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(...) Hmm...yes, now I see. Unless you owned sequential worms, it wouldn't fit. Thanks for clarifying. Now I see what Steve was driving at. ~Mike (...) (22 years ago, 10-Oct-03, to lugnet.robotics)
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| | Re: Mechanical pneumatic piston
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(...) Ah... I missed this post and asked the same question (less clearly) in another post. (...) Kevin (22 years ago, 10-Oct-03, to lugnet.robotics)
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| | Re: Mechanical pneumatic piston
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(...) The problem is that you would need a mold for each unique part that is cut. If the number of rotations/divided by the length does not give you length that is repeatable using quarter turns you need more than one mold. This is *not* good (very (...) (22 years ago, 10-Oct-03, to lugnet.robotics)
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| | Re: Mechanical pneumatic piston
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(...) I'm not sure I agree with that. It seems to me that if you made these worms from one great long string, all you need to do is cut them wherever you want a new one. The helii (is that a word?) would still line up. I don't see why they couldn't (...) (22 years ago, 10-Oct-03, to lugnet.robotics)
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| | Re: Linked Lists in BrickOS
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(...) Actually, it turned out that there was some leftover obj or mak files that were messing up the compiler. I purged the directory, and all was well. Thanks for the tip on tabbing. Just wanted to confirm that a BrickOS pointer is only 2 bytes... (...) (22 years ago, 10-Oct-03, to lugnet.robotics.rcx.legos)
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| | Re: Mechanical pneumatic piston
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(...) If you look at the 1x4 rack (or any of the other sizes, for that matter) you'll see that actually there is more slop available than you'd think. The gears mesh with them fine, The worm gear similarly could have been stretched just a tiny bit, (...) (22 years ago, 10-Oct-03, to lugnet.robotics)
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| | Re: Mechanical pneumatic piston
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(...) The end of the helix on one worm gear lines up exactly with the start of the helix on a second worm gear. If the gears were a quarter stud longer, they wouldn't have this useful property unless Lego also changed the pitch of the helix. (...) (22 years ago, 10-Oct-03, to lugnet.robotics)
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| | Re: Mechanical pneumatic piston
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(...) Yes, it seems rather odd. It really wouldn't have affected the design of the gear at all. Just extend the spiral another fraction of an inch. Simple, really. If it's right that they're about 1/4 or 1/8 stud short, you ought to be able to line (...) (22 years ago, 9-Oct-03, to lugnet.robotics)
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| | Re: RCX Communications problems
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(...) the LNP class also uses LLC, it just doesn't implement receiveAck(). (...) You could work ACKs into LNP (e.g. create a LNPReliableHandler), or you could add multi-byte support into and put an addressing layer over LLCReliableHandler. The (...) (22 years ago, 9-Oct-03, to lugnet.robotics.rcx.java)
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| | disable LNP
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I need to write a program that can send and receive messages, but there are times when the program is running, that I don't want to waste processor time watching for messages. Is it possible to switch LNP on and off, while a program is running? I (...) (22 years ago, 9-Oct-03, to lugnet.robotics.rcx.legos)
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| | IR replacement
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Hi Rob ! Well, there is probably a cheaper way, that would be making the IR - communication faster through changing the program software. But I think that it's more effective to change the IR - communication by a RF - module or bluetooth, because (...) (22 years ago, 9-Oct-03, to lugnet.robotics)
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| | Re: Linked Lists in BrickOS
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(...) If you install cygwin and the cross compilers using my pre-packaged installer ((URL) and my pre-packaged and pre-built brickOS/leJOS installer ((URL) then you should be able to write your brickOS programs using GNU Pascal. (see below) (...) I (...) (22 years ago, 9-Oct-03, to lugnet.robotics.rcx.legos)
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| | Re: Mechanical pneumatic piston
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(...) I'd be very interested to know the reason why LEGO choosed to make the worm gear so short :-( Philo (22 years ago, 9-Oct-03, to lugnet.robotics)
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| | Re: Mechanical pneumatic piston
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In lugnet.robotics, Mike Thorn wrote: [snip] (...) Nope. Worm gears are not an integral number of studs long. They are about 1/4 of a stud short. Not enough for a small pulley (1/2 bushing). (...) Kevin (22 years ago, 9-Oct-03, to lugnet.robotics)
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| | Re: replacement for IR-communication
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That seems like a very expensive solution. Isn't there a cheaper way? Also, could there be an internal solution (keeping everything inside the RCX and tower)? Rob "Mike Reddy" <mreddy@glam.ac.uk> wrote in message news:HMDouD.Dww@lugnet.com... (...) (...) (22 years ago, 9-Oct-03, to lugnet.robotics)
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| | Re: leJOS auto power-off
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(...) your programs, lest you forget to turn off the RCX while a program is running and waste a set of batteries ... Like while(System.current...meMillis() < 600000) { // 10 minutes timeout ... } as a main loop instead of while(true){...} Jürgen (22 years ago, 9-Oct-03, to lugnet.robotics.rcx.java)
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| | Re: Mechanical pneumatic piston
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(...) Ah, that's it exactly! Thanks a lot. (...) Very interesting. Fairly small, and I imagine it moves pretty quick. Actually, in the application I want it for, it will be cranked by hand, so a motor isn't needed at all. (...) Hmm...I wonder why (...) (22 years ago, 9-Oct-03, to lugnet.robotics)
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| | Re: Linked Lists in BrickOS
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(...) Yeah, this was the problem. It hadn't occurred to me that BricxCC wasn't saving the file before making. Whoops. (...) Yes, tremendously (...) It looks like this was the problem line. I didn't know the syntax for a pointer to nothing. (in (...) (22 years ago, 9-Oct-03, to lugnet.robotics.rcx.legos)
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| | Re: Linked Lists in BrickOS
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(...) BricxCC can't know for sure what compiler to use unless it can tell what type of file you are editing. It figures this out using the file extension. In order to compile C++ and C code, BricxCC needs the file to have a .cpp or .c extension. (...) (22 years ago, 8-Oct-03, to lugnet.robotics.rcx.legos)
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| | Re: INT_MAX in BrickOS
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(...) Yes, very much, thank you. That explains why I was getting odd results when I set an int to 65535. Now, I know what to do. Thanks Steve (22 years ago, 8-Oct-03, to lugnet.robotics.rcx.legos)
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