 | | Re: What are good LEGO robotics challenges?
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(...) Thanks for the reply. Would you please explain the balance beam tug-of-war in more detail? I just can't picture it. Also, "sentience" is pretty vague. Could you expand on that, too? Thanks a lot! (22 years ago, 31-Aug-03, to lugnet.robotics, FTX)
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| | Re: What are good LEGO robotics challenges?
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(...) A good place to look would be several of the Lego robotic club's web pages. SMART: (2 URLs) are other groups in the US as well. (URL) is one example. I'm sure there are several others. If that's not enough for you, ITLug used to have a list (...) (22 years ago, 31-Aug-03, to lugnet.robotics)
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| | Re: What are good LEGO robotics challenges?
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(...) I don't know of any lists, but here are a few more to add to yours: tug-of-war (different from sumo in that they'd have to grip a rope) (for those who are willing to risk damaging the RCX) balance-beam tug-of-war skeet-shooting (probably have (...) (22 years ago, 31-Aug-03, to lugnet.robotics, FTX)
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| | What are good LEGO robotics challenges?
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I'd like to know all the different LEGO robotics challenges you've seen or heard about. If anyone knows of a comprehensive list that already exists, please give me a link to it. Otherwise, I'm going to make my own list, which I would have on a (...) (22 years ago, 31-Aug-03, to lugnet.robotics, FTX)
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| | Re: RCX 2.0 circuit board changes
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Phillippe, Excellent, thanks a lot. That's exactly what I needed to know and the pictures are crystal-clear. :-) So it only LOOKS really different... Thanks again, ~Mike (...) (22 years ago, 30-Aug-03, to lugnet.robotics)
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| | Re: RCX 2.0 circuit board changes
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(...) Hello Mike, Here is a photograph (actually a scan) of all three versions (1.0, 1.5 and 2.0) of RCX: (URL) had a look at a few RCX 2.0 printed circuit boards, and at first sight they are identical. 1.0 contained the rectifier and regulator for (...) (22 years ago, 30-Aug-03, to lugnet.robotics)
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| | Re: Maths functions
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(...) That's nor really difficult ... nanobapt (22 years ago, 30-Aug-03, to lugnet.robotics.rcx.legos)
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| | RCX 2.0 circuit board changes
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After reviewing some pictures of the RCX 2.0's circuit board today, I noticed that they are quite different. Can anybody tell me the reason why? What changed and how does it affect the RCX? I'm looking for that infamous diode that so often blows (...) (22 years ago, 30-Aug-03, to lugnet.robotics)
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| | Re: Maths functions
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Natural log (ln), and square root. Also useful would be x^y where x and y have fractional parts. I see you have done it with just x as a float and y as an int. This would incorporate the square root by doing x^1/2 "nanobapt" <nanobapt@wanadoo.fr> (...) (22 years ago, 30-Aug-03, to lugnet.robotics.rcx.legos)
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| | Re: Maths functions
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(...) What do you need more than I wrote ? nanobapt (22 years ago, 30-Aug-03, to lugnet.robotics.rcx.legos)
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| | Re: Maths functions
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I've posted an enhancement request on the sourceforge website for someone to write a full math.h. I would do it myself but my programming skills aren't very good. Your math.h looks like a good start. Hopefully someone will build on that. Thanks for (...) (22 years ago, 30-Aug-03, to lugnet.robotics.rcx.legos)
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| | Re: Maths functions
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(...) (URL) (22 years ago, 29-Aug-03, to lugnet.robotics.rcx.legos)
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| | Re: Current state of pbforth
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(...) BricxCC is making some progress with respect to pbForth support. I've got a terminal emulator of sorts that is working. I just need to get it hooked into the rest of the application and add XModem downloading to it. By late next week it might (...) (22 years ago, 29-Aug-03, to lugnet.robotics.rcx.pbforth)
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| | Maths functions
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I'm having trouble finding a maths header file. It's usually called "math.h". I need to do stuff like sine and cosine, and use the "abs" function to make a number positive. Does a file like this exist? Are there any plans to incorporate a maths (...) (22 years ago, 29-Aug-03, to lugnet.robotics.rcx.legos)
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| | RE: Current state of pbforth
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(...) Yeah, I haven't quite got around to implementing cut-and-paste... You can use Hyperterminal or any other similar teminal emulator set to 2400,n,8,1 once the firmware is loaded. Unless you have a USB port. OK, if you really need this, then I (...) (22 years ago, 29-Aug-03, to lugnet.robotics.rcx.pbforth)
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| | Re: My students' creation
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(...) It's nice to see a mobile robot with a pneumatic claw. I´ve been working on the idea for some time by now. I came up with a compact version of the UBS compressor with valve that could be very suitable for these kind of applications. I´ve just (...) (22 years ago, 29-Aug-03, to lugnet.robotics, FTX)
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| | Re: Threads within threads
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(...) Have you tried to run this code? I wonder what will happen "in real life". Actually, main will start monkey and cow as fast as possible. I think this will crash your stack after a short while. Regards, Michael (22 years ago, 29-Aug-03, to lugnet.robotics.rcx.legos)
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| | Threads within threads
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Is it possible to use threads within threads? In the example below (with all 6 threads having different priority levels), how does the priority setting of each thread affect it being executed earlier than other threads? I mean, I assume that thread1 (...) (22 years ago, 27-Aug-03, to lugnet.robotics.rcx.legos)
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| | Re: leJOS & BricxCC news
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(...) works (...) and (...) as to (...) BrickOS (...) both (...) I'm no expert on leJOS, but I've experienced a similar problem with my LDCC firmware and the NQC downloader. Originally the memory sequence in my .srec file was non-contiguous (i.e. (...) (22 years ago, 29-Aug-03, to lugnet.robotics.rcx.java)
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| | leJOS & BricxCC news
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I have BricxCC compiling and downloading leJOS programs now. The support for leJOS is integrated in much the same way as BrickOS support is. BricxCC generates a Makefile and executes it using Bash. So GNU make and bash are required for it to (...) (22 years ago, 29-Aug-03, to lugnet.robotics.rcx.java)
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