LEGO Engineering - http://www.legoengineering.com/knowledgemanager en-us http://www.legoengineering.com/knowledgemanager ActiveKB NX knowledgebase@legoengineering.com Wed, 19 Jun 2013 14:20:46 CDT 20 Help! My ROBOLAB 2.9 serial number doesn't work. http://www.legoengineering.com/knowledgemanager/questions/293/ ROBOLAB 2.9 is an upgrade product. The installer for ROBOLAB 2.9 asks that you enter the serial number from a previous version of ROBOLAB (2.0 - 2.5.4). The number is printed on your 2.5.4 or ear ... LEGOengineering KnowledgeBase Tue, 04 May 2010 23:01:33 GMT How do I use the mail command on the RCX? http://www.legoengineering.com/knowledgemanager/questions/119/ The RCX is always ready to receive mail which means that all you need to do to send a mail value is to wire in the send mail icon which can be found under RCX communications. The code below makes ... LEGOengineering KnowledgeBase Fri, 23 Apr 2010 19:04:23 GMT Why do I need to zero sensors and containers? http://www.legoengineering.com/knowledgemanager/questions/103/ Container values are global, meaning they are not automatically reset when a new or different program is opened. Sometimes there are values left in the containers and sensort from a previous progr ... LEGOengineering KnowledgeBase Fri, 23 Apr 2010 19:01:39 GMT Program a car to drive when the lights are off and stop when the lights are turned back on. http://www.legoengineering.com/knowledgemanager/questions/71/ One possible solution is below: ses LEGOengineering KnowledgeBase Fri, 23 Apr 2010 19:01:05 GMT How to tell different colored objects apart in vision center http://www.legoengineering.com/knowledgemanager/questions/55/ First define three different sensors, putting each of the sensors on a different plane. In order to define your sensor on a certain plane click on the small box just below and on the right hand si ... LEGOengineering KnowledgeBase Fri, 23 Apr 2010 18:59:19 GMT What does it mean that the ROBOLAB 2.9 firmware is "100 times faster" than the old firmware? http://www.legoengineering.com/knowledgemanager/questions/151/ Firmware is the RCX or NXT operating system software. It is to your RCX or NXT what Microsoft Windows, Apple Macintosh, or any flavor of Linux is for your PC or Mac. Thus, it runs in the backgroun ... LEGOengineering KnowledgeBase Fri, 23 Apr 2010 18:57:20 GMT Which activities should I use first in my classroom? http://www.legoengineering.com/knowledgemanager/questions/135/ First, make sure that your students have mastered sturdy LEGO building techniques. To bring everyone to a similar level of building confidence, it is a good idea to start with the learning sequen ... LEGOengineering KnowledgeBase Fri, 23 Apr 2010 18:55:58 GMT The program that runs on my RCX robot is not the one I downloaded. http://www.legoengineering.com/knowledgemanager/questions/37/ Your program may be getting written over when someone else downloads to their RCX. Try to keep other RCX towers from pointing toward your workstation. If the problem is persists, cover the IR tra ... LEGOengineering KnowledgeBase Fri, 23 Apr 2010 18:53:33 GMT How do I find my program on the NXT? http://www.legoengineering.com/knowledgemanager/questions/21/ To run your program on the NXT, select My Files, Software files and then select your program. If you wrote your program in ROBOLAB the default file name is rbl. If you used the Begin NXT icon to ... LEGOengineering KnowledgeBase Fri, 23 Apr 2010 18:53:18 GMT How do you program in ROBOLAB with an NXT rotation sensor in ports A-C? http://www.legoengineering.com/knowledgemanager/questions/5/ With the NXT, the rotation sensors are built into the motors, so they connect to the brick through ports A-C instead of ports 1-4. There are special icons in ROBOLAB to use when programming with ... LEGOengineering KnowledgeBase Fri, 23 Apr 2010 18:52:54 GMT