 | | Re: touch sensitive sensor
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"Philippe Hurbain" <philohome@free.fr> wrote in message news:HqCD5y.1M6C@lugnet.com... (...) There (...) my (...) ohm (...) touch (...) when not (...) a (...) the (...) Thanx for the info. But 0.1mm is not much travel distanse and the only usable (...) (22 years ago, 23-Dec-03, to lugnet.robotics)
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| | Re: touch sensitive sensor
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(...) Are you sure your multimeter is up to the task? I have measured numerous touch sensors (from 1.5, 2.0 and cybermaster), all of them have a high value when not pressed (open for RIS 1.5 and 2.0, 10 to 15KOhm for Cybermaster that have a (...) (22 years ago, 23-Dec-03, to lugnet.robotics)
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| | Re: touch sensitive sensor
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"Chris Phillips" <drvegetable@attbi.com> wrote in message news:HqBKq4.A5I@lugnet.com... (...) news:HqB44J.204J@lugnet.com... (...) robot (...) those (...) can (...) grip is. (...) and the (...) volume (...) the task (...) controler (...) maybe (...) (22 years ago, 22-Dec-03, to lugnet.robotics)
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| | Re: touch sensitive sensor
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(...) The touch sensors that come in the RIS set already work as you describe, and are even about the size of a 2x3 brick. The touch sensor has a variable resistance that changes as more force is applied to the button. You just have to read the raw (...) (22 years ago, 22-Dec-03, to lugnet.robotics)
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| | Re: tuch sensitive sensor
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(...) The cheaper music synthesisers (and perhaps the expensive ones too) do this by having two simple switches - set to switch at different points in the key's travel. All they do is measure the time between the first switch triggering and the (...) (22 years ago, 22-Dec-03, to lugnet.robotics)
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| | Re: tuch sensitive sensor
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(...) one (...) Regarding the raw sensor technology to measure the force pressing on a button, a spring-loaded potentiometer is one solution. Other potential solutions include piezo-resistive sensors, a strain-gage mounted on a moment-arm, or even (...) (22 years ago, 22-Dec-03, to lugnet.robotics)
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| | Re: tuch sensitive sensor
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"Jona" <jona@24tooth.com> wrote in message news:HqB44J.204J@lugnet.com... (...) robot (...) those (...) is. (...) the (...) volume (...) task (...) controler (...) there (...) pick up (...) The button on the PlayStation 2 controller is analog, but (...) (22 years ago, 22-Dec-03, to lugnet.robotics)
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| | Re: tuch sensitive sensor
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In lugnet.robotics, Øyvind Steinnes wrote: <SNIP> (...) all analog? They seem to do exactly what you are talking about, but maybe there is some better processing going "on under the hood"? I wonder if you can pick up an old controller off of e-bay (...) (22 years ago, 22-Dec-03, to lugnet.robotics)
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| | Re: tuch sensitive sensor
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(...) your refering to a potentometer. Nick. (22 years ago, 22-Dec-03, to lugnet.robotics)
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| | tuch sensitive sensor
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Hello folks, I just come up with an idea, maybe there is a sensor like this made already... I'm thinking of a tuchsensitive sensor. Not the on/off type or with only one resistor value. I'm thinking of a tuchsensor that can register how far the (...) (22 years ago, 22-Dec-03, to lugnet.robotics)
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| | THX for the advices
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Hi ! Thanks a lot for your advices, Steve and Kevin ! Now I know a lot more about the behaviour of the sensor. I think I'm gonna watch his activity through connecting it with my oscilloscope, then I can see exactly how it communicates with the RCX. (...) (22 years ago, 21-Dec-03, to lugnet.robotics)
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| | Re: rotation sensor
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(...) Hi Thomas, Your english is better than my danish. No need to apologize. There are only two wires between the RCX and the rotation sensor. These wires provide both power and sensor signal. There are two kinds of sensors: passive and active. (...) (22 years ago, 21-Dec-03, to lugnet.robotics)
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| | rotation sensor
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Hi ! I'm gonna include the lego rotation sensor to a c167 system created by myself and for that I need to know which pins of the lego plug function for what. As far as I know the plug of the rotation sensor has two pins for power supply and another (...) (22 years ago, 21-Dec-03, to lugnet.robotics)
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| | Re: RCX 1.0 without external power jack?
