2010 07:05:47 +0000 Sam 38@http://robocupjunior.org.nz/forum/ <p>Heya Darko. Just got Final word from Harold Russ. It's definately going to be 27cm this year. Sorry for the confusion mate. Good luck! </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-37 Wed, 04 Aug 2010 09:10:34 +0000 Darko 37@http://robocupjunior.org.nz/forum/ <p>Thank you. I didn't mean it to be offensive. </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-36 Tue, 03 Aug 2010 08:05:53 +0000 Sam 36@http://robocupjunior.org.nz/forum/ <p>What do you mean slack? Christchurch is quite strict to the rules; It's just that some of the official (used on the day) rules seem to differ from those of the site :) Don't worry, the rules will be the same everywhere I think ;) </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-35 Mon, 02 Aug 2010 07:05:23 +0000 Darko 35@http://robocupjunior.org.nz/forum/ <p>I wonder if Otago will be as slack. :| </p> http://robocupjunior.org.nz/forum/topic/rescue-checkpoints#post-34 Mon, 02 Aug 2010 07:04:34 +0000 Darko 34@http://robocupjunior.org.nz/forum/ <p>I'll be at Otago. I didn't really have much luck with the check point either. Just go with trial and error. </p> http://robocupjunior.org.nz/forum/topic/rescue-checkpoints#post-33 Mon, 02 Aug 2010 01:10:10 +0000 Lavinia Robyns 33@http://robocupjunior.org.nz/forum/ <p>Thanks for the link. V. helpful for chemical spill but couldn't open the Turn on Green one. will give it another go. We are only using the 2 sensors at the moment programmed to read above or below a number -suitable for reading white/black. when both readings drop below 55 the robot stops. We then want it to turn right and follow the black again. </p> http://robocupjunior.org.nz/forum/topic/rescue-checkpoints#post-32 Sun, 01 Aug 2010 10:38:36 +0000 Sam 32@http://robocupjunior.org.nz/forum/ <p>Nice find. I tried that method a while ago but never had enough success to keep trying. I'm still trying to find a way to see silver for now. My sensors refuse to give a recognisable reading... All the best! Where are you entering? </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-31 Sun, 01 Aug 2010 10:27:58 +0000 Sam 31@http://robocupjunior.org.nz/forum/ <p>I'm down in Christchurch :) </p> http://robocupjunior.org.nz/forum/topic/rescue-checkpoints#post-30 Sun, 01 Aug 2010 07:10:03 +0000 Darko 30@http://robocupjunior.org.nz/forum/ <p>It might help to go here: <a href="http://www.robocupjunior.org.au/node/70" rel="nofollow">http://www.robocupjunior.org.au/node/70</a> </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-29 Sun, 01 Aug 2010 07:08:12 +0000 Darko 29@http://robocupjunior.org.nz/forum/ <p>By the way Sam, which region do you compete in? I'm just a little worried that my region might be a little more strict than the others. </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-28 Wed, 28 Jul 2010 07:59:14 +0000 Sam 28@http://robocupjunior.org.nz/forum/ <p>Well It's 10 Light sensors in total. I'm not using Standard NXT Sensors though, Otherwise You'd need a port-splitter :) </p> http://robocupjunior.org.nz/forum/topic/rescue-checkpoints#post-27 Wed, 28 Jul 2010 07:51:23 +0000 Sam 27@http://robocupjunior.org.nz/forum/ <p>@Darko: The light level for green will constantly vary depending on the enviroment and light sorce :)</p> <p>Sorry I can't quite understand the other qestion though. Where exactly the problem lies would need to be found via trail and error I think </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-26 Wed, 28 Jul 2010 07:45:43 +0000 Darko 26@http://robocupjunior.org.nz/forum/ <p>8 light sensors? How do you fit them on? </p> http://robocupjunior.org.nz/forum/topic/rescue-checkpoints#post-25 Wed, 28 Jul 2010 07:44:59 +0000 Darko 