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Hi Stef, sorry for little late. What I am doing is that I need to get the voltahge down and most efficient way of doing that without losing swing ( if you divide you lose swing too) is level shift it and you can do it by putting by Zener. I need (...) (25 years ago, 27-Mar-01, to lugnet.robotics.rcx)
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| | Re: New Group?
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As the author of GBP I get 3 or 4 emails a week about it and there have been 9,647 hits (I just checked) or the download page since I installed the counter about a year ago. My only problem with the idea of setting up a GBP group is that it might (...) (25 years ago, 27-Mar-01, to lugnet.robotics, lugnet.robotics.rcx)
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| | Re: The sound of train
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I don't have any specifically for trains, but my crane has a two-tone warning sound - you can find the programming info at (URL) The warning sound is generated by RCX1. I'm not sure how difficult it will be to translate this into NQC, but basically (...) (25 years ago, 27-Mar-01, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: The sound of train
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Thanks. Could you show me legOS source? (both steam and diesel), I have no idea about music or sound. I can convert it to NQC, what I am using NQC is that I want to make all my programs that can be used both by RCX and Scout. Zhengrong (...) (25 years ago, 27-Mar-01, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: The sound of train
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Your original post mentioned "warning or alert". Are you looking for train sounds, or warning sounds? The train sounds that Sonnich is talking about is actually the puff-puff of a steam engine, and would be very difficult to duplicate with the RCX, (...) (25 years ago, 27-Mar-01, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: The sound of train
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You used hardware? that is not my hoping. Zhengrong (...) (25 years ago, 27-Mar-01, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: New Group?
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(...) Well, sometimes there's only one way to find out -- build it and see if they come. If we create a group/list for it and it turns out DOA then we can either delete it or ignore it. If there's a user-base for GBP, and you've got (...) (25 years ago, 26-Mar-01, to lugnet.robotics, lugnet.robotics.rcx)
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| | Re: The sound of train
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I guess not - I don't even know what it is. All I have seen of this is some schematics of the electronic circuit for it. And that was 1 years ago I think Sonnich Zhengrong Zang <mikezang@iname.com> wrote in message news:3ABEA0D8.2F4462...ame.com... (...) (25 years ago, 26-Mar-01, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: The Making of "Creative Projects with LEGO Mindstorms"
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Cool site, Ben. Looking forward to your book! -- Bob Fay rfay@we.mediaone.net (URL) Erwin" <ben@alum.mit.edu> wrote in message news:GAsADu.56u@lugnet.com... (...) itself (...) (25 years ago, 26-Mar-01, to lugnet.books, lugnet.robotics, lugnet.robotics.rcx)
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| | The Making of "Creative Projects with LEGO Mindstorms"
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(URL) week I had the opportunity to watch my book get printed. The book itself is about the process of making a robot -- so here is a website about the process of making the book -- which itself is very robotic! -Ben (25 years ago, 26-Mar-01, to lugnet.books, lugnet.robotics, lugnet.robotics.rcx)
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| | Re: The sound of train
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Do you have any NQC code? Zhengrong (...) (25 years ago, 26-Mar-01, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: cannot download RCX Code
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(...) You might try disableing the FIFO (if it has one) in the serial port configuration. Depending on what other applications use the serial port, you will probably want to re-enable the FIFO when using those applications. Mike (25 years ago, 25-Mar-01, to lugnet.robotics.rcx)
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| | 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" (...) (25 years ago, 25-Mar-01, to lugnet.build, lugnet.general, lugnet.technic, lugnet.robotics.rcx)
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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 (...) (25 years ago, 25-Mar-01, to lugnet.build, lugnet.general, lugnet.technic, lugnet.robotics.rcx)
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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 (...) (25 years ago, 24-Mar-01, to lugnet.build, lugnet.general, lugnet.technic, lugnet.robotics.rcx)
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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 (25 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 (...) (25 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 (...) (25 years ago, 22-Mar-01, to lugnet.robotics.rcx)
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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... (...) (25 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 (...) (25 years ago, 22-Mar-01, to lugnet.build, lugnet.technic, lugnet.robotics.rcx)
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