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(...) Yes, there is a current limitation in driver. See this curve ((URL) and driver datasheet ((URL) (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Re: RCX 1.0 without external power jack?
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(...) It looks like there isn't as much output drive protection on the RCX2.0 PCBs, unless the MLX10402CB parts have more internal protection than the ELEX 10402As. Does anyone know of any information available about this? I will say now that I (...) (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Made me cry!
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Has anyone seen/read the Ultimate Builders Set The Untold Story at Lego.com (URL) Look at all those parts..... this is the phrase that I got upset about ".....When their work place becomes too messy Anthony and Mads do not start to sort the (...) (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Re: Product Review: Linksys WVC11B and VEO Observer
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(...) One thing I think is worth pointing out is that at least the VEO Observer uses some proprietary activeX applet and is only compatible with IE 5.0+, so no support for other browsers (or Linux). Anything except windows is explicitly *not* (...) (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Re: RCX 1.0 without external power jack?
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(...) Apart from supply jack in 1.0 and 2.0 marking on 2.0, there are some PCB differences, see board scans here: (URL) 2.0 brick uses a 76kHz IR receiver chip to get better compatibility with Spybots/Manas but much lower sensitivity between RCX to (...) (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Re: RCX 1.0 without external power jack?
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(...) The Lego outlet at Dawsonville might have some 9709's available--yep, the one's with the jack. I think they are currently 59.95 or 69.95. If anybody wants some and is going to Brickfest PDX, you can do a phone order for the RCX (so you can buy (...) (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Behavior of the Roomba
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Thinking about the one major robotic invention that's creeping into homes these days, it doesn't seem too complex an algorithm. The behavior seems to be as follows: 1) It starts out in an outward spiral motion 2) When it encounters a wall / stairs (...) (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Re: RCX 1.0 without external power jack?
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(...) Ooops my bad... Yes they are marked 2.0. Has anyone checked whether they are any different to the 1.0 from the 1.5 set? ROSCO (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Re: RCX 1.0 without external power jack?
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I have 2 RCXs that came with the RIS 2.0 that are labeled RCX 2.0. my $0.02 ----- Original Message ----- From: "Ross Crawford" <rosscraw@bigpond.net.au> To: <lego-robotics@crynwr.com> Sent: Saturday, December 20, 2003 12:14 AM Subject: Re: RCX 1.0 (...) (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Re: RCX 1.0 without external power jack?
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I bought the brick by itself and I can see how the seller mis-listed it. Live and learn. I got it at a good price so I'll keep it. I still want one with an external jack. Oh well, just have to buy another. :0) Thanks for the info. Mike (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Re: RCX 1.0 without external power jack?
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(...) Unfortunately Mike, it's rather confusing - although the *sets* are numbered 1.0, 1.5 and 2.0, the RCXs are all marked 1.0. Only the one that came in the 1.0 set (9719) has a power jack, although you can also still get them from Lego (...) (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | RE: RCX 1.0 without external power jack?
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That is a 1.5... same numbers... no power jack. Liz B (...) Behalf (...) jack. (...) all (...) (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | RCX 1.0 without external power jack?
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I bought a RCX 1.0 used on Bricklink to get an RCX with an external jack. The one that arrived is marked 1.0 but has no external jack. I thought all 1.0 units had the jack. Anyone else run in to this? Mike (22 years ago, 20-Dec-03, to lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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(...) It doesn't work (yet), but it's very close... (URL) K (22 years ago, 19-Dec-03, to lugnet.technic, lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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I did, did no one read it? (...) (22 years ago, 19-Dec-03, to lugnet.robotics)
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| | RE: I was thinking about bipedal walkers this morning and....
