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 | | Re: frame RCX reply how
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| (...) Bingo! I reached the bricktools/ of the frame-free: (URL) bytes At a glance, I missed how bricxcc toggles x08 in the command op to let command ops be repeated, but I'd now guess the bricxcc algorithm for framing standard RCX replies is: 1) (...) (22 years ago, 1-Feb-03, to lugnet.robotics.rcx)
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long
(score: 0.368)
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| | Re: My RCX doesn't work!
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| I had the same Problem with my cybermaster after I took a new battery for the tower (no accu !) it worked fine again. Stefan (...) -- ***...*** Dipl.Inf. (FH) Stefan Prescher Fachhoschchule Oldenburg/Ostfriesla...helmshaven Fachbereich E+I / (...) (24 years ago, 23-Feb-01, to lugnet.robotics.rcx)
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tower
(score: 0.368)
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| | Re: Float and int
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| (...) int is 16 bits, big endian, signed. It goes from -32768 to 32767. unsigned int goes from 0 to 65535. char is 8, long is 32, long long is 64, with the standard limits. Floats and doubles are emulated in software, as the H8/300 processor has no (...) (22 years ago, 30-Dec-02, to lugnet.robotics.rcx.legos)
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long
(score: 0.368)
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| | Just some really basic questions...
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| Okay, I'm really new to the whole NQC thing and have visited Amazon and ordered a couple books, but I've got some rather high level, I guess for lack of a better term, questions... I can store up to three program in my RCX. Correct? What's the best (...) (24 years ago, 29-Jan-01, to lugnet.robotics.rcx.nqc)
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ir
(score: 0.367)
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| | Remote Control
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| Hi there,I live in South Africa where it is difficult to obtain Mindstorms products. Can anyone help with a circuit diagram of the Remote Control unit so that i can build mty own. I have tried teaching a Learnable remote control from th tower but it (...) (24 years ago, 17-Feb-01, to lugnet.robotics.rcx)
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tower
(score: 0.367)
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| | Re: Sensor Sampling; Progress?
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| The Lego firmware cuts power for about 200uS, with a period of 3mS. So most sensors have to have enough capacitor based power storage for the full 200uS and be able to run on about 93% duty cycle. (The rotation sensor is one of the devices on the (...) (22 years ago, 19-Jan-03, to lugnet.robotics.rcx.legos)
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long
(score: 0.366)
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| | Re: Sensor Sampling; Progress?
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| (...) Yes. (...) individually (...) That's right. (...) I agree. With the current firmware, power gets cut off to all 3 sensors for ~85us (sometimes longer). With the scheme I mentioned, power would be cut to only one sensor for ~25us. The sample (...) (22 years ago, 19-Jan-03, to lugnet.robotics.rcx.legos)
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long
(score: 0.366)
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| | Re: Interesting BrickOS Timing Results
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| (...) The delay was added a long time ago after a bit of discussion on this newsgroup/list. A search through old newsgroup posts will turn up a brief series of three posts with subject "Rom sensor read routine" from Apr/May 1999. The explanation (...) (22 years ago, 15-Jan-03, to lugnet.robotics.rcx.legos)
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long
(score: 0.366)
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| | Re: Interesting BrickOS Timing Results
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| (...) I forgot to mention... This is *almost* the same as moving some of the subsystem code into a seperate high priority task. For example, LCD refresh code is executed in the 1ms timer ISR. It really doesn't need to be in the ISR. It can do it's (...) (22 years ago, 15-Jan-03, to lugnet.robotics.rcx.legos)
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long
(score: 0.366)
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| | Re: LegOS 0.2.5 and LNP
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| (...) I cleaned up my code (found one bug!), the patch follows. As you may see now there are two semaphore, because two are the resources to give access to: the LNP buffer and the IR port. I modified the calling of the handlers to avoid race (...) (24 years ago, 20-Jan-01, to lugnet.robotics.rcx.legos)
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ir
(score: 0.366)
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| | Interesting BrickOS Timing Results
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| Hi All, The recent posts about interfacing an i2c device to an RCX sensor port (in .robotics) got me interested in looking at the kernel code that handles the sensors. So, I did and found myself looking at the ds_handler function. This function is (...) (22 years ago, 14-Jan-03, to lugnet.robotics.rcx.legos)
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long
(score: 0.366)
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| | RCX analog input?
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| I haven't been reading any of the LUGNET robotics groups until a month or so ago when I bought my first Mindstorms 1.5 kit and entered into this branch of LEGO. (so sorry if this has been posted before and I haven't seen it in any FAQ's) My question (...) (24 years ago, 27-Jan-01, to lugnet.robotics.rcx)
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range
(score: 0.366)
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| | Re: LegOS 0.2.5 and LNP
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| (...) Btw. README is (...) Ooops... :-) Changed to 0.2.5 version inside. (...) transport (...) packets of (...) mainly as way for (...) collisions, lost (...) which works as (...) write code to (...) To cut time (...) code that (...) directives (...) (24 years ago, 17-Jan-01, to lugnet.robotics.rcx.legos)
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ir
(score: 0.365)
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| | LegOS 0.2.5 and LNP
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| Yesterday I downloaded legOS 0.2.5 and peeked at the code. Btw. README is not up to date. For last two month I was working with a friend of mine on a transport protocol implemented on top of LNP for the transmission of packets of unlimited size and (...) (24 years ago, 17-Jan-01, to lugnet.robotics.rcx.legos)
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ir
(score: 0.365)
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tower
(score: 0.365)
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| | Re: Motor Speed value interpretation?
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| (...) As far as I can tell, the speed value really affects power output. This indirectly affects speed, but not in a very happy way. You end up with a wide range of values that give you nearly the same speed, then a very short range that decreases (...) (24 years ago, 23-Jan-01, to lugnet.robotics.rcx.legos)
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range
(score: 0.365)
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| | Re: Lght Sensor & Three colors?
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| Matthew Fisher <matthew.fisher@bigfoot.com> wrote in message news:G78nAy.D0A@lugnet.com... (...) The LEGO light sensor is based on a silicon photo transistor. It really doesn't "see" the colors we do. It is sensitive to the near IR. That said, I'd (...) (24 years ago, 16-Jan-01, to lugnet.robotics.rcx)
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ir
(score: 0.365)
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| | Re: RCX controlling minidisc player
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| (...) Yes, it seems a lot of Minidisc players do anyway. (...) This really is how they do it. If you go here you can see the schematic for a Sony remote: (URL) go here and scroll down to the section titled "Portable's Remote Control Interface", you (...) (24 years ago, 16-Jan-01, to lugnet.robotics.rcx)
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ir
(score: 0.365)
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| | LNP Help
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| Hey, I am trying to get my computer to talk to 2 rcxs. I have the program and when I send ir messages to the RCX loaded with LegOS, it shows the IR port on. However I do not understand what the packets should look like with the intergrity layer. (...) (24 years ago, 13-Jan-01, to lugnet.robotics.rcx.legos)
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ir
(score: 0.365)
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| | Re: Anyone using Mac beige G3
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| (...) I've had similar problems with a CyberMaster. It seems that CyberMaster Tower is powered by the serial interface (at least it is switched on by this power). On PC, the DTR line is switched high (12 V), and the CTS line is switched low (-12V). (...) (24 years ago, 1-Feb-01, to lugnet.robotics.rcx.nqc)
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tower
(score: 0.364)
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