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| (...) Hi Scott, please regard this as an extension to explainations from Steve Baker: 1. the code Binary Decimal Hexadecimal 0000 0 0 0001 1 1 0010 2 2 0011 3 3 0100 4 4 0101 5 5 0110 6 6 0111 7 7 1000 8 8 1001 9 9 1010 10 A 1011 11 B 1100 12 C 1101 (...) (20 years ago, 11-Aug-04, to lugnet.robotics)
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| | Rotating through a four-bit nibble
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| No, it's not pornographic (look over in rtlToronto - I hear it's a fun thread). But I'm working in NQC, and I need to rotate the bit series in a 4-bit (or 8-bit) nibble embedded in a 16-bit word. Annoying. Any suggestions? Masking the desired four (...) (19 years ago, 20-Sep-05, to lugnet.robotics)
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| | Can't get input capture to work
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| I'm hoping someone can help me figure out the problem with the following driver. Ultimately I want to simulate a sony IR remote control using a 6.270 board. I acquired the sony-ir.asm and tried it out, but that wasn't working; so I trimmed it down (...) (25 years ago, 17-Jan-00, to lugnet.robotics.handyboard)
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| | Re: lnp addressing messages
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| (...) Martin Cornelius wrote a nice little piece on this and related isues. it can be found at: (URL) particular look for the sentence: (...) and all shall be revealed :) taken from luis villas legOS howto i initialize lnp on the PC with: (...) (22 years ago, 27-Aug-02, to lugnet.robotics.rcx.legos)
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| | Re: assembler time delay?
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| Tomas, NOP is the easiest way while staying within a single program. If you want to measure long periods of time, you could attach some code to the 2khz interrupt timer (documented in the handyboard manual). Just setup a memory space to use as a (...) (22 years ago, 24-Aug-02, to lugnet.robotics.handyboard)
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| | RE: Wot no RCX power connector?
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| (...) I've read that the end where the power connector was is "thinner" which is OK since the connector was mounted on the component side and would have added to the hight required. The "smoothing caps" could be eliminated in a battery only design, (...) (25 years ago, 19-Oct-99, to lugnet.robotics)
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| | [long] Interrupt programming, buggy code
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| Hi all, I am currently programming the Lego RCX at low-level (plain C) using the GCC cross-compiler for Hitachi H8/300 and Kekoa Proudfoot's LibRCX. In fact, I'm designing exercises for students that learn micro-controller programming. Therefore, I (...) (21 years ago, 2-Mar-04, to lugnet.robotics.rcx)
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| | Re: Expansion interface status
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| (...) To Fred and others, I've been thinking about this off and on for over a year now, and since I now have parts I'll finally get my HBs into something more than just board status. Robots eat I/O pins for lunch. Sensors eat input pins and (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
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| | Re: GNU C wizards?
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| On Sun, 3 Jan 1999, I wrote: =>> =>> Are there any GNU C/C++ wizards out there? I'm trying to write an =>> asm() statement to describe the H8's bclr/bset instructions. I have a =>> wicked sweet tooth for C++ syntactic sugar, and I'd like to be able (...) (26 years ago, 4-Jan-99, to lugnet.robotics)
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| | Re: RCX2: ViewSourceValue Help
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| (...) asm statements are just followed by a comma-separated list of fields enclosed in braces. In general, each field is evaluated at compile time and the resulting value is truncated to 8 bits. The exception is the & operator. The &x syntax is used (...) (24 years ago, 24-Apr-00, to lugnet.robotics.rcx.nqc)
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| | Re: Led display on Spybot
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| (...) #if defined(__SPY) //LED display effects (0 to 7) #define displayLedNone -1 #define displayLedScan 0 #define displayLedSparkle 1 #define displayLedFlash 2 #define displayLedRedToGreen 3 #define displayLedGreenToRed 4 #define (...) (22 years ago, 28-Jan-03, to lugnet.robotics.spybotics)
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| | Re: Vector 2x giving me lots of trouble...
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| (...) Yes, I had this problem also. (...) That is a good idea but there's no reason to put the compass into Slave mode to do it. According to the Vector docs while the compass is in Master mode you can either hold P/C low for continuous sampling or (...) (27 years ago, 2-Jun-97, to lugnet.robotics.handyboard)
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| | Re: I2C device for the RCX
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| "Bastiaan v.Kesteren" <b.van.kesteren53@zonnet.nl> wrote in message news:H8nvnF.2rz@lugnet.com... (...) takes (...) package, (...) A 3% error rates (7 out of 250 messages) is far too high. I would have expected error rates under 1 in 10 million (...) (22 years ago, 13-Jan-03, to lugnet.robotics)
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| | Re: Electrical Data Link between 2 RCXs
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| It's me again with some improvements for an "Electrical Data Link between 2 RCX". In the current version I changed the default condition of the link to "high" (in the transmitter: OFF(OUT_B)) so that the receiver has a 1 at its sensor input. So, you (...) (23 years ago, 17-Apr-01, to lugnet.robotics.rcx.nqc)
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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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| | NXT & RIC
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| A while back I wrote part 1 of a 2 part description of the RIC file format on the Nxtasy blog. I still haven't gotten around to writing part 2 (been busy writing other stuff) but RIC-related things have been hanging around on the edges of my (...) (17 years ago, 29-Jun-07, to lugnet.robotics.nxt)
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| | Re: motor port problem .
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| Philip In a message dated 98-11-19 21:05:04 EST, you write: << hi, I have a big problem. I followed the method of yours that just lift up pin 8 of one L293 and wirewrapped it. The positive supply is wirewrapped to pin 8 . How about the negative (...) (26 years ago, 20-Nov-98, to lugnet.robotics.handyboard)
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| | Re: LNP Addressing Schemes
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| (...) It's quite simple: Currently, there are two kinds of LNP-Packets: the first one is called the integrity packet (switch your mail-reader to fixed font now): +--+---+---...---+---+ |F0|LEN| IDATA |CHK| +--+---+---...---+---+ F0 : identifies an (...) (25 years ago, 3-Feb-00, to lugnet.robotics.rcx.legos)
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| | Re: C$ - Code Only
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| (...) Folks who read rtlToronto can skip this part. I added it because I'm cross posting to robotics.rcx. For those who don't know, rtlToronto had a contest with robots playing Connect Four. Creating a robot for this is double faceted. Getting (...) (21 years ago, 6-Feb-04, to lugnet.org.ca.rtltoronto, lugnet.robotics.rcx)
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