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Tinkertoys is close. This site also has the plans: (URL) -----Original Message----- (...) (22 years ago, 19-Dec-03, to lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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(...) I have almost nothing to contribute to discussions re: robotics, but I spotted this marginally relevant story on cnn.com: (URL) of course. Dave! (22 years ago, 19-Dec-03, to lugnet.technic, lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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Lots of responses to my post, so I'm following up my own post to address all of them. A lot of people are pointing out that this has been done before in the field of robotics, but what I was actually asking about is if it's been done before in (...) (22 years ago, 19-Dec-03, to lugnet.technic, lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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I think you need to get some shifting of weight over the hips involved so that you don't fall to the side. it's complex. do a google search - i'll bet there is lots of online material available.... good luck (...) (22 years ago, 18-Dec-03, to lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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(...) Parallax markets the Toddler, which is a walking Robot that shifts its center of gravity to walk. It turns by sliding its feet in opposite directions. It has 34 possible movements. (22 years ago, 19-Dec-03, to lugnet.technic, lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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Now, think about what physically goes into making yourself walk. How much energy and control is involved? Try walking on a flat, level surface (or better, one at a slight decline, like a very long handicap ramp). Walk with your natural gait, at the (...) (22 years ago, 19-Dec-03, to lugnet.technic, lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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(...) More info here (URL) (22 years ago, 18-Dec-03, to lugnet.technic, lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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(...) Dunno but this non-LEGO robot (with knees) has been taught to run (URL) wish there was a video available on the net somewhere - I saw it on TV yesterday, and though it's difficult to tell it's running, it does seem rather more "human-like" (...) (22 years ago, 18-Dec-03, to lugnet.technic, lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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(...) Hi Mark, I have never seen a walker like this. I'd be the last person to say it can't be done. Kevin (...) (22 years ago, 18-Dec-03, to lugnet.technic, lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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(...) Yes, there was a lot of work on this at the MIT robotics lab back in the 70s/80s, with bipedal, quadrupedal, and even unipedal hoppers. To get it to work, you need good orientation and/or acceleration sensors (I believe that the MIT folks used (...) (22 years ago, 18-Dec-03, to lugnet.robotics)
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| | Re: I was thinking about bipedal walkers this morning and....
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Yes, I did a prototype using pneumatics as muscles. It worked semi-well - the thing walked somewhat, although in a very stiff gate. The main problem came from using pneumatics. I couldn't keep the pressure high enough to swing the legs back out (...) (22 years ago, 18-Dec-03, to lugnet.robotics)
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| | Sony Claims First Running Humanoid Robot
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Thought this would be of interest to the group - if you haven't seen it already! (URL) here's the link to the Slashdot discussion: (URL) (22 years ago, 18-Dec-03, to lugnet.robotics)
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| | I was thinking about bipedal walkers this morning and....
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Consider the way we walk... we start by effectively starting to lean slightly forward, and we swing a leg some distance in front of ourselves to stop from falling. We then start to bring the other leg forward as we reupright ourselves and repeat the (...) (22 years ago, 18-Dec-03, to lugnet.technic, lugnet.robotics)
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| | Re: Mindstorms programming HELP wanted
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(...) Oh, believe me, there will be copious amounts of spirits this holiday season...whoo-hoo!! (22 years ago, 17-Dec-03, to lugnet.robotics)
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| | Re: Mindstorms programming HELP wanted
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Hi Jean-Marc, Besides doing a google using something like 'books Lego Mindstorms' to find Mindstorm specific books I can suggest, Programming the Parallel Port 0-87930-512-4 Programming Robot Controllers 0-07-140851-7 Mobile Robots 1-56881-011-3 (...) (22 years ago, 17-Dec-03, to lugnet.robotics)
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| | Re: Mindstorms programming HELP wanted
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Hi Jean-Marc, Brian Bagnall's "Core Lego Mindstorms Programming" would be an excellent place for you to start. Learning how to program is always more fun when you have a specific goal in mind, and this book gets you running without drowning you in (...) (22 years ago, 17-Dec-03, to lugnet.robotics)
