 | | Re: Struggling with encoder wheel
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(...) You could make a big wheel made of lego plates, and put smooth ones on top for 'colors'. Then you could use a touch sensor, and use the difference between the low spots and the high spots as 1 location. Do you really need to know the direction (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Looking for orthogonal motion
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Hi David, I have built a robot that does this for a university 'robot maze solver' project. My solution is big, ugly, very slow and pretty complex. It could probably be improved a lot if it was redesigned. However, it uses 3 motors (1 for (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Struggling with encoder wheel
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(...) I was wondering how you were handling the edge conditions. Have you tried making a wheel which is a continuous gradiant from black to white over the 360 degrees of rotation? Lookup wouldn't be required as there would be a direct relationship (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Pneumatic Pump Testing Goes Hi Tech
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(...) My answear to that is of course unprintable (although it starts with 'P' and ends with 'off') :-) ha ha ha... Steve (24 years ago, 12-Apr-01, to lugnet.robotics, lugnet.technic)
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| | Problems with the scout
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I downloaded the program from RCX Command Centre to my scout. I then pressed run, but it didn't run the program. It wasn't to big because it was it was only 'On(OUT_A);'. Does anybody know what to do? TNX (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: 2.0 Firmware
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In article <GBn3FD.Cw5@lugnet.com>, Dean Hystad <dean.hystad@mts.com> writes (...) What and where would the 'DLL' path be?? (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Amiga Software
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(...) ... in the US. It was HUGE in Europe, esp. UK and Germany. -Simon (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: 2.0 Firmware
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(...) The DLL path is the directory that the *.dll files are located (dll standing for Dynamic Linked Library). You probably unzipped all the files into one directory. If this is the case then all the paths should be to that directory. Make sure (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Internet Controlled Robots
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I am wanting to begin experimenting with web based control of the RCX using RoboLAB 2.0 but have not been able to find any information. Can anyone kindly lead to some resources? I have only the knowledge that this can be done, nothing else. (24 years ago, 12-Apr-01, to lugnet.robotics.rcx.robolab, lugnet.robotics.edu, lugnet.robotics)
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| | Re: Struggling with encoder wheel
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Chris, This idea would require an additional motor, but, an alternate approach might be to create your wheel with 36 alternating grey and white (perhaps by having a third or fouth shade/color you could have more information) segments. Then, in each (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | two RC servo motor interface to the RCX
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Hi All, the idea to control two RC servo motors via the RCX was a new challange to me and now, after finding a solution, (see www.inchlab.com) i'd like to know if some one else also figured out a diferent solution to this problem? Let me know... (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Battery Tests
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The Unibots tested a bunch of different batteries in preparation for the Northern California State FLL tournament last December, without a doubt the Energizer e2 Lithium batteries (the kind in a blue package) outperformed all others, lasting through (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | RE: two RC servo motor interface to the RCX
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(...) Try: (URL) It requires pbForth, but you can build the servo encoder with only a few basic parts, not mocrocontroller! Cheers, Ralph (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Struggling with encoder wheel
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(...) Hey, that was a great idea! I couldn't use ?/: to do it (NQC doesn't know those operators), had to actually write out all the if/else, but I actually just added it into my wheel generation program, so it printed out the function for me and I (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Internet Controlled Robots
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(...) Try this: (URL) (24 years ago, 12-Apr-01, to lugnet.robotics.rcx.robolab, lugnet.robotics.edu, lugnet.robotics)
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| | Re: Struggling with encoder wheel
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(...) The light sensor just doesn't have that kind of resolution. I'd never get a very accurate position by doing that, I wanted a finer positioning system than I can get from using a rotation sensor. I'm trying to build something that's got (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Struggling with encoder wheel
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(...) I thought about something like that, but using 2 wheels and 2 touch sensors, not just one, and using my 2 bit encoding system like on the light sensor wheel. But I'm not sure how to build small round things out of Lego that have 36 divisions (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Struggling with encoder wheel
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(...) You could build a rotation sensor found on Michael Gaspari's site, using a magnetic strip. It is supposed to give 40 or so counts per revolution. Andy (...) -- See my Visual Interface for leJOS at (URL) (24 years ago, 13-Apr-01, to lugnet.robotics)
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| | Re: Struggling with encoder wheel
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(...) Yah, but if I'm gonna build my own sensors, there's a lot I could do. I'm sort of a purist. I'm trying to stick with the stock sensors so that most people can build a copy of my system. Printing out something on a printer and gluing it to (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Struggling with encoder wheel
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Hello, (...) What is Lego made out of? ==> ABS plastic What can you buy in sheets with the same thickness as Lego? ==> ABS plastic So what I would do if I were you is go to a modelbuilder's supplier and ask for a sheet of ABS of 1.5 (?) mm thick. (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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