 | | IR tower problems
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WHile i was plugging in the cable for the IR tower, i heard a snap and noticed that some pins on the plug got shoved halfway into the computer. How should i fix this. Also If i were to get a USB adapter for the plug, and plugged it into the (...) (24 years ago, 14-Feb-01, to lugnet.robotics)
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| | Re: Walkers
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(...) The possibilities are endless. I would start with the sensor and move on from there. The stability and accuracy (precision) requirements will depend heavily on the robot configuration. It does not need to have pointed feet like a ballerina (...) (24 years ago, 14-Feb-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) The two gates he presents seem a little complex and bulky. I think the reason is the choice of representation for the logic levels 0 and 1...and perhaps even the idea of base-2 arithmetic at all. It seems to me that if you chose '0' to be (...) (24 years ago, 14-Feb-01, to lugnet.robotics)
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| | Re: Walkers
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(...) Well, I think your software has to be able to predict (mathematically) what will happen to the robot and the pendulum as it accellerates the motor. You can't rely on the simple "if pendulum in middle all is well" thing. You need to know the (...) (24 years ago, 14-Feb-01, to lugnet.robotics)
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| | RE: Oops! Darn diode/fuse
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Heh...I left out the key word...That being what's the "MAXIMUM" voltage and/or mA it'll take. I want those 'lil motors running with max torque/output -but I'd rather not fry my RCX's 'lil brain. And even #24 guage is just a wee bit too big for (...) (24 years ago, 14-Feb-01, to lugnet.robotics)
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| | Re: Walkers
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I don't know much about mechanics or walkers, but what about a gyro device that's more stable than a rotational sensor. Surely someone out there would know how to use one of these to "balance" a walker. Of course this means powering the gyro to spin (...) (24 years ago, 13-Feb-01, to lugnet.robotics)
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| | Re: Rope Climbing and Can Crushing at BrickBots.Com
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(...) [SNIP] (...) Good idea, but the rules specify that the robot can not start with a store of human provided potential energy (Aside from the batteries in the RCX if you want to be technical). The large weight waiting to drop would be a bunch of (...) (24 years ago, 13-Feb-01, to lugnet.robotics)
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| | Re: Rope Climbing and Can Crushing at BrickBots.Com
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(...) I don't have the time to work on this, but I see a relatively simple way to do this that might work well. Build a column to stack all 3 cans into. Place 3 "spikes" roughly dead center at each can, the RCX powers a bar that moves the spikes in (...) (24 years ago, 13-Feb-01, to lugnet.robotics)
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| | Re: Rope Climbing and Can Crushing at BrickBots.Com
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Hi There, Hmm, you found the loophole! Okay, the rules have been changed to indicate that all cans must be crushed at least 50%. This should prevent the instant win, but still keep the formula as it was. The updated formula is a good one, but since (...) (24 years ago, 13-Feb-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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Sorry if this one has been suggested: (URL) have seen two others, but searches came up empty and didn't someone post a brick sorter that read in a sequence of 1x2 tiles to produce an "order" to be "picked" from hoppers of different colour? Couldn't (...) (24 years ago, 13-Feb-01, to lugnet.robotics, lugnet.general)
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| | Oops! Darn diode/fuse
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So while trying to modify my brick to accept 9v from an AC adapter, I managed to blow the SMT diode/fuse. Anyone know the rating (or part #) of the fuse/diode so I can replace it? While I'm at it, anyone know what voltage/mA the RCX can take as (...) (24 years ago, 13-Feb-01, to lugnet.robotics)
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| | Re: Rope Climbing and Can Crushing at BrickBots.Com
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(...) I'd better submit my model (which is one 2x1 plate and nothing else) it scores 2 points...and may yet win if nobody succeeds in crushing a can and everyone needs more than an RIS set to attempt it! (24 years ago, 13-Feb-01, to lugnet.robotics)
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| | Re: A dream Mindstorms/Technic piece...
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(...) Indeed :-) Perhaps you missed the post I made earlier in this thread (I think it was only on lugnet.technic at that point) where I posted the URL for my compressor device using this battery box? Here it is anyway: (URL) amusement park ride (...) (24 years ago, 13-Feb-01, to lugnet.robotics)
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| | Block & Tackle Mechanisms
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I have added a "Block & Tackle" based LEGO device to my site at (URL) Check it out. Block & Tackle is a formal mechanism, as much as a wedge or lever or gear. It has some amazing benefits. But it's hard to work it into a design and some of its (...) (24 years ago, 13-Feb-01, to lugnet.robotics)
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| | Re: Rope Climbing and Can Crushing at BrickBots.Com
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Doesn't a machine that does nothing score perfectly? If so, my entry is an RCX sitting next to three cans. It finishes the instant it starts. You have a formula time * height * bonus = score, with small being better. So a robot that does no crushing (...) (24 years ago, 13-Feb-01, to lugnet.robotics)
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| | 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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