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| | Re: Mindstorms programming HELP wanted
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Hi Jean-Marc, (...) ... (...) (URL) Be the holiday spirits with you, Happy Holidays y Felis Navidad! -- -- Open Forge, LLC 24/365 Onsite Support for PCs, Networks, & Game Consoles 512-695-4126 (Austin, Tx.) help@open-forge.com irc.open-forge.com (...) (22 years ago, 17-Dec-03, to lugnet.robotics)
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| | Re: Mindstorms programming HELP wanted
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Hi, "The Definitive Guide to Lego Mindstorms" by Dave Baum is a great reference for NQC "Extreme Mindstorms" is a sequel to Definitive Guide and contains chapters on NQC, pbforth, brickos(legos), and homebrew sensors by Dave Baum, Ralph Hempel, Luis (...) (22 years ago, 17-Dec-03, to lugnet.robotics)
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| | Mindstorms programming HELP wanted
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|
Hello there, I'm enjoying my RIS, but I have big trouble to program my MOCs. Beeing a complete newbie at programming, my brain is very chalenged and I have trouble to find good litterature to help me. I recently borrowed mindstorms for dummies from (...) (22 years ago, 17-Dec-03, to lugnet.robotics)
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| | Re: RCxcc
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|
(...) I already got it.thanks anyway. -Nick (22 years ago, 16-Dec-03, to lugnet.robotics.scout)
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| | Re: Spybot on shop@home
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|
(...) You will have fun with it! I know I did! It's like a video game, except in real life :) Gave one to my nephew a while back and he still does missions with it. Dave K (22 years ago, 16-Dec-03, to lugnet.robotics.spybotics)
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| | Spybot on shop@home
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The german shop@home dropped the spybots from 80+ Euro to 41 Euro. So I finally gave up and ordered one :) Regards, Michael (22 years ago, 16-Dec-03, to lugnet.robotics.spybotics)
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| |
| | Re: RCxcc
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|
use bircxcc (22 years ago, 14-Dec-03, to lugnet.robotics.scout)
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| | Re: Bump switches and "aggression"
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|
there's probably a way to use a light sensor to sense four different colored bricks. one for each direction. = sensor red ylw blue wht / ---\ /---- different heights of 'wedges' would lift a column, as a bumper is either slid in, or the bumper (...) (22 years ago, 16-Dec-03, to lugnet.robotics)
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| | Re: Bump switches and "aggression"
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|
You could attach 2 touch sensors to each port and take a look at the raw values when different combinations of the sensors are pressed. ----- Original Message ----- From: "Øyvind Steinnes" <phoenix@online.no> To: <lego-robotics@crynwr.com> Sent: (...) (22 years ago, 16-Dec-03, to lugnet.robotics)
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| | Re: Bump switches and "aggression"
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By the way, there are 5 states, all switches off, and each of the 4 switches. (That does not count the combinations if more than one switch were triggered at the same time). Thus a binary solution would take three inputs, just one less than the (...) (22 years ago, 16-Dec-03, to lugnet.robotics)
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| |
| | Re: Alternate Energy Sources
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|
"Nikhil Sarma" <lego-robotics@crynwr.com> wrote in message news:1071524909.3fde...ojo.com... (...) prospect of (...) I have done some experimenting with the Lego Solar panel with the Lego capacitor. Each solar panel with the capacitor will provide (...) (22 years ago, 16-Dec-03, to lugnet.robotics)
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| | Re: Bump switches and "aggression"
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|
For a pure Lego solution, you could try rigging up something with a rotation sensor that would have the sensor point in the direction of the collision. Suppose the rotation sensor was mounted with it's input shaft pointing up vertically - with a (...) (22 years ago, 16-Dec-03, to lugnet.robotics)
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| | Re: Bump switches and "aggression"
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There was discussion of one company that made switches with analog values that could be mixed, but they were apparently either expensive or hard to find (at least there was some difficulty). But simple resistor network, say a load resistor to ground (...) (22 years ago, 16-Dec-03, to lugnet.robotics)
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| | Re: Alternate Energy Sources
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(...) It would take a truly immense number of solar panels to drive an RCX with a couple of motors. The Lego Solar Panel (you can get it from Pittsco Dacta from their educational stuff) just barely drives one motor...very slowly - and then only in (...) (22 years ago, 15-Dec-03, to lugnet.robotics)
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| | Re: Bump switches and "aggression"