25@http://robocupjunior.org.nz/forum/ <p>Sorry for double posting. By the way, what number did you use on the NXT light sensor to detect green? </p> http://robocupjunior.org.nz/forum/topic/rescue-checkpoints#post-24 Wed, 28 Jul 2010 07:43:45 +0000 Darko 24@http://robocupjunior.org.nz/forum/ <p>I might be able to help but I don't quite get your description. Could you post a screenshot or somthing? </p> http://robocupjunior.org.nz/forum/topic/rescue-checkpoints#post-23 Wed, 28 Jul 2010 03:45:17 +0000 Lavinia Robyns 23@http://robocupjunior.org.nz/forum/ <p>We are using variables to program the sensors and using the logic block to inform the loop controller when both sensors read the green checkpoints. We want the robot to stop then turn. We can't get this to work - the stop and turn blocks are located outside the loop. What have we missed here? </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-22 Sun, 25 Jul 2010 05:23:20 +0000 Sam 22@http://robocupjunior.org.nz/forum/ <p>From my experience, It's almost impossible to seperate out a value for green from white and black using a light sensor sorry. I'm currently using a total of 8 light sensors to stay on the line and 2 to see green/silver. I never succeed with Standard '1 light sensor on each side', But if you find a way, please share! :) </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-21 Sun, 25 Jul 2010 02:29:06 +0000 Darko 21@http://robocupjunior.org.nz/forum/ <p>Thanks Sam! That extra 5 cm really does help! I do so hope the admin clear that up. But you may have misunderstood my second problem. I just wanted to know the readings of the "Green spots" on the maze on the NXT light sensor. And by the way, I use a NXT v1.0 because I can't be bothered to get a new one.<br /> Thanks a lot! </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-20 Sat, 24 Jul 2010 21:27:56 +0000 Sam 20@http://robocupjunior.org.nz/forum/ <p>Hi Darko.</p> <p>The first problem is a fairly common one within Premier Rescue. I've entered rescue a few years now, and although the rules state 27cm, they have actully been 32cm (27 is incredably hard to fit everything in, 5cm make a huge difference). I can't proove it will be the same this year, but prehaps Admin can clear that up. My current robot is about 30cm, And for now I'm gambling it's 32cm as per previous years.</p> <p>As for green, thats a tricky one most people also struggle with. There is a bit of tutorial here:<br /> <a href="http://robocupjunior.org.nz/_downloads/2.0_Training_%20Support-Rescue_Programming.pdf" rel="nofollow">http://robocupjunior.org.nz/_downloads/2.0_Training_%20Support-Rescue_Programming.pdf</a><br /> And thats a start. I personally didn't get too much success with that, but the ideas behind it ('if both light sensors see black') proove a great start. </p> <p>Hope that helps, Sam </p> http://robocupjunior.org.nz/forum/topic/best-robot-ever#post-19 Fri, 23 Jul 2010 07:58:29 +0000 Darko 19@http://robocupjunior.org.nz/forum/ <p>Is this still open? 'cause I'll build a "Carbon Extractor From Surrounding Air to Build Diamond" robot. Or CEFSABD for short. </p> http://robocupjunior.org.nz/forum/topic/want-some-info#post-18 Fri, 23 Jul 2010 07:50:46 +0000 Darko 18@http://robocupjunior.org.nz/forum/ <p>Hello.<br /> I am new to Robocup this year, and being a little over confident, I decided that I will do the Premier Rescue.<br /> The two most recurring problem was packing everything into the "27 cm measuring cylinder" and the readings of the shortcut markers and chemical spill on the NXT light sensor.