 | | Strange BrickOS Timing
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Hello out there, maybe someone can explain to me why the current brickOS release seems to have msleep()-amnesia ;-) We've been testing the data transfer to our Lepomux device. For some strange reason we were still using kernel 0.2.6.07nmChg with a (...) (21 years ago, 2-Dec-03, to lugnet.robotics.rcx.legos)
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| | Re: GP2D12 Please help
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Hi Sebastian, (...) I don't know the schematics of that sensor interface, but I think it's basically a bad idea to drive a device that needs 30 to 50 mA from a powersource that can only output about 10 mA. I've experienced similar effects while (...) (21 years ago, 2-Dec-03, to lugnet.robotics.rcx.legos)
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| | Re: NQC's future
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(...) I am happy to help out as best I can. Unfortunately, there is little chance that I will do as good a job as Dave Baum has done over the years. But I'll try my best. (...) Yes. When I can find the time. I'm also trying to find the time to do a (...) (21 years ago, 2-Dec-03, to lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | Re: Broken Mindstorms motors
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(...) Call "LEGO Shop at Home" and get four replacement motors. I just called them about a broken motor and a broken "pneumatic double acting cylinder". I called them pistons, but when she finally found them in 8455, she made sure I knew they were (...) (21 years ago, 2-Dec-03, to lugnet.robotics.rcx)
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| | Re: NQC's future
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In lugnet.robotics.rcx.nqc, John Hansen wrote: John, thanks for taking on the maintenance and improvement of NQC. (...) I'd definitely like to see this one implemented, when you can find the time. :-) Mark (21 years ago, 2-Dec-03, to lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | NQC's future
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I'm very interested in hearing from NQC users what their needs/wishes are for future enhancements. Here's my current list of updates/enhancements that I am working on. 1. Built-in and documented Spybot API. 2. Fast firmware download via USB tower (...) (21 years ago, 2-Dec-03, to lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | Broken Mindstorms motors
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We have several broken mindstorms motors. Tw got the shafts broken. Two just stopped turning. So, we decided to steal the shafts from one set to fix the other set. However, putting them back together has stopped the working but shaftless ones from (...) (21 years ago, 2-Dec-03, to lugnet.robotics.rcx)
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| | Re: failure in communicaton between RCX & IR Tower
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Nathan, I have done this trouble shooting step, ie. changing the timing. Unfortunately, it did not work. But, thank you though. Well, the a W2Kpro virtual machine approach did not work either... I guess my only alternative will be getting the (...) (21 years ago, 1-Dec-03, to lugnet.robotics.rcx.robolab)
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| | Re: Opening COM port error
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(...) Tyler, Happy to be of help! Regarding Garbage Collection, I'm not usually one to criticise without being able to suggest a better alternative. In this case, I think most GC systems could be improved by mimicking the concept of "smart pointers" (...) (21 years ago, 30-Nov-03, to lugnet.robotics.rcx.java, lugnet.off-topic.geek)
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| | Re: "Non-Robolab" LabView functions
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(...) Disagree. It's a matter of habitudes. Once you're familiar with the whole environment, you may write extremely complex programs without getting lost. For example, in our recent "Mars-mission" telerobotics project the complete programming -the (...) (21 years ago, 30-Nov-03, to lugnet.robotics.rcx.robolab)
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| | Re: Robolab, byte codes and assembler
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(...) They do work! But they are usually used with two quadrature outputs (hence the name), while on RCX only one wire is used and the 4 states are encoded as 4 voltages levels. (URL) (Image courtesy Michael Gasperi) The sequence (clockwise) is (...) (21 years ago, 30-Nov-03, to lugnet.robotics, lugnet.robotics.rcx.robolab, FTX)
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| | Re: Robolab, byte codes and assembler
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(...) The way I understand it, it's really not the sensor's fault. The RCX and firmware together either can't or doesn't deal with the ambiguous voltage levels sometimes returned during two of the four transitions. If the RCX were fast enough that (...) (21 years ago, 30-Nov-03, to lugnet.robotics, lugnet.robotics.rcx.robolab)
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| | Re: Robolab, byte codes and assembler
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Could someone explain to me technically why this sort of of problem with the rotation sensor occurs? I know how quadrature shaft encoders are _supposed_ to work, and I can't see why this sort of thing should happen in the first place. >> Mark (21 years ago, 30-Nov-03, to lugnet.robotics, lugnet.robotics.rcx.robolab)
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| | Re: "Non-Robolab" LabView functions
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(...) Still waiting to hear from Dick about that. (...) I disagree that it's easier to understand and use. Possibly easier to learn or figure out without documentation, up to a point. But ease of learning is not the same as ease of use. Graphical (...) (21 years ago, 30-Nov-03, to lugnet.robotics.rcx.robolab)
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| | Re: "Non-Robolab" LabView functions
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(...) ---...--->snip I've not had the time yet to analyze the patch. Seems that you replace the first firmware handler. In Robolab the firmware is found under ..ROBOLAB\Engine\RCX1\Text. They simply have changed the extension .lgo to .txt and call (...) (21 years ago, 30-Nov-03, to lugnet.robotics.rcx.robolab)
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| | WTF: Broken RCX units
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Anyone have or know where I can find broken RCX units for parts? Thanks, Rand (21 years ago, 30-Nov-03, to lugnet.robotics.rcx)
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| | Re: Opening COM port error
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In lugnet.robotics.rcx.java, Chris Phillips wrote: Hahaha, Your passionate condemnation of GC makes entertaining reading in light of the amount of work I have to do with lejos,Java,C++, etc for my final year undergraduate project. I will certainly (...) (21 years ago, 30-Nov-03, to lugnet.robotics.rcx.java)
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| | Re: Patched firmware to improve rotation sensor, was Re: Robolab, byte codes and assembler
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(...) It took me some time to figure out why, but you are right, the ambiguous transitions occur only while counting up. What you could do though would be to count +1 while going from state3 to state2_ambiguous, and correct "phantom transition" by (...) (21 years ago, 30-Nov-03, to lugnet.robotics, lugnet.robotics.rcx.robolab)
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| | math library
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Hello all. About a year ago I researched math functions so I could write some for the RCX. I found some power series functions that work really well. I see another message here posted by "nanobapt" has also posted some functions so I tested his (...) (21 years ago, 29-Nov-03, to lugnet.robotics.rcx.legos)
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| | "Non-Robolab" LabView functions
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I've been experimenting with some of the LabView icons available in "Investigator" mode in Robolab (under the "hourglass" item on the outermost menu). They seem to cause some odd behavior sometimes. It seems like it's especially a problem if one of (...) (21 years ago, 30-Nov-03, to lugnet.robotics.rcx.robolab)
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