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|
"Rob Limbaugh" <lego-robotics@crynwr.com> wrote in message news:004201c3c2be$0a...markera... (...) can (...) How can I attach lets say 4 switches so the make a binary code, (4switches should need only two ports). I want to have one switch on each (...) (22 years ago, 15-Dec-03, to lugnet.robotics)
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| | Alternate Energy Sources
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I'm programming the RCX in the leJOS environment and don't like the prospect of downloading the firmware everytime I have to replace batteries. How good and reliable are the solar panels available for the RCX 2.0? Is anybody on the list using an (...) (22 years ago, 15-Dec-03, to lugnet.robotics)
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| | Re: Direct Link (was Global Objects was Strange RCX startup issues)
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(...) perfect! Step by step directions. Thanks. (...) So, now I can use the 'run' button to do other stuff, right? Or, for that matter, I could do other stuff with the On/Off button. After I turn it off (using the code listed), then, I can just turn (...) (22 years ago, 15-Dec-03, to lugnet.robotics.rcx.legos)
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| | Re: Vision command + linux
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(...) Can you explicit your method, give us some reference ? I really want to try it ! nanobapt (22 years ago, 15-Dec-03, to lugnet.robotics)
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| | Re: Bump switches and "aggression"
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Finally, I think I see the point to the 360-degree-all-purpo...-sensor... I was preparing a comment about putting a bot with only one bump sensor into an empty, small (two-foot) diameter arena and wait for it to get stuck... Then I realized that it (...) (22 years ago, 15-Dec-03, to lugnet.robotics)
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| | Re: Vision command + linux
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(...) Do you have a web site or something where I could read more about this? ---...--- Steve Baker ---...--- HomeEmail: <sjbaker1@airmail.net> WorkEmail: <sjbaker@link.com> HomePage : (URL) : (4 URLs) GEEK CODE BLOCK----- GCS d-- s:+ a+ C++++$ (...) (22 years ago, 14-Dec-03, to lugnet.robotics)
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| | Re: Vision command + linux
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|
Steve (...) That must be fairly costly if you want bigger offsets and probably fails during a zoom or roll of the camera. (...) Makes sense. If you convert the image into (straight or curved) line segments then its easier and cheaper to match (...) (22 years ago, 14-Dec-03, to lugnet.robotics)
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| | walking robot
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Hi, I find on brickshelf this nice walking robot. I would like to see a video......... (URL) (22 years ago, 14-Dec-03, to lugnet.robotics)
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| | Re: Bump switches and "aggression"
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(...) Actually you don't, you want a different level of sensors to evaluate the environment (eg ir object sensors). You're just complicating your design by putting too many functions on each layer of sensors. For example, something bumps you from (...) (22 years ago, 13-Dec-03, to lugnet.robotics)
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| | Re: Direct Link (was Global Objects was Strange RCX startup issues)
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(...) Ok, I'll take a shot at it: 1) Make a new directory in the root BrickOS directory called pgm. 2) Copy the files config.h and Makefile from the boot directory to the pgm directory. 3) Copy your C files to the pgm directory. 4) Edit config.h (in (...) (22 years ago, 13-Dec-03, to lugnet.robotics.rcx.legos)
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| | Legway going to be revisited
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has anyone used the acceleration sensor from www.techno-stuff.com? i keep thinking that it could be used in conjunction if the IRPD sensor for more reliable balancing....or even as a substitute... also i seem to be having problems posting from my (...) (22 years ago, 12-Dec-03, to lugnet.robotics)
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| |
| | Re: BricxCC release 3.3.7.6
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(...) Thanks! It does work well! My files had a .txt extension. But since I've renamed them, it works beautiful. (...) Very impressive and useful features. (...) Now I get it! (...) You're right (...) I renamed the help files back and it's great (...) (22 years ago, 12-Dec-03, to lugnet.robotics.rcx.pbforth, FTX)
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| | handyboard for sale
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Hi I have few NEW assembled handyboards for sale. if any one interested visit (URL) (22 years ago, 13-Dec-03, to lugnet.robotics.handyboard)
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| | Re: Vision command + linux
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(...) My son is into adding 3D graphics to video footage to create short movies with stuff like flying saucers attacking our car. (URL) out the "Making of" link up at the top somewhere). To do that, we needed figure out where to draw the 3D (...) (22 years ago, 12-Dec-03, to lugnet.robotics)