<br /> I know I'll need to do the stuff in the first problem, but could someone help me with the second one? Please? </p> http://robocupjunior.org.nz/forum/topic/nz-developed-rescue-tiles#post-17 Fri, 23 Jul 2010 07:42:24 +0000 Darko 17@http://robocupjunior.org.nz/forum/ <p>Could you please tell me the readings of the NXT light sensors on the shortcut markers and the chemical spill? And how much did that cost? </p> http://robocupjunior.org.nz/forum/topic/size-of-dance-floor#post-16 Thu, 03 Jun 2010 22:11:54 +0000 Sandy 16@http://robocupjunior.org.nz/forum/ <p>The reduction in size was to help solve 3 problems we were having in schools, homes and competition venues : uniformity, space and portability.<br /> 1. The material for the dance floor needed to be standardised so that robots would behave in a predictable manner at competitions. After much discussion we chose mdf because of its universal availability and its tendency to stay straight.<br /> 2. Many school rooms and homes do not have the space to lay a 3m by 3m floor down, or store it.<br /> 3. Those of us who cart dance floors from school to school or around schools and venues needed something portable. The smaller size allows a cheap portable practice floor to be made out of five or eight (depending on whether you want the overrun) 600 by 1200 x 3mm or 4.5mm mdf sheets which can fit in the back of a car and be stored under a desk, beside a fridge etc. Cost is around $7 per sheet.<br /> Yes, it makes the dance a little different to choreograph, but should encourage the use of sensors for avoiding edges and bumps. </p> http://robocupjunior.org.nz/forum/topic/size-of-dance-floor#post-15 Wed, 26 May 2010 07:32:27 +0000 CPowick 15@http://robocupjunior.org.nz/forum/ <p>Why the chance in the size from 3m by 3m to 1.8 by 1.8m ? This will restrict the movement opportunities of the robotic dance and the viewing opportunties for the crowd. </p> http://robocupjunior.org.nz/forum/topic/battery-back-cover-for-rcx#post-14 Wed, 10 Feb 2010 07:42:24 +0000 Megan Pledger 14@http://robocupjunior.org.nz/forum/ <p>I got a replacement in the mail today from Lego! YAY!!!!</p> <p>Thanks heaps, Lego. Very much appreciated! </p> http://robocupjunior.org.nz/forum/topic/battery-back-cover-for-rcx#post-13 Tue, 09 Feb 2010 20:23:35 +0000 Megan Pledger 13@http://robocupjunior.org.nz/forum/ <p>Hi,</p> <p> I'm missing the grey-ish battery cover for a Mindstorms 1.0 RCX yellow brain/brick. </p> <p> Does anyone have a spare one they don't mind giving/selling to me? </p> <p>[I'm hoping that someone who may have had a dead brick at some time has kept the battery cover.] </p> http://robocupjunior.org.nz/forum/topic/resource-development#post-12 Thu, 30 Jul 2009 15:02:13 +0000 davidt 12@http://robocupjunior.org.nz/forum/ <p>Eventually got mine published on the mit site, should find it here.</p> <p><a href="http://scratch.mit.edu/projects/tamatea/628629" rel="nofollow">http://scratch.mit.edu/projects/tamatea/628629</a></p> <p>Instructions for use are on in the 'project notes' - have fun. </p> http://robocupjunior.org.nz/forum/topic/resource-development#post-11 Thu, 23 Jul 2009 02:01:03 +0000 Jelly1200 11@http://robocupjunior.org.nz/forum/ <p>Hi,</p> <p><a href="http://scratch.mit.edu/projects/jelly1200/544387" rel="nofollow">http://scratch.mit.edu/projects/jelly1200/544387</a> is a line follower I created a while ago. A bit silly but was fun. </p> <p>If anyone is keen on any collaborative Scratch projects let me know. </p> <p><a href="mailto:j.pears@selhouse.school.nz">j.pears@selhouse.school.nz</a> </p> http://robocupjunior.org.nz/forum/topic/nz-developed-rescue-tiles#post-10 Thu, 23 Jul 2009 00:37:18 +0000 davidt 10@http://robocupjunior.org.nz/forum/ <p>Fustrated at the time to order equipment from overseas I spent part of the last break 'perfecting' a NZ developed version of the resuce tiles in association with a local print/design company. These are individually cut tiles printed on to 6mm coreflute (the stuff estate agents signs are made from). Compared to what normally is on offer I think the following is a fair assessment of the outcomes.