 | | Re: train precision
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(...) hi Steve, I think the problem is not exactly the same. The lego technic motors run always at the same speed so you need to use that kind of schema for speed control in robots. The train motors are different, they have a speed proportional to (...) (19 years ago, 29-Dec-05, to lugnet.robotics.rcx.legos)
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| | Re: train precision
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(...) Daniel, One problem you'll run into with most software is that it switches between power and float to adjust the motor levels. It works much better to switch between power and brake. Using most software, the train will continue to speed up, (...) (19 years ago, 27-Dec-05, to lugnet.robotics.rcx.legos)
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| | train precision
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A couple of years ago, i used brickOS. Then, i changed to Lejos... I have a moc where i use the RCX to control a train with a lego train motor. It is difficult to control the train with LejOS, because it only has 8 output levels. Two solve the (...) (19 years ago, 27-Dec-05, to lugnet.robotics.rcx.legos)
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| | earlier version of binutils?
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Hi, I have been trying to get brickos to compile on my linux machine. I followed the instructions here: (URL) used binutils version 2.16.1, and gcc version 4.0.2. The cross compile seemed to work. However, when I try to compile brickos, I get the (...) (19 years ago, 22-Dec-05, to lugnet.robotics.rcx.legos)
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| | Re: avoid messaging
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(...) I'd agree that a physical block is the easiest, although there is a software solution. The RCX can not recieve a command while it's transmitting - so if you saturate the transmitter with things to do, it will not be able to "look" for any (...) (19 years ago, 5-Dec-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.legos)
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| | RE: avoid messaging
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Yes, I indeed have an attachment which will act like blockage, but not a full one though. Sounds like this is the fastest and easiest to do. I fully understand the opcodes concept, as I myself wrote compile code before. However, these kids age only (...) (19 years ago, 5-Dec-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.legos)
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| | Re: avoid messaging
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(...) If you have an event waiting for a message, I doubt it will have much impact on the speed of the rest of the program. However, this will not catch the messages you're looking for. You can't use the "mail" function to receive op-code, such as (...) (19 years ago, 5-Dec-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.legos)
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| | avoid messaging
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Hi In order to avoid unwanted interruption, such as remote shutdown, from other RCX during execution time, I wonder if the only thing can be done to safe-guard my RCX will be having an independent task dedicated to receive message (mail). This, of (...) (19 years ago, 5-Dec-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.legos)
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| | using rotation sensor
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Most of you are aware of the speed of the robot often causes parity in distance via the feedback of rotation sensors because of inertia. In our experiment, even with a robot with moderate speed. The parity seems to often occur right at the beginning (...) (19 years ago, 30-Nov-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.legos)
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| | rack & pinion, & subvis
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My club children, age 11 to 14, just started to make a writer... This is different from what is in the Ferrari's book. The one we are attempting to build is to load the pen into the center of the construction. RCX is sitting on a mobile chassis. (...) (19 years ago, 26-Nov-05, to lugnet.robotics.rcx.legos)
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| | Re: use RCX with the lego set 4095
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(...) That would require extensive redesign, as the 4095 unit also contains the motors in a compact unit... Philo BTW: imho 4095 is not worth buying (main unit is close to useless) unless you get it at a very low price! (19 years ago, 25-Nov-05, to lugnet.robotics.rcx.legos)
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| | use RCX with the lego set 4095
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I wonder if anyone has experience with this set. The description on the lego site is not clear enough for me to determine whether I can replace the body with the RCX... Thanks! ---...--- -------- Elizabeth (19 years ago, 24-Nov-05, to lugnet.robotics.rcx.legos)
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| | brickOS on Mac OS X
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Hello, I'm trying to get a recent brickOS (0.9.0) working on Mac OS X 10.4.3. I have an RCX 2.0 with the USB tower. I have a cross-compiler (gcc 3.2.2) that apparently works, and using the firmware download program included with lejOS (specially (...) (19 years ago, 22-Nov-05, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx)
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| | problems with lnp+brickos+cygwin
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Hi everybody: I have installed and BrickOS 0.9.0 and Cygwin, since my machine uses Windows XP Home Edition. I have downloaded lnpd 0.9.0, but I have problems when installing this package. I run ./configure and everything seems ok, but when I try the (...) (19 years ago, 21-Nov-05, to lugnet.robotics.rcx.legos)
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| | dllx problems, with lnpd 0.9.0
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Hi, I'm having problems getting dllx to work. I expanded the lnpd 0.9.0 zip file from sourceforge. I did ./configure and make with no problems or error messages. Now, I run lnpd with "lnpd --nolock". Then I do "dllx test.lx" and the green light on (...) (19 years ago, 13-Nov-05, to lugnet.robotics.rcx.legos)
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| | Re: pre-releases brickos-0.9.0/lnpd-0.9.0 avail. for testing/feedback
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Hi, I'm having problems getting dllx to work. I expanded the lnpd 0.9.0 zip file from sourceforge. I did ./configure and make with no problems or error messages. Now, I run lnpd with "lnpd --nolock". Then I do "dllx test.lx" and the green light on (...) (19 years ago, 13-Nov-05, to lugnet.robotics.rcx.legos)
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| | Re: error in using brickOS under Bricx Command Center
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(...) I tried with both 0.2.6 and 0.9.0 (...) I am sorry for imprecise expressions. I meant that I followed your suggestions. But the result was the same as before. (...) I didn't try yet. (...) I am able to use brickos under command prompt as well (...) (19 years ago, 31-Oct-05, to lugnet.robotics.rcx.legos)
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| | Re: error in using brickOS under Bricx Command Center
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(...) 1. What version of brickos do you have installed? (cat VERSION from the brickos root directory and post the output) 2. What do you mean by "Of course I did in vain."? Be as precise as possible in your answer. With a correctly installed copy of (...) (19 years ago, 19-Oct-05, to lugnet.robotics.rcx.legos)
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| | Re: error in using brickOS under Bricx Command Center
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(...) As I said before, I am able to use brickOS under cygwin. Does this mean that I have files required by brickOS? I guess you don't mean that I have to run the two commands: make realclean make (Of course I did in vain.) Je-Young Choi (19 years ago, 19-Oct-05, to lugnet.robotics.rcx.legos)
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| | Re: error in using brickOS under Bricx Command Center
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(...) I have dug around a bit on my computer and I managed to duplicate your problem. If I do a make realclean from the brickOS root directory: C:\cygwin\brickos>make realclean [lots of output delete] then when I run make -f helloworld.mak I get the (...) (19 years ago, 18-Oct-05, to lugnet.robotics.rcx.legos)
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