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| | Re: ROM image using USB tower
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|
Okay, I gave in and bought one of the serial towers listed on bricklink. I now have a ROM image, but am unable to disassemble it. Whatever options I pass to h8300-hitachi-hms-objdump I get: BFD: rom.srec:12: Unexpected character `0' in S-record file (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx)
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| | Re: Vision command + linux
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someone ask me to diffuse my code .... then it's here : (URL) can use it to make your own project. Please read the README and if you have any question mail me nanobapt (22 years ago, 12-Dec-03, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: Vision command + linux
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(...) LOL, thanks (...) I wil try some method to fixe it nanobapt (22 years ago, 12-Dec-03, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | legousbtower and Linux Redhat 9
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|
I'm trying to install the LEGO USB tower on my Linux computer, running Redhat 9 Kernel 2.4 It won't compile. Error messeages are of the type below. How do I work around it? /Hans In file included from /usr/include/linux/sched.h:13, from (...) (22 years ago, 12-Dec-03, to lugnet.robotics)
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| | Re: Vision command + linux
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(...) This is a pretty cool technique! I really like the middle picture (movehead2.jpg) just as a work of art. (...) You could overcome this by subtracting out the minimum pixel change from all pixels. So if the entire picture gets brighter or (...) (22 years ago, 12-Dec-03, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: Avoiding objects
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(...) Dear Roger, In addition to the stuff they sell at www.hitechnic.com there are the following vendors of alternative sensors: www.techno-stuff.com www.mindsensors.com (Of course there are also the sensors from DCP which they sell at (...) (22 years ago, 12-Dec-03, to lugnet.robotics)
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| | Vision command + linux
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|
I've test a new filter for the camera .... In my first study I applied a filter only in one image .... Now I take the "time" parameter ! I make a difference between two image and here is the result When nothing move : (URL) I move my head : (URL) (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: NQC's future
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Sorry for the french .... But the description is true nanobapt (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | Mindstorms enthusiasts around Huntington Beach?
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Hello, Just wanted to know if any list members live in or close to Huntington Beach. Send me an email and we could perhaps meet and exchange designs and ideas. N. (22 years ago, 11-Dec-03, to lugnet.robotics)
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| | Direct Link (was Global Objects was Strange RCX startup issues)
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In lugnet.robotics.rcx.legos, Mark Riley wrote: ... (...) All right, this brings up an interesting question. I can use BrickOS well enough to make it do cool stuff, but I really don't know all the cool stuff BrickOS can do... If I read this (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.legos)
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| | H8 emulator
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Hi, I saw a posting on lugnet from a year ago that you were working on an H8 emulator. Are you still working on it? I need an emulator for the processor for a class I'm teaching... Any info would be great! Thanks, Jason (22 years ago, 11-Dec-03, to lugnet.robotics)
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| | Re: Avoiding objects
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(...) I haven't dabbled with Mindstorms for a while, but I had pretty good luck using the IR on the RCX in combination with a light sensor. Basically, have the RCX continously send out an IR message. The light sensor can detect the IR light when it (...) (22 years ago, 11-Dec-03, to lugnet.robotics)
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| | Re: Avoiding objects
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Steve, Thanks for the info! I've placed an order for the US sensor (well, a pre-order, as they say they'll be shipping orders out only around Jan.2004). They are a little expensive though, I must say. Is this sensor easy to control when programming (...) (22 years ago, 11-Dec-03, to lugnet.robotics)
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| | Re: My problems with adding a Best Fit algorithm for memory management to kernel/mm.c
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Mark Riley wrote: [snip] (...) This is easy enough to implement (1 or 2 lines), but raises the question: Should these memory strategies be included with BrickOS (with a config.h flag to control it)? I am sure the educators would rather leave that (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.legos)
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| | Re: Global Objects was Strange RCX startup issues