</p> <p>Advantages:-<br /> 1) Lightweight, full set just a couple of kg.</p> <p>2) Can order individual tiles for extras/replacement.</p> <p>3) 'Ready to go stes', no gluing or making other bits (bridge, speed bumps, silver foil etc), huge TIME saving. Only exception being that a block may need making for the premier end tile and it assumed you can provide a drinks bottle and a drinks can!</p> <p>4) No need to mount on to another surface, eg cardboard or custom wood.</p> <p>5) No cutting up etc.</p> <p>6) 16 tiles are provided as in the rules, includes the 'start' tile not supplied on some versions.</p> <p>7) Currently 7-10 days delivery.</p> <p>8) Designed to allow better/easier detection between green/black (a lighter shade of green is used which gives a midway result between the white and black areas)</p> <p>9) Successfully trialed at a Robocup Junior training event.</p> <p>10) NZ Developed, helps NZ economy!</p> <p>11) Initial cost of $325 (plus GST and Deelivery) is more than the single roll mat version, but much cheaper when considering having to also provide glue, timber etc plus the time needed to make the working version.</p> <p>Disadvantages:-<br /> Perhaps not as robust as mounted on 12mm custom wood and you perhaps need some sticky tape to prevent adjacent tiles from moving around too easily.</p> <p><a href="mailto:davidt@tamatea.school.nz">davidt@tamatea.school.nz</a> </p> http://robocupjunior.org.nz/forum/topic/resource-development#post-9 Wed, 22 Jul 2009 23:55:50 +0000 davidt 9@http://robocupjunior.org.nz/forum/ <p>No problem, except I couldn't establish an email for you. If needed, contact me here <a href="mailto:davidt@tamatea.school.nz">davidt@tamatea.school.nz</a> </p> http://robocupjunior.org.nz/forum/topic/resource-development#post-8 Tue, 21 Jul 2009 06:44:33 +0000 kcording 8@http://robocupjunior.org.nz/forum/ <p>I have a class of scratch users who are starting out with NXT and would love it. Thank you<br /> Kimberlie </p> http://robocupjunior.org.nz/forum/topic/does-anyone-know-this-website#post-7 Sun, 19 Jul 2009 10:48:16 +0000 Megan Pledger 7@http://robocupjunior.org.nz/forum/ <p>I finally re-found it but it was a pay for use website. I'd forgotten that.</p> <p>FYI<br /> <a href="http://www.robolabonline.com/" rel="nofollow">http://www.robolabonline.com/</a> </p> http://robocupjunior.org.nz/forum/topic/does-anyone-know-this-website#post-6 Fri, 17 Jul 2009 03:17:57 +0000 Megan Pledger 6@http://robocupjunior.org.nz/forum/ <p>There was a website where absolute beginners could practise doing stuff in a simulated environment e.g. how much time should you let the motor run for so that a robo-car turns 90 degrees?</p> <p>It was lesson based and aimed at kids.</p> <p>I never bookmarked it and now I can't find it.</p> <p>Does anyone have the URL for it? </p> http://robocupjunior.org.nz/forum/topic/resource-development#post-5 Thu, 16 Jul 2009 15:49:32 +0000 davidt 5@http://robocupjunior.org.nz/forum/ <p>I'm developing a few resources to help with rescue. One is a simulator written in SCRATCH. Although this is different to how NXT-G works, it may be helpful for testing. For example, you can change/test the motor speed, turn angle, distance between light sensors etc all before you make make actual changes to your bot.</p> <p>Any interested SCRATCH users, let me know and I can mail version 1 to you. </p> http://robocupjunior.org.nz/forum/topic/best-robot-ever#post-4 Thu, 16 Jul 2009 15:38:29 +0000 davidt 4@http://robocupjunior.org.nz/forum/ <p>Great idea test_user, would it also transform in to a giant battle bot? </p>