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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: 0.498)
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| | reading music thru an RCX
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| Anybody already write code to play notes thru the RCX as they are chosen, keep a history of the notes, replay the assembled tune, etc.? --- I think I mean to be asking for a public domain GUI. Courtesy l.r.r. recently, I've already got .java code (...) (22 years ago, 10-Feb-03, to lugnet.robotics.rcx)
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ir
(score: 0.498)
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| | IR header how optional
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| (...) Yep. But via our solid new reply framing code, thanks again, now I can see ... (...) Nope. At least not here: now that I look, I see my RCX often doesn't require the PC to send x 55:FF:00. IR command packets like x 10:FE 10:FE PBAliveOrNot and (...) (22 years ago, 2-Feb-03, to lugnet.robotics.rcx)
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ir
(score: 0.498)
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| | Re: IR header how optional
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| (...) Whether serial transmission is as simple as start:data:parity:stop repeated, or not, I still have no idea. But I'm posting again to say in those calculations I was off a whole order of magnitude, sorry. I imagine the calculator I used reported (...) (22 years ago, 2-Feb-03, to lugnet.robotics.rcx)
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ir
(score: 0.498)
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| | Re: IR header how optional
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| (...) I doubt anything (short of a 2MV Lightning Flash) will warm anything in 1 msec. ;) Also, the receiver won't warm up until the header has been read in completion and decoded. So I doubt it's used for that. Normally, in any communication, you'd (...) (22 years ago, 2-Feb-03, to lugnet.robotics.rcx)
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ir
(score: 0.497)
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| | framing RCX LNP replies in Java
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| (...) Thanks I reached: src/org/javastorms/lnp/IR.java (...) I think I see ... readMsg accepts what it likes else dies after reading the first distasteful byte. readMsg likes either of xF0 or xF1, then a length byte, then that many bytes, then a (...) (22 years ago, 1-Feb-03, to lugnet.robotics.rcx.java)
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ir
(score: 0.497)
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| | Re: frame RCX reply how
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| (...) Anyone know more specifically where to read how Lejos frames standard RCX IR replies? Does Lejos even include any .java code that runs on the PC? I mean to be asking how a PC should frame the standard replies from Lego RCX fimware, not how a (...) (22 years ago, 1-Feb-03, to lugnet.robotics.rcx.java)
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ir
(score: 0.497)
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| | Re: frame RCX reply how
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| I wish I could give you a direct answer, but I don't know. However, I suspect (as I'm sure you do) that what you are looking for has already been done. Below are three possible sources which you can adopt, co-opt, or reverse-engineer to get where (...) (22 years ago, 1-Feb-03, to lugnet.robotics.rcx)
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ir
(score: 0.497)
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| | Re: frame RCX reply how
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| (...) Yes helpful framing rules thanks. (...) Thanks in particular for pointing out the before & after rubbish. Me, just now I began quoting this rule in a fog, somehow not immediately appreciating that: The receive framing in bricxcc withstands (...) (22 years ago, 2-Feb-03, to lugnet.robotics.rcx)
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ir
(score: 0.497)
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| | Re: frame RCX reply how
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| Concerning the parsing of LEGO packets, I've found these bits to be useful in coming up with a parsing algorithm: * Packets start with 0x55 * Individual bytes of a packet are sent with little or no delay in between bytes * Packets may or may not (...) (22 years ago, 1-Feb-03, to lugnet.robotics.rcx)
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ir
(score: 0.496)
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| | Re: frame RCX reply how
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| (...) Thanks for the link, but I meant only to be asking: How do I make sense of RCX replies ... ... when the RCX is first powered and after I download Lego firmware. Help? Curiously, cluelessly, thankfully yours, Pat LaVarre P.S. Do we have no (...) (22 years ago, 31-Jan-03, to lugnet.robotics.rcx)
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ir
(score: 0.496)
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| | Re: constant green light
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| (...) That's interesting. On my new XP eMachine PC we have noticed that when we shutdown (and it powers off the PC) that we have to switch the power switch on the power strip that our computer plugs into or it will sometimes hold our phone line open (...) (22 years ago, 27-Feb-03, to lugnet.robotics.rcx)
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tower
(score: 0.496)
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| | IR Proximity Detection Problem
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| I have tried to get proximity dectection via RCX emitting IR (SendMessage/NQC) and Light Sensor (mounted on top of the RCX's IR unit). But the raw values seemed to be the same with/without emitting IR. Average value was 725. Went up to 800 (black (...) (22 years ago, 16-Jan-03, to lugnet.robotics.rcx)
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ir
(score: 0.496)
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| | Re: constant green light
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| (...) Any word on whether you have discovered that the power management settings of the OS have any effect on the geen light situation? I haven't had a chance to play with my serial tower on my XP desktop PC yet. John Hansen (22 years ago, 26-Feb-03, to lugnet.robotics.rcx)
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tower
(score: 0.496)
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long
(score: 0.495)
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| | Re: constant green light
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| (...) That the light stays on during Windows Suspend suggests to me that it has something to do with the power management features of your laptop. Try temporarily turning off the power management option and see if the tower behaves differently. I (...) (22 years ago, 22-Feb-03, to lugnet.robotics.rcx)
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tower
(score: 0.495)
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| | Re: IR Proximity Detection Problem
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| (...) A friend of mine attempted this setup a while back and came to the conclusion that he basically needed to be nearly perfectly perpendicular to the object he was trying to detect. So he decided this was way to precise/finicky for his general (...) (22 years ago, 17-Jan-03, to lugnet.robotics.rcx)
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ir
(score: 0.495)
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| | Re: Problems with NQC and math operations
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| (...) Did you considered that the RCX has only integer variables. So, the allowed operation range is -32768 32767. If at any stage of your operation you exceed these limits, the result will be corrupted. For the use of sine and cosine with integer (...) (22 years ago, 3-Feb-03, to lugnet.robotics.rcx.nqc)
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range
(score: 0.495)
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| | Re: IR Proximity Detection Problem
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| Dean, Philo, Thank you both very much: Including the sensor monitoring in a "repeat"-loop brouhgt the solution. Works quite perfect. I guess "SendMessage" is somewhat slow, i. e. the IR-emission/reflection. Now I am going to even improve the (...) (22 years ago, 17-Jan-03, to lugnet.robotics.rcx)
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ir
(score: 0.495)
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| | Re: Problems with NQC and math operations
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| Jeff, Your problem is with the 16 bit integer size that NQC uses. All integers are in the range -32768 to 32767. Using 10000 to simulate fixed point math operations is killing you. Everything works when you replace theta and D with constants because (...) (22 years ago, 2-Feb-03, to lugnet.robotics.rcx.nqc)
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range
(score: 0.495)
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