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Understood. In this case, I am thinking that the option should be ON by default; such that a new, less experienced user would not encounter a problem; but an experienced user could turn the option off. // Joe (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.legos)
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| | Re: Global Objects was Strange RCX startup issues
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(...) But, it perhaps should default to being enabled as this deficiency has caused some confusion in the past. Great work, Joe! Mark (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.legos)
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| | Re: Global Objects was Strange RCX startup issues
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(...) I opt for option. Not much may be to much in some cases. And I don't want to program in c++ anyway. Regards, Michael (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.legos)
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| | Re: Global Objects was Strange RCX startup issues
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(...) [snipped] (...) I simply added ctor_size and dtor_size to the *image*, *lx* and *program* structures. This allows the program manager to calc the start and end of these segments. (...) It wasn't as hard as I had thought. I have the fix (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.legos)
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| | Re: Avoiding objects
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(...) Roger, I'm happy to tell you my favorite sensor company ( (URL) just started production again) makes something that will work very well for you. (URL) I think their Ultra-sonic sensor is my favorite. I seem to use it more often than any other (...) (22 years ago, 11-Dec-03, to lugnet.robotics)
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| | Avoiding objects
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Hello All, I'm new to the world of Mindstorms and to this list, and I have a question. Upgrading the Roverbot, which backs up when the bumpers feel something, is there a way of avoiding walls and objects on the floor. What is the best way to do (...) (22 years ago, 11-Dec-03, to lugnet.robotics)
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| | Re: BricxCC release 3.3.7.6
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(...) Unfortunately I haven't documented my pbForth support very well. Perhaps the following explanation will be useful to all BricxCC users who want to try pbForth. BricxCC figures out some things based on the extension of the file open in the (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.pbforth, FTX)
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| | Re: Memory, Motors and Odd Things
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(...) no. Ok, that's my first problem. (...) hmm. yep. malloc()... (...) no, using the firmdl3. (...) Yes, it's recursive. And, I'm sure your hunch is right. (...) It sounds like it's the malloc() bug. I'm using 0.2.6.09 (?) I'm not going to switch (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.legos, FTX)
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| | Re: BricxCC release 3.3.7.6
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(...) Wow! I've just discovered Bricxcc! Thank you very much for providing such a useful tool. I'm using PbForth and I was impressed by what you've included in BricxCC. Just to share with you, here's what I did so far. I've renamed the Help file so (...) (22 years ago, 11-Dec-03, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics, FTX)
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| | Re: My problems with adding a Best Fit algorithm for memory management to kernel/mm.c
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(...) <snip> (...) <snip> (...) <snip> I didn't have time to mention this in my earlier post, but this memory dump points out a potential problem with the way BrickOS allocates memory for programs. In the above memory dump, the 0x6B words at 0xB648 (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.legos)
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| | Re: NQC's future
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(...) click thru to: Présentation (URL) I found the English page: (URL) my eye, Babelfish seems to think the French there says: Legnoppix is a version of Knoppix Linux, bootable via CD even in a PC that ordinarily boots Windows. Legnoppix differs (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | Re: Memory, Motors and Odd Things
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(...) Hi Steve, Are you using BrickOS 0.2.6.10? In earlier versions, it was possible for malloc() to return pointers to RAM in the range [F010,FB7F], which was shared with the motor port controller. Writing to this memory adversely affected the (...) (22 years ago, 11-Dec-03, to lugnet.robotics.rcx.legos, FTX)
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| | Re: Logging sensor data
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(...) That's why I use brickOS nanobapt (22 years ago, 10-Dec-03, to lugnet.robotics.rcx.legos)
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| | Memory, Motors and Odd Things
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I ran into something odd, and I'm wondering if someone can explain it. I have a pretty large BrickOS program, (the .lx is about 9k) and it uses around 2k for variables. (I think) I've noticed when the program is running, it's not doing anything with (...) (22 years ago, 10-Dec-03, to lugnet.robotics.rcx.legos)
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