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 | | Another way to avoid Float
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| For the navigation of my robot, I do not plan to use float or trig function. I will use long integer (32bits). the high 16 bit are the true integer value. the low 16 bits are 1/65535 value. let say 1 = 0x00010000 2 = 0x00020000 2.5 = 0x00028000 2.25 (...) (24 years ago, 19-Jan-01, to lugnet.robotics.rcx)
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range, long
(score: 3.283)
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| | Re: Help with 9738 LEGO Mindstorms Remote Control
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| I just got one myself and it seems to work fine. The A, B, and C buttons turn on the motors (in either direction) as long as they are held. You can even hold multiple buttons down to turn more than one motor at the same time. The Message buttons (1, (...) (25 years ago, 11-Jul-99, to lugnet.robotics.rcx)
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range, long
(score: 3.283)
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range, long
(score: 3.283)
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| | RE: time sampling under the rcx standard OS
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| Here are some comments on how to improve your code for real-time performance. 1. Move the "SetUserDisplay" out of the loop and put it just before the loop. 2. I think the "OnFwd" macro is actually two instructions: "Fwd" and then "On". Replace this (...) (19 years ago, 17-Sep-05, to lugnet.robotics.rcx.nqc)
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range, long
(score: 3.282)
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| | malloc() bug found -- BAD MEMORY REGION :-(
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| It looks like it's not a bug in legOS, but in the RCX hardware: Memory from 0xfb80 to 0xfd7f is simply NOT WRITEABLE, or more exactly, always read as 0xff, at least on my RCX ! Try the following little test: // // memory test // #include <conio.h> (...) (25 years ago, 1-Mar-00, to lugnet.robotics.rcx.legos)
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range, long
(score: 3.282)
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| | Re: BrickOS Patches and Development
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| (...) Case in point: when I first started on this post some weeks(!) ago, hoenicke.ath.cx wasn't responding. (...) And it's not getting easier if we've collected different sets of patches and then make further changes based on those... So yeah, we (...) (16 years ago, 31-Mar-09, to lugnet.robotics.rcx.legos)
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range, long
(score: 3.282)
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| | Black
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| Since I am currently working on line following, I did some tests with the Lego active light sensor. I mounted one on a small test cart pointing down a bit more than 1/8 inch above the "ground". The 1.5 test pad reads white 57 black 38 green 46 I (...) (25 years ago, 28-Jan-00, to lugnet.robotics.rcx)
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range, long
(score: 3.282)
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| | Interests in non-GNU C compiler for RIS?
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| I know most lego alternative SW seems to be Open Source, but please don't flame me for asking this question - ImageCraft is a company that provides low cost C compilers for 8/16 bit microcontrollers such as Atmel AVR, Moto HC11/12/16. While not Free (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx)
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range, long
(score: 3.282)
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| | Rom sensor read routine
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| In writing some sensor code yesterday/today (it's 6 am), I passed over the ROM sensor code at 14c0. The documentation has been put in the usual place. The rotation code is pretty simple: the expected state machine, with split points between the four (...) (25 years ago, 25-Apr-99, to lugnet.robotics.rcx.legos)
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range, long
(score: 3.282)
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long, tower
(score: 3.276)
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| | Re: RCX Tower Internals
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| (...) I'm pretty sure the echo is not direct, it goes out through the emitters and back into the receiver. This is demonstrated by varying the lighting conditions and/or the baud rate and noting the response. If the echo were direct, you'd receive (...) (25 years ago, 10-Jun-99, to lugnet.robotics.rcx)
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long, tower
(score: 3.276)
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| | Re: BricxCC & fast firmware download
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| (...) Slow mode with the serial tower definitely was broken in BricxCC for a really long time because nobody ever reported to me that it was broken until about 2 or 3 weeks ago. I apologize for not noticing this problem on my own. Unfortunately, it (...) (21 years ago, 4-Nov-03, to lugnet.robotics.rcx)
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long, tower
(score: 3.274)
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| | Painful details on RCX.pm problems
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| More RCX.pm stuff in case John Quillan (to whom I'll be forever indebted, if this ever works) shows up. So I have this code: #!/usr/bin/perl use LEGO::RCX; my $rcx = new LEGO::RCX(); $rcx->ping(); $k = 0; while($k ne 10) { print($k.") (...) (24 years ago, 6-Nov-00, to lugnet.robotics.rcx)
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long, tower
(score: 3.273)
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| | RE: The pain of communicating with the RCX
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| (...) Good. I'm glad your on-side so far :-) (...) You are right. I have found that getting a reliable connection is very dependent on ambient light, the voltage of the RCX batteries, and the tower itself. Try to use the tower in NEAR mode so that (...) (25 years ago, 9-Mar-00, to lugnet.robotics.rcx.pbforth)
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long, tower
(score: 3.273)
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| | dllx for liblnp+lnpd uploaded to arthurdent
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| Hello, i finally managed to get my old 486 back to live and build a little home network to test lnpd & liblnp in a networked environment. As expected ;-), it works perfectly -- with 2400 baud 8-(. Running with 4800 baud, i encountered some (...) (25 years ago, 7-Jan-00, to lugnet.robotics.rcx.legos)
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long, tower
(score: 3.273)
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| | transfer data failed
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| Hi there, I use legOS 0.2.4 under Linux and tried (after a few weeks) to download the firmware and get always the follwing error: firmdl3/firmdl: transfer data failed Batteries are brand new, tower was set to short and long dist. nothing helped ... (...) (23 years ago, 6-Aug-01, to lugnet.robotics.rcx.legos)
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long, tower
(score: 3.272)
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| | Re: New TLC Mindstorms survey
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| (...) It might be a long shot - but I am gonna ask for more sensor/motor ports and external power in/out lines. I always thought the active sensor thing was over complicated for any custom sensors. Since they pose the "what would you consider (...) (20 years ago, 17-Jun-04, to lugnet.robotics.rcx)
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long, tower
(score: 3.272)
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long, tower
(score: 3.272)
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long, tower
(score: 3.272)
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long, tower
(score: 3.271)
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