 | | Re: power levels clarification
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Hi Elizabeth, (...) there is an 8ms cycle, and the motor is on for a part of that: 1ms for power level 0, 2ms for power level 1, up to all the 8ms for power level 7. The rest of the time the motor is floating, i.e. the motor inputs are disconnected, (...) (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | RE: power levels clarification
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Thank you very much for your clarification. Any suggestion on reading material about PMW for high school kids. -- Elizabeth -----Original Message----- From: news-gateway@lugnet.com [mailto:news-gateway...ugnet.com] On Behalf Of Thomas Johnson Sent: (...) (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | Re: power levels clarification
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(...) PWM--Pulse Width Modulation. Basically, during a cycle, power is turned on and off. The lengh of time the power is on is the pulse width. Longer pulse widths corispond to higher power levels. This cycling is supposed to happens fast enought (...) (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | Re: power levels clarification
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(...) PWM - pulse width modulation of the electric current going to the motors. CS (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | power levels clarification
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Hi I am curious how the power levels are being implemented. I am not talking about the icon level navigation. How the motor actually adjusts to the different levels setting? Gear slipping? Thanks in advance... -- Elizabeth (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | ECRobot with MATLAB 7
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Hi, in a student research project I got the ECRobot target of the Real Time Workshop in MATLAB 7 working. So it is possible to run a closed loop from Simulink via automatic sourcecodegeneration on the Brick. Detailed instructions in german and a (...) (20 years ago, 1-Mar-05, to lugnet.robotics.rcx)
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| | Re: Problems with Brixcc Cygwin
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(...) This error indicates somewhat obscurely that the download did not complete successfully and that the installer is corrupted as a result. You will need to try downloading the file again. A download utility like Net Transport might be worth (...) (20 years ago, 15-Feb-05, to lugnet.robotics.rcx)
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| | Problems with Brixcc Cygwin
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Hi, I'm running Brixcc on Win 98 and, during the installation process of the optional Cygwin installer, a window appers asking me to open a file named BRICXCCSETUPCYGWIN.002 which doesn't exist! Does anyone know what's happening? Thanks (20 years ago, 14-Feb-05, to lugnet.robotics.rcx)
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| | Re: Can the Run button be reprogrammed?
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(...) Ultimate Robolab provides very easy access to the RCX buttons. With a few icons you can reprogram any of them. Here a nice example : (URL) you press the Run-button in this example, you'll here a sweep down system sound. This is the philosophy (...) (20 years ago, 10-Feb-05, to lugnet.robotics.rcx)
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| | Re: Can the Run button be reprogrammed?
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(...) Not to put too fine a point on it, but RUN, PRGM and VIEW are read from an I/O port, while the ON/OFF button is tied to an interrupt line. That's what lets you wake the RCX up from a deep sleep, which you can't do with the other buttons. Ralph (20 years ago, 9-Feb-05, to lugnet.robotics.rcx)
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| | Re: Can the Run button be reprogrammed?
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(...) BrickOS does allow you to configure how the buttons are used. The RUN and Power buttons are read in the BrickOS "firmware", so you'd need to change the kernal, if you want to do other things with them, but it is very possible. So, yes, the run (...) (20 years ago, 9-Feb-05, to lugnet.robotics.rcx)
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| | Can the Run button be reprogrammed?
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I was just wondering, can the Run button on the RCX be reprogrammed? I was thinking of a theoretical, fail-safe system, where it would be nice to run a clean-up routine after the run button had been pressed to stop the program. I reckon you'd have (...) (20 years ago, 9-Feb-05, to lugnet.robotics.rcx)
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| | Re: Sending Commands to Spybot from RCX - Question from a Beginner to Comm area.
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Hi Everybody, I have used SendSpybotMsg and SendSpybotCtrlMessage (of course in connection with resopective set messages) without any problems using BCC 3.3.7.5 and 3.3.7.9. These two commands gives RCX a nice control over spybot. Specially (...) (20 years ago, 8-Feb-05, to lugnet.robotics.spybotics, lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Re: a problem ... need some help !
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(...) Although you may not be using BricxCC to compile your leJOS code I think it might be instructive to describe how BricxCC manages to compile leJOS code properly. The way BricxCC works with leJOS is to create a very simple makefile that launches (...) (20 years ago, 6-Feb-05, to lugnet.robotics.rcx)
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| | Re: a problem ... need some help !
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hi,,, thanks, i just defined JAVAC to where my javac is and its working but there is a small problem that i have to put the java file im compiling in lejos\bin because it doesn't work when i set the CLASSPATH ! i also defined JAVA env var to (...) (20 years ago, 5-Feb-05, to lugnet.robotics.rcx)
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| | Re: a problem ... need some help !
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On the off-chance you might be trying to use lejos with BricxCC here are a few instructions that should get things working. It has been a while since I tried to use lejos with a recent java SDK and it turns out that the pre-built minimal lejos (...) (20 years ago, 5-Feb-05, to lugnet.robotics.rcx)
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| | a problem ... need some help !
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hi everyone, im just starting to work with lego RIS2.0 and Lejos, but i have a problem with the lejos setup i did all the instructions and when i tried to compile a java file using the lejosc command i got this reply: Unable to execute javac. Return (...) (20 years ago, 4-Feb-05, to lugnet.robotics.rcx)
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| | Re: New TLC Mindstorms survey
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(...) I'm not sure what good it'll do if the survey is that old but i took it anyway. BTW hope that release it soon since i''ll soon (i hope) be getting 2.0. I'd hate to get it and then a few months later see 3.0 in the shelfs. (20 years ago, 31-Jan-05, to lugnet.robotics.rcx)
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| | Re: RCX3 - Can extra hardware functionality be added?
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(...) A friend of mine is actually working on this 'pod' concept. i have been playing with a working prototype and i must say that it preforms very well. and it is SO nice to not be limited on the number of sensor inputs. pictures of the prototype (...) (20 years ago, 31-Jan-05, to lugnet.robotics, lugnet.robotics.rcx)
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| | Re: Sending Commands to Spybot from RCX - Question from a Beginner to Comm area.
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(...) First of all, my apologies for not answering you via email. I've been a bit busy at work. I needed to run some tests myself before I could properly respond as well. The 0x9223 from the RCX happens to match the IR sent out by the Spybot (...) (20 years ago, 28-Jan-05, to lugnet.robotics.spybotics, lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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