 | | HOWTO: Building and installing brickOS tools on Mac OS X with USB IR tower
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Hi all, I just finished compiling and installing a cross-compiler and brickOS to my RCX from my PowerBook with Mac OS X Tiger 10.4.3 and a USB IR tower. Here's a blog posting about my experience: (URL) that I was able to install brickOS to my RCX (...) (18 years ago, 8-Jan-06, to lugnet.robotics.rcx.legos)
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| | Controlling RoboSapien & family from RCX
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Hi, It appears to be straight-forward to control the WowWee robots from RCX and generate their IR commands by controlling the TxD output pin of the RCX's processor. More info, small webcam video, and simple example source: (URL) opens up for a lot (...) (18 years ago, 7-Jan-06, to lugnet.robotics.rcx.legos)
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| | The NXT generation version
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from the lego press release... ...The heart of the new system is the NXT brick, an autonomous 32-bit LEGO microprocessor that can be programmed using a PC, or for the first time in the retail offering, a Mac. After building their robots, users (...) (18 years ago, 5-Jan-06, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.legos)
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| | The NXT generation version
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Approved: emabrey@storming-robots.com from the lego press release... ...The heart of the new system is the NXT brick, an autonomous 32-bit LEGO microprocessor that can be programmed using a PC, or for the first time in the retail offering, a Mac. (...) (18 years ago, 5-Jan-06, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.legos)
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| | the new MINDSTORMS NXT
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Hi everyone, Wonder if anyone knows much about the NXT. Exciting addition, but I am concerned with the software compatibility with the future Robolab 3.0. From what I understand, beta Robolab 3.0 only is underway for Mac platform. How about the (...) (18 years ago, 5-Jan-06, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx.robolab)
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| | Re: earlier version of binutils?
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(...) Hi again, I've got it working now, thanks to help from Jochen Hoenicke and Peter Gammie. I've posted my notes on the process here, if anyone is interested: (URL) now I've got a new problem... Everything was working great for about a day, but (...) (18 years ago, 31-Dec-05, to lugnet.robotics.rcx.legos)
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| | Re: train precision
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(...) Yes, I used the same code for controlling Legway as the Great Ball Contraption train. That's what I posted here: (URL) (19 years ago, 29-Dec-05, to lugnet.robotics.rcx.legos)
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| | Re: train precision
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(...) didn't find the c code in the url you mentioned. You used the same technique in the train, as in the legway? daniel (19 years ago, 29-Dec-05, to lugnet.robotics.rcx.legos)
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| | Re: train precision
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(...) thanks for the suggestion, Brian I want to make some experimences with LDCC some day. But not in this project. daniel (19 years ago, 29-Dec-05, to lugnet.robotics.rcx.legos)
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| | Re: train precision
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(...) ... (...) ... (...) ... (...) As Brian said, it's not the motors, it's the RCX. You can run Technic motors off a train controller, and you can vary the speed. But you need to do a bit more if you're using the RCX. We used that scheme when we (...) (19 years ago, 29-Dec-05, to lugnet.robotics.rcx.legos)
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| | Re: train precision
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I do think Steve is on the right track here. The train regulator varies the voltage, but the RCX output can't. So you are left with managing (nominally) 9v pulses. But there is another solution. You could add a DCC decoder to your train motor, and (...) (19 years ago, 29-Dec-05, to lugnet.robotics.rcx.legos)
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| | 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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