 | | Re: Analogue Control of Pneumatics
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Perhaps TLG should be meeting companies that produce valves of the same quality as those mentioned. It also sounds like the timing belt used for the test bed could be replaced or reinforced even more. -- Cheers ... Geoffrey Hyde "Xanthra47" (...) (24 years ago, 25-Mar-01, to lugnet.build, lugnet.general, lugnet.technic, lugnet.robotics.rcx)
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| | New Version of MacNQC
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Hello, I have just released the final version of MacNQC 2.2. This release incorporates the latest (2.2 r2) version of the NQC compiler. Find and replace were added. An Auto indent mode in the editor was added. New RCX test and control panels were (...) (24 years ago, 25-Mar-01, to lugnet.robotics.rcx.nqc)
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| | Re: Analogue Control of Pneumatics
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Yep, and if you combine those high-speed, high-precision pressure regulators with low stiction cylinders and a fast PID controller you can get even better accuracy and repeatability. When I was working for an encoder company, I scavenged some parts (...) (24 years ago, 25-Mar-01, to lugnet.build, lugnet.general, lugnet.technic, lugnet.robotics.rcx)
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| | Obstacle detection : infrared sensor ??
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Hey.. I don't know if this is a LegOS question, but here it goes... Is it possible to detect obstacles via the infrared sensor, before you bump into them ?? Like measuring reflection of infrared light or something... If it is... how ?? can anybody (...) (24 years ago, 24-Mar-01, to lugnet.robotics.rcx.legos)
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| | Re: Analogue Control of Pneumatics
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Hi I did some 'research' in this area about three years ago for the control of a pneumatic robot arm. It was quite simple positional control ie position the piston at any point in the cylinders stroke and hold it there. The controller was just a PC (...) (24 years ago, 24-Mar-01, to lugnet.build, lugnet.general, lugnet.technic, lugnet.robotics.rcx)
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| | Re: NQCEdit
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Dear two, I like your program very much. I have three suggestions: 1. Give a progress indication when downloading or uploading, if possible. 2. Identify unsaved changes by an asterisk behind the filename in the titlebar. 3. Allow to copy from the (...) (24 years ago, 23-Mar-01, to lugnet.robotics.rcx.nqc)
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| | Re: The sound of train
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(...) In a search at trains.com, i have found this message board: (URL) is a message board for model railroading, and may be very helpful to you. Josh (24 years ago, 23-Mar-01, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: Analogue Control of Pneumatics
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Whoa. Not entirely correct. You can do accurate positioning with pneumatics, it's just harder to do than with hydraulics, because you have to take air compressiblity and seal "stiction" into account if you want to hit an arbitrary position that's (...) (24 years ago, 22-Mar-01, to lugnet.build, lugnet.general, lugnet.technic, lugnet.robotics.rcx)
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| | Re: light sensor multiplexer
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hi Nitin, I'm an energy freak to, but I can't follow your reasoning Because I'm building a multiplexer too (probably will be posted next week, so I can make still some changes) and I'm using even lower resistor values then Michael (due to a (...) (24 years ago, 22-Mar-01, to lugnet.robotics.rcx)
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| | Re: video game type thing...
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(...) Are you doing the if() in some kind of loop, or an event function? If the button isn't pressed at the exact time you happen to execute the statement, it won't work. It's difficult to help debug your code without seeing your code 8?) ROSCO (24 years ago, 22-Mar-01, to lugnet.robotics.rcx.legos)
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| | Re: The sound of train
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I don't have any .dat or .wav files, but te create steam engine sounds, use white noise and pulse it. This is an old trick for that. Sonnich Zhengrong Zang <mikezang@iname.com> wrote in message news:3AB96E4A.45E7A5...ame.com... (...) (24 years ago, 22-Mar-01, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: Analogue Control of Pneumatics
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(...) I wouldn't say that at all. Its just that you'd need a good supply of compressed air (there's plenty of compressor designs about) and a good feedback mechanism. This is by no means impossible - just a bit tricky. ROSCO trimmed lugnet.general (...) (24 years ago, 22-Mar-01, to lugnet.build, lugnet.technic, lugnet.robotics.rcx)
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| | Re: Analogue Control of Pneumatics
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(...) Ok. So you can't do it with pneumatics. Looking around for alternative ways of making a power steering mechanism, I found this link (URL) which gives an RCX based motor driven mechanism that might be of interest to others. Al Telanco (24 years ago, 22-Mar-01, to lugnet.build, lugnet.general, lugnet.technic, lugnet.robotics.rcx)
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| | Re: video game type thing...
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(...) havent followed the whole conversation here, but if ur doing an "if "test and it doesnt hit when it should, you might consider displaying the TOUCH_2 variable on the display just before the "if" test, it might not be what you think it is! (...) (24 years ago, 22-Mar-01, to lugnet.robotics.rcx.legos)
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| | video game type thing...
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Well, it still doesn't work even with the if(TOUCH_2){} instead of if(TOUCH_2 == 1){} . Any ideas? Nick H. (24 years ago, 22-Mar-01, to lugnet.robotics.rcx.legos)
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| | Re: light sensor multiplexer
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"Nitin Patil" <gn1721@lycos.com> wrote in message news:GALoKA.Eto@lugnet.com... (...) mA (...) If you use my simple approach, you need 4.7k and around 0.1uF. You need a low enough resistance to guarantee that the voltage drops to CMOS logic level 0 (...) (24 years ago, 22-Mar-01, to lugnet.robotics.rcx)
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| | RE: Ooooops!
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(...) You're right Mario. Like everyone else, I'm busy at my real job, but when I get time here and there I'm making improvements to the kernel. One idea was to provide multi-tasking built-in and having a standard button driver will help with (...) (24 years ago, 22-Mar-01, to lugnet.robotics.rcx.pbforth)
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| | Re: light sensor multiplexer
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In lugnet.robotics.rcx, Michael Gasperi writes: Ok I agree what you say about time constant of your RC But still by using such low resistance you are wasting power. almost 1.5 mA is flowing through this 4.7K. you can keep RC constant and increase R (...) (24 years ago, 22-Mar-01, to lugnet.robotics.rcx)
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| | Re: Ooooops!
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(...) it? (...) From what I understood (I might be wrong) while the pbforth kernel is running the buttons have no predefined action, so there's no way to make the RCX sleep without using the terminal console. Of course you can do that in your own (...) (24 years ago, 22-Mar-01, to lugnet.robotics.rcx.pbforth)
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| | The sound of train
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I need the the dat of sound of train warning or alert for my RCX controlled train projects, does anyone help me? Zhengrong (24 years ago, 22-Mar-01, to lugnet.robotics.rcx, lugnet.trains)
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