 | | Using Servos with the RCX - Yes!
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Hi all, I've finally got my RCX servo driver circuit working. It was actually working months ago but I couldn't get the servo to stop jittering. Then I swapped in a different servo, and it worked like a champ! (URL) Before you get all excited, the (...) (25 years ago, 10-Feb-00, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | static version of lnpd uploaded to arthudent
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Because of several reports about compiling problems with lnpd, i made a static version and uploaded it to arthurdent. It's quite fat: 373942 bytes, compared to the dynamic, which is 21352, but we all have at least 512 Megs, don't we ? I guess it (...) (25 years ago, 9-Feb-00, to lugnet.robotics.rcx.legos)
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| | Re: How much memory finally?
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(...) If I remember correctly the RCX has a 16kROM for the basic routines. It has 32k RAM for firmware and programs. The scout has 32K ROM and only 1K RAM (400bytes for your program) Dean (25 years ago, 9-Feb-00, to lugnet.robotics.rcx)
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| | Re: rcx 1.0 and an ac adaptor
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(...) The 'official' adapter, is 10VAC, 0.7A. I have seen one person who blew the rectification bridge, and he simply replaced this himself ((it was an old unit). There are two 'possibly combined' problems. DC, puts all the load on just one pair of (...) (25 years ago, 9-Feb-00, to lugnet.robotics.rcx)
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| | How much memory finally?
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I'm trying to figure out how much memory the RCX has. Many sources claims that it has - 16k rom - 16k ram for the firmware - 6k reserved for our own programs Does this mean the RCX has 22k of RAM memory? What an odd number... Also, when I perform (...) (25 years ago, 9-Feb-00, to lugnet.robotics.rcx)
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| | Re: LNP Example please
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(...) you are probably using an older version of glibc, which doesn't have the argp stuff. This has been reported several times, and i begin to think it was a bad decision to use this interface instead of getopt(). However, it's so easy to use... If (...) (25 years ago, 9-Feb-00, to lugnet.robotics.rcx.legos)
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| | Re: using the remote control with legOS
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it would be nice to be able to use both LNP and remote control (advance tactical robots) I wrote last night a small win prog to figure out how the remote is talking and this is it: +++ // LEGO REMOTE CONTROL (#9738 = ~20 USD) FOR RCX MESSAGE (...) (25 years ago, 9-Feb-00, to lugnet.robotics.rcx.legos)
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| | Re: LNP Example please
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Just tell me if I am been lazy but I can't find the argp.h file anywhere. abacus:~/lego/lnpd+liblnp$ make depend for i in lnpd liblnp applications ; do make -C $i depend || exit -1 ; done make[1]: Entering directory `/home/mike/lego/lnp...blnp/lnpd' (...) (25 years ago, 9-Feb-00, to lugnet.robotics.rcx.legos)
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| | Re: rcx 1.0 and an ac adaptor
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(...) (25 years ago, 9-Feb-00, to lugnet.robotics.rcx)
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| | Re: Too many sensors
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(...) uhh, it looks i missed something quite important - how do you accomplish that ? --Martin (25 years ago, 9-Feb-00, to lugnet.robotics.rcx.legos)
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| | Re: LNP Example please
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(...) Great, i'd really love doing work like this. If you intend to use lnpd+liblnp on the PC side, i'd be very interested in the results. (...) yes, exactly. The addressing layer gives you connectionless functionality very similar to UDP. A packet (...) (25 years ago, 9-Feb-00, to lugnet.robotics.rcx.legos)
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| | Re: Radio Shack CDS cells in parallel
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(...) ----- True, but the RS CDS cells are cheap and using them in parallel or series also changes the response range, since all the resistances change with light levels. This would be most dramatic in the series connected case at the low resistance (...) (25 years ago, 9-Feb-00, to lugnet.robotics.rcx)
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| | Re: Radio Shack CDS cells in parallel
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(...) I built a sensor out of one of those and it works fine, so yours is probably defective. I superglued mine to the top of a 2x2 brick with the studs removed. You can see my high tech design at (URL)I tried this idea and it worked. You can put (...) (25 years ago, 8-Feb-00, to lugnet.robotics.rcx)
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| | Re: rcx 1.0 and an ac adaptor
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(...) According to Knudsen's book, AC or DC in either polarity is fine (which is great!). That's the only place I've seen the input characteristics mentioned, is there an "official" spec anywhere? One thing you might want to be careful of: I read (...) (25 years ago, 8-Feb-00, to lugnet.robotics.rcx)
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| | Re: LNP Example please
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I've got 2 RCX's and 2 pc's in the same room so will be working with this over the next couple of weeks. The 2 RCX units work really well, my next step is to get the PC's to join the party. My implementation of LNP so far leads me to believe it is a (...) (25 years ago, 8-Feb-00, to lugnet.robotics.rcx.legos)
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| | rcx 1.0 and an ac adaptor
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I have an rcx 1.0 and a universal adaptor (the kind with the different plug sizes and voltage settings). Two questions: (1) Do i have to worry about polarity? I found the right size adaptor, plugged it in, and it worked fine. Did i get lucky or is (...) (25 years ago, 8-Feb-00, to lugnet.robotics.rcx)
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| | new version of winlegOS
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There is now a new version of WinLegOS up for public dissemination: (URL) told it should run on NT machines as well as win98. All thanks again to Rossz. -Luis ###...### Profanity is the one language that all programmers understand. -Anonymous (...) (25 years ago, 8-Feb-00, to lugnet.robotics.rcx.legos)
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| | Re: Too many sensors
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Ben Jackson wrote: > You could do it but you'd lose rotations as long as the button was pressed. > You'd probably need alternate firmware to even get that working well. I can live with losing rotation when the button is pressed. I may have to reset (...) (25 years ago, 8-Feb-00, to lugnet.robotics.rcx.legos)
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| | Radio Shack CDS cells in parallel
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When I first checked out the Radio Shack CDS cell five packs, the cells were all alike, about 1/4 inch and flat on two sides. But when I went back, I found some packs that had different cells. They had three of the usual small ones and a 1/2 inch (...) (25 years ago, 8-Feb-00, to lugnet.robotics.rcx)
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| | Re: Too many sensors
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(...) You could do it but you'd lose rotations as long as the button was pressed. You'd probably need alternate firmware to even get that working well. So on one port you can have (1 touch + 1 light/temp), (1 rotation) or (4 touch). The last with (...) (25 years ago, 8-Feb-00, to lugnet.robotics.rcx.legos)
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