 | | Re: RCX Controlled Air Compressor Tester
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(...) Thanks, Indeed, my first attempt was to use a rotational sensor positioned with the axle at the pivot point of the lever arm and tried to datalog the angular movement using DACTA Control Lab. However, the resolution of the rotation sensor (...) (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx)
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| | Re: RCX Controlled Air Compressor Tester
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A Lego testing machine for Lego compressors... wow, one of the coolest Lego things ever seen around! I love the idea and love your implementation, and find your results very useful. BTW, I think that the Ralph Hempel's double-action compressor (...) (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx)
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| | Re: RCX Controlled Air Compressor Tester
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Nice work! For a while it looks that you could travel back in time using this recording device, before you realize that the pen draws an arc when the paper doesn't move ;-). Could it be possible to add a rotational sensor and datalog the time and (...) (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx)
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| | Re: RCX Controlled Air Compressor Tester
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(...) Thanks for the nice comments and suggestions. As a matter of fact, I'm working towards a doctorate in Legorobotology, majoring in Pneumatics (what else) from the University of Legoland, if not MIT :-)) -- C S Soh (URL) where air is power (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx, lugnet.technic)
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| | Re: RCX Controlled Air Compressor Tester
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(...) Er, <wipes egg off face> never mind. They're on the next page. Missed that the first time. However the Limit switch reference probably should be changed. I merely hosted the diagram that I was mailed, and I cannot take credit for coming up (...) (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx, lugnet.technic)
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| | Re: RCX Controlled Air Compressor Tester
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Wow. Did you do that for a paper or thesis? Very worthy research with a surprising outcome. I am sure most of us would surmise that the big sprung cylinder would give more efficacious designs because the displacement would be larger. This site (...) (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx, lugnet.technic)
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| | Re: RCX Controlled Air Compressor Tester
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(...) Thanks, The Advanced Pneumatics Set is Lego DACTA #9633. It's a great set to start pneumatics although its considered a bit expensive. It's pictured at my page on: (URL) S Soh (URL) where air is power (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx)
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| | Re: RCX Controlled Air Compressor Tester
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Thanks for the great comparison between compressors! I have been wondering which one was actually the best. Now to make a better one! One question though, what is the set number for the Advanced Pneumatics Set? Great Work! John Matthews C S Soh (...) (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx)
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| | RCX Controlled Air Compressor Tester
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Hi, all pneumatics fans, For some time I've been trying to figure out how to objectively compare the performance of the various air compressor designs especially the ones using the large pneumatic hand pump which seem to be coming into fashion (...) (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx)
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| | Re: Decoding the LEGO IR remote control
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(...) [snip] Thanks to all you have responded to my plea for help on this list and on others ... especially Dave Baum, Kekoa Proudfoot, Dennis Clark, and several others. But, I'm giving up ... can't seem to find a way to decode the remote's signals. (...) (25 years ago, 25-Sep-99, to lugnet.robotics.rcx)
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| | WebSpirit - Javascript RCX Controller
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Some of you may have heard of my WebSpirit, well, I've taken in, improved appearances, cleaned up some code, and moved it to my domain. Cybermaster support is planned. Please note, this does not control anything on my computer! I don't know about (...) (25 years ago, 25-Sep-99, to lugnet.robotics, lugnet.robotics.rcx)
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| | Re: Listening to IR via NQC
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(...) Cool, that'd be great. What I'm looking for is: nqc -listen and then all IR messages sent by the RCX via SendMessage would get dumped, one per line, in decimal, to stdout. Additional parameters could make the format be comma-delimited, (...) (25 years ago, 24-Sep-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Re: Listening to IR via NQC
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(...) You can sometimes fake it by sending "bad" codes in -raw mode with verbose mode turned on (-v) and a long timeout (-t). For example, to examine the Lego remote codes I kept typing this: nqc -v -t 2000 -raw 10 Since I didn't have an RCX around (...) (25 years ago, 24-Sep-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Re: Listening to IR via NQC
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(...) Yes, that is what I'm looking for. Unless anyone else knows of anything, I guess it's time to dive into the coding. :) (...) Yeah, that would work great. Does anyone have code that does this? (Don't want to reinvent the wheel...) I know of (...) (25 years ago, 24-Sep-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Re: Listening to IR via NQC
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(...) If I understand you correctly, then this is more difficult than it sounds, because the IR tower shuts down after a few seconds after the PC stops transmitting. Things work fine if the PC initiates a conversation (e.g. by asking the RCX to send (...) (25 years ago, 23-Sep-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Listening to IR via NQC
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I know that NQC can send IR messages; can it -- or any other command-line program -- listen to the IR port and dump any incoming messages to a file (or stdout)? (25 years ago, 23-Sep-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | NQC mentioned in Swedish technical weekly!
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Hello! When reading this week's 'Ny Teknik' (New Technic), a weekly magazine for engineers, I found a short note about NQC. The article is about Lego Mindstorms, which is just about to be released here in Sweden, and the last part of the article (...) (25 years ago, 23-Sep-99, to lugnet.robotics, lugnet.robotics.rcx.nqc)
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| | Re: NQC 2.0 and some math questions
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A bug in the document. * and / are legal for any expressions. % is restricted to constants. I know the restrictions are confusing. The problem is that the RCX opcodes are somewhat incomplete. Now that I think about it, I can probably generate (...) (25 years ago, 23-Sep-99, to lugnet.robotics.rcx.nqc)
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| | NQC 2.0 and some math questions
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Dave, You state in your documentation that * / and % can be used on constants only, but your example has x * Y in it. What is it that you mean? Does this mean that one can only do a y = 5*4 using these math routines? Does this mean that, for (...) (25 years ago, 22-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: NQC 2.0 has been released
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(...) Yep, you got me. Should've been "one bug report". Dave (25 years ago, 22-Sep-99, to lugnet.robotics.rcx.nqc)
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