 | | RE: A dream Mindstorms/Technic piece...
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The Mindstorms touch sensor isn't a switch, but a sensor. You need an RCX or MicroScout to read it's status. It is not suited for directly switching a load like a motor. It can only carry a very small current, and still has a lot of resistance when (...) (24 years ago, 12-Feb-01, to lugnet.robotics)
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| | Rope Climbing and Can Crushing at BrickBots.Com
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Hello All, On Friday February 9th, 2001 the Rope Climbing Contest at BrickBots.Com finished with three completed entries and one standout winner! The contest objective was to build a LEGO robot to go up and down a length of rope as quickly as (...) (24 years ago, 12-Feb-01, to lugnet.robotics)
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| | Re: A dream Mindstorms/Technic piece...
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Jennifer Clark <jen@vulture.dmem.strath.ac.uk> wrote in message news:3A87CF43.4C05B6...h.ac.uk... (...) the (...) a (...) some (...) battery (...) One possibility may be to use a Mindstorms touch sensor to switch it on/off. This would remove the (...) (24 years ago, 12-Feb-01, to lugnet.technic, lugnet.robotics)
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| | Re: OmniRemote Update part II (brief)
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(...) Unfortunately, I have no RCX as of yet - been too busy buying car parts. however, I don't think he's worried about firmware right now, and more worried about just sending basic messages back and forth. Firmware comes later, and I suspect it (...) (24 years ago, 12-Feb-01, to lugnet.robotics)
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| | leJOS article in JavaWorld
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Enjoy! (URL) (24 years ago, 12-Feb-01, to lugnet.robotics, lugnet.robotics.rcx.java)
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| | Re: What kind of plastic?
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PVC pipe cement is the easiest kind of glue to get hold of for gluing Lego bricks. It is "VERY" effective. Use a tooth pick to apply it - you don't need much! As far as axles and other axle related parts, they are made of something quite different - (...) (24 years ago, 12-Feb-01, to lugnet.robotics)
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| | Re: A dream Mindstorms/Technic piece...
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(...) I'm sure it is possible, as the switch on it is also spring loaded and has a "motor on but switch not locked in place" setting. You'll still have to do some lego modification by soldering at least one other cable directly to the battery (...) (24 years ago, 12-Feb-01, to lugnet.technic, lugnet.robotics)
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| | Re: Is an RCX Output Amplfier, possible ?
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(...) Actually, you need four transistors in what is called an H-bridge configuration. This is due to the fact that the motors are usually intended for bi-directional use. If you are only using them in one direction, a single transitor will suffice. (...) (24 years ago, 12-Feb-01, to lugnet.robotics)
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| | POPTRONICS isn't worth it
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For those of you who have seen the March 2001 issue of Poptronics (the "Special Robotics Issue") and been attracted by the words "Lego Mindstorms" in bold type one the cover - believe me, it isn't worth it. In the finest traditions of Popular (...) (24 years ago, 12-Feb-01, to lugnet.robotics)
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| | Re: Walkers
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Thanks for the feedback people. I asked the question because I have been working on a walker for around 6 weeks, and was getting a bit discouraged. I have since had some success on the weekend. My walker will now go through it's complete walking (...) (24 years ago, 12-Feb-01, to lugnet.robotics)
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| | What kind of plastic?
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Hello, Lego is ABS plastic; MEK (Methyl-Ethyl Ketone) is good for glueing it. You might want to search through the lugnet.robotics archive, as there was an extensive thread on this last year. Hope this helps, Simon (...) (24 years ago, 11-Feb-01, to lugnet.robotics)
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| | Re: Scout Troubles****
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(...) sound like your missing the .DLL file, try downloading the scouttool program again. ALex (24 years ago, 11-Feb-01, to lugnet.robotics)
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| | Re: Driving the IR tower.
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You may just have to send out grabage that the RCX and Scout are programmed not to recognize and deal with, or make your own "tower" that just has infrared transistors on the end of it. This is a major problem for many things, and no way has been (...) (24 years ago, 11-Feb-01, to lugnet.robotics)
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| | Re: A dream Mindstorms/Technic piece...
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WOW!! That is an amazing piece of work. Have you figured out if there is a way to do it with a Technic 9V battery box, such as the one included in the Technic Space Shuttle? One thing I have noticed with some motors is that they will turn - or at (...) (24 years ago, 11-Feb-01, to lugnet.technic, lugnet.robotics)
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| | Driving the IR tower.
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I'm trying to drive the IR tower from a C program running on a Linux PC. I find that the IR receiver only operates when the green light is on - and that only seems to go for a split second after I send characters to the tower from the PC. The (...) (24 years ago, 11-Feb-01, to lugnet.robotics)
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| | March 2001 - Poptronics features Robotics - and RCX
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G'Day Subject says it all, next months (on sale now) Poptronics mag. focuses on robotics, one of the articles is an "executive decision maker", basically a teeter totter driven by an RCX, (gross misuse of "The Brick" but it is a start), lots of good (...) (24 years ago, 10-Feb-01, to lugnet.robotics, lugnet.general)
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| | Re: Is an RCX Output Amplfier, possible ?
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You can run about 2 motors off of one output (as the RCX goes into thermal shutdown at 500ma and each motor will (on average) draw 200ma at a stall). Sorry I can't help you with the device part, but (don't let this start flames) can't you just hook (...) (24 years ago, 9-Feb-01, to lugnet.robotics)
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| | Re: A dream Mindstorms/Technic piece...
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(...) Yeah, I'd thought about that, but my application was gonna include an air tank, which would alleviate the problem a bit. Without a tank, there'd probably be a noticable effect, depending on how long your lines are. I've found the Lego ones are (...) (24 years ago, 10-Feb-01, to lugnet.technic, lugnet.robotics)
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| | Re: OmniRemote Update part II (brief)
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(...) Shame it wasn't an RCX. I'd like to be able to be sure of Firmware uploads as well. Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (24 years ago, 10-Feb-01, to lugnet.robotics)
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| | Re: A dream Mindstorms/Technic piece...
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(...) Thanks Huw! It has been improved since you saw it by adding a second compressor pump making the airflow rate far more respectable... I was never really happy with the speed of pneumatic operations when only using the one pump. Jennifer Clark (24 years ago, 10-Feb-01, to lugnet.technic, lugnet.robotics)
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