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 Robotics / RCX / *1060 (-20)
  Re: legOS-0.2.2
 
(...) well, i got it and compiled everything using linux 2.2.13 and glibc 2.01. My native compiler is gcc 2.95.1, for cross compiling i built gcc 2.95.2, after applying the rcx-interrupt patch. compiling the dll and makelx utilities was a little (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx.legos)
 
  Re: Hapless WinNT user
 
Apparently, standard gcc include files are processed as well. This should never happen, as legOS defines everything on its own. Maybe there's an additional command-line switch for that? -Y or something? Good luck, Luis - I have access to a NT box in (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx.legos)
 
  RCX Power connector
 
Hi all, If you still want to get a (second) RCX with a power connector, order online from www.legoworldshop.com. Make sure you order the RIS 1.0. Lego will throw in the upgrade to 1.5 in for free, so you still get the same set. I just got mine. I (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
 
  Re: RCX motor voltage
 
(...) That sounds like a good approach. (...) As I stated before - I'm using the motors that came with the RCX. -Wes (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
 
  Re: RCX motor voltage
 
The simple thing would be to do the short delay in the software. Identical relays usually 'make' faster than they 'break' due to energy stored in the magnetic circuit. It's hard to do this without active components. If you use a typical small (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
 
  Re: Communication with PC using NQC
 
(...) /Vlad (25 years ago, 9-Nov-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
 
  Re: Communication with PC using NQC
 
(...) You might find the following helpful... (URL) again, you might not. jack j-perdue@tamu.edu (25 years ago, 9-Nov-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
 
  RE: Long range IR mode.
 
<Range mode intro snipped> (...) I'd redefine it something like this....use upper case BASE @ HEX \ To keep from evaluating HEX every time... : RANGE_SET ( f -- ) \ non-zero is long, 0 is short >R FFB7 DUP C@ R> IF FFFE AND ELSE 0001 OR THEN SWAP C! (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx.pbforth)
 
  "A cunning plan"
 
I am hoping someone has done some/all of this already... Aims: 1 To develop downloadable RCX code on the PC. 2 To develop immediate RCX code on the PC. 3 To run immediate code on the PC and the PalmPilot. 4 Spirit.ocx functionality. 5 IR comms to (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx.java)
 
  JVM and spirit.ocx
 
Todd. Has anyone done much on this subject? I am looking at writing a class library to communicate/program the RCX from Java and I don't want to reinvent the wheel. I have seen some work on the net, but nothing definitive... Geoff (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx.java)
 
  Re: Communication with PC using NQC
 
(...) Taking the example of the maze-walker, the PC software should be able to keep track of the position of the robot and direct it through the maze. (...) Yes, I looked at the code and it only needs a higher-level wrapper. (...) Yes, it does, (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
 
  Re: Long range IR mode.
 
(...) Just scanned through Kekoka's excellent dissection of the ROM routines. Seems like system variable/register at address $ff7b contains the relevant Long range/Short range bit flag, ie. bit 0 toggles the IR range 0 = Long, 1 = Short. Could I (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx.pbforth)
 
  Re: RCX motor voltage
 
(...) I am using the motors that came with the RCX. (...) Hmmm - do you propose to ensure the delay in the relay circuit or programmatically? If in the circuit, how? (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
 
  Re: RCX motor voltage
 
Wes, relays would work pretty well. (Still, how much current do your motors draw???) The LEGO motors draw about .35 Amps (350 Milliamperes) You could connect two 5V coil relays , each with a diode in series with the coil, connected oppositely to (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
 
  Re: Communication with PC using NQC
 
(...) Could you be more specific on "querying its state" and "high-level commands"? If you're willing to write custom C++ code, you can pretty much do whatever you want on top of the rcxlib stuff from the NQC source base. Its pretty easy to send (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
 
  Use PC's IR port instead of IR tower?
 
Hello, Is it possible to use a PC's IR port, instead of the IR tower, to communicate with an RCX? (I have a Dell Inspiron 3500). -- Brad Aisa baisa@NOSPAMbrad-aisa.com -- PGP public keys available at: (URL) faire." (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
 
  Re: RCX motor voltage
 
(...) I can think of two other possibilities: The best approach is probably to add more gears so that the motors don't have to work as hard to move the platform. The platform will move more slowly, but at least it will move at all. (Hmm... That (...) (25 years ago, 8-Nov-99, to lugnet.robotics.rcx)
 
  Re: RCX motor voltage
 
(...) These solutions bring up problems of their own: using a motor to operate a switch (battery box or Lego switch) requires monitoring the switch state to determine on/off status. Also, there will be a time delay while the motor moves from one (...) (25 years ago, 8-Nov-99, to lugnet.robotics.rcx)
 
  Re: Hapless WinNT user
 
I'm afraid these are the same errors that were reported with 0.2.1. It would appear that it is looking at a very long and convoluted path which happens to include the standard gcc, not just the cross-compiler. But that is just a guess based on a (...) (25 years ago, 8-Nov-99, to lugnet.robotics.rcx.legos)
 
  Hapless WinNT user
 
That's me, trying to use legOS 0.2.2 on WinNT with CygWin. I'm using the same tools that worked for me for legOS 0.1.7. Make complains when it tries to build dll, specifically when it tries to compile loader.c. I get a bunch of redefined symbols and (...) (25 years ago, 8-Nov-99, to lugnet.robotics.rcx.legos)


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