 | | Re: Windows NT Success Story!
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Thanks a lot for this really helpful and detailed post! Especially thanks for making the result of your success story available for download. This allowed me to simply download the whole thing and start experimenting with legOS applications rather (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx.legos)
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| | RE: LNP Example please
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I have observed the same behavior... only by night. I think it must be the tower receiving echoes of its own packets. The sollution: place the tower far away from objects that can reflect light (including yourself). I also changed the tower battery (...) (25 years ago, 12-Feb-00, to lugnet.robotics.rcx.legos)
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| | RE: Drive R/C Servos with the RCX and pbForth (long)
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(...) I should add here that no external power source is necessary to drive the servo. This is important since a micro or miniservo and an SMT version of the driver can be made to fit INSIDE a space similar to a worm gear box (6588 in LDraw). I'm (...) (25 years ago, 12-Feb-00, to lugnet.robotics, lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | RE: Drive R/C Servos with the RCX and pbForth (long)
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(...) No, the servo needs power to the + and ground terminals to drive the motor to the setpoint indicated by the signal wire. If I don't invert the signal there is no power for about 30msec and only 1 or 2 msec ov voltage on the motor port. By (...) (25 years ago, 12-Feb-00, to lugnet.robotics, lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | Re: Drive R/C Servos with the RCX and pbForth (long)
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(...) If you're using a custom motor driver in pbForth, why use the inverter circuit at all? Why not just generate the desired waveform directly? Is there not enough current to drive the servo that way? --Ben (25 years ago, 12-Feb-00, to lugnet.robotics, lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | Re: Having trouble with -D option
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Thanks for the quick response. "It's fixed in the next release, which is due in a week or so" qualifies for excellent support, IMHO. :) My workaround is a REXX exec rewritting a small header file on the fly before each compile. -- Mark Haye, haye (...) (25 years ago, 12-Feb-00, to lugnet.robotics.rcx.nqc)
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| | Re: Having trouble with -D option
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Yes, I noticed that too, but I'm trying to program multiple RCXs with the same source, and the symbol is meant to represent the RCX's id, so it must have multiple values. Thanks anyway for the quick response. -- Mark Haye, haye (at) us (dot) ibm (...) (25 years ago, 12-Feb-00, to lugnet.robotics.rcx.nqc)
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| | Drive R/C Servos with the RCX and pbForth (long)
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Hi again everyone! A few days ago I announced that I had developed a nice little circuit using easily available parts that would let you connect servos to the RCX - with no external batteries or microprocessors or anything! At that time, I said that (...) (25 years ago, 12-Feb-00, to lugnet.robotics, lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | Re: scout.nqh no longer necessary?
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(...) Correct. Initially (2.1 b1) I put the Scout support in a separate include file because I wasn't ready to merge all of the changes together. As of b2, the compiler's built-in system include file includes RCX, Cybermaster, and Scout APIs. Dave (25 years ago, 12-Feb-00, to lugnet.robotics.rcx.nqc)
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| | Re: LNP Example please
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*Embarrased look* sorry I shouldn't of missed that.. Sorry to hassle you but I am stuck yet again. The lnptest program just records collision after collision. I have no other IR devices in the area (as far as I know anyway) It doesn't display any of (...) (25 years ago, 12-Feb-00, to lugnet.robotics.rcx.legos)
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| | Re: scout.nqh no longer necessary?
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(...) Yes, this is true as of 2.1.b2. (25 years ago, 11-Feb-00, to lugnet.robotics.rcx.nqc)
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| | scout.nqh no longer necessary?
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It looks like Scout programs no longer need `#include "scout.nqh"', and the file has been removed from the NQC beta distribution. Is that correct? I've been confusing someone new to NQC because I didn't realize this :( --Ben (25 years ago, 11-Feb-00, to lugnet.robotics.rcx.nqc)
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| | Re: Having trouble with -D option
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You found a bug - NQC is actually defining D to be the tokens =1, which then leads to a lot of confusion later on. Basically I bungled the pointer math. I fixed the source so the next release (2.1 final) should be fine. I'll probably release 2.1 in (...) (25 years ago, 11-Feb-00, to lugnet.robotics.rcx.nqc)
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| | Re: Having trouble with -D option
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(...) Same with 2.1b3. FWIW, #ifdef D task main() {} #endif works as expected. D is getting defined, just not to 1. (Or to any number.) (25 years ago, 11-Feb-00, to lugnet.robotics.rcx.nqc)
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| | Having trouble with -D option
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If I compile this program (named d.nqc): /* nqc program */ #if (D == 1) task main() {} #endif with the command: nqc -DD=1 d.nqc I get the following error: # Error: syntax error in expression File "d.nqc" ; line 2 # #if (D == 1) # ^ #---...--- # 1 (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx.nqc)
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| | Re: static version of lnpd uploaded to arthudent
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(...) Should be up now. Sorry about the delay- I haven't been home in slightly over 24 hours :) -Luis ###...### Profanity is the one language that all programmers understand. -Anonymous ###...### (25 years ago, 10-Feb-00, to lugnet.robotics.rcx.legos)
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| | Re: How much memory finally?
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Here's the latest update. Hope we will get a clear picture of this #@$@ memory after all. The point is that the RCX processor can address 64k of memory, so let's divide this range into 4 equal area of 16k. (note:16k or 16384, in hex is 0x4000). (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
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| | Re: How much memory finally? ADDENDUM
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I have seen some systems that have RAM set up this way: The first area is for the system, the second area is user programs and is allocated from the bottom up. The third area is user (and system) data, allocated from the top down. They "meet in the (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
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| | Re: How much memory finally? ADDENDUM
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Hey, that's a pretty nice idea! Any volunteer? D. (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
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| | Re: How much memory finally? ADDENDUM
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I haven't seen anyone talk about hacking a memory expansion (hardware) yet. Dennis (...) -- Dennis Williamson - Certified Y2K Complacent Bad News: The next millenium starts on a Monday. Good News: You get the day off. (remove .NO and SPAM. to reply) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
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