 | | Re: Pneumatic valve mystery
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(...) When you say it "misses a command", do you mean that you don't get the touch sensor pressed once in a while? Or the motor doesn't turn when you want it to? If it is the touch sensor issue, maybe the round brick+boat plate that are not close (...) (22 years ago, 26-Dec-03, to lugnet.robotics)
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| | Pneumatic valve mystery
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I am a novice robot builder and programmer who needs some help with a random problem that affects a pneumatic system I have built. I want a general purpose basic pneumatic system that can be programmed to use any of the three positions of the (...) (22 years ago, 26-Dec-03, to lugnet.robotics)
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| | Pneumatic valve mystery
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I am a novice robot builder and programmer who needs some help with a random problem that affects a pneumatic system I have built. I want a general purpose basic pneumatic system that can be programmed to use any of the three positions of the (...) (22 years ago, 26-Dec-03, to lugnet.robotics)
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| | Re: Lightsensor
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If I shine a bright light into the light sensor it gets to 60 sometimes, but if I put the light sensor very close to a lamp, it gets to 100. I could never get a value lower than 25. "Michael Gasperi" <gasperi@alynk.com> wrote in the message (...) (22 years ago, 25-Dec-03, to lugnet.robotics.rcx)
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| | Pseudo Proportional Control Re: RC Nitro Flash and RCX
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(...) Philo, All I believe that if we can control the rate at which we send commands to a Nitro Flash a simple pseudo proportional control can be implemented. Has anyone tried it? All the best and Happy Holidays -Andrea (22 years ago, 24-Dec-03, to lugnet.robotics)
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| | 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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