 | | Re: Use built-in Ir instead of IR-Tower?
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(...) The IR protocol is slightly different. While IRDA only sends short pulses the Lego Tower sends a signal for the whole time slot. It is very unlikely that one can get them work together. Jochen (23 years ago, 30-Sep-02, to lugnet.robotics.rcx.legos)
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| | Spybot to rcx and rcx to spybot
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Hello I am just starting with my first Spybot and want to know how can I use a Spybot to controll an rcx and even better how can I control an spybot with the rcx. I know this has been discussed al lot here but its nearly impossible to filter all (...) (23 years ago, 30-Sep-02, to lugnet.robotics.spybotics)
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| | How to find maximum available memory for datalog, power consumption and sensor wire length?
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Hi there, I'm preparing to write a log program to store temperature values in the datalog. After some experimenting and familiarizing with the datalog associated functions I've found the following: Using CreateDatalog(x) with x being a constant and (...) (23 years ago, 30-Sep-02, to lugnet.robotics.rcx.nqc)
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| | Re: 2 rcx's
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What about hooking a sensor port to a sensor port on another RCX? The sensor ports do output power for active sensors, so I imagine this could be detected by the other RCX. I'm just wondering if this would let you set up bi-directional (...) (23 years ago, 29-Sep-02, to lugnet.robotics)
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| | Re: 2 rcx's
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Scott: (...) Yes it has been done. I used this set up to communicate between 2 RCX in a contest where I new many people would use IR and the room would be flooded with the stuff. The original message is here: (...) What I did was just put a lego (...) (23 years ago, 29-Sep-02, to lugnet.robotics)
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| | Use built-in Ir instead of IR-Tower?
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Hi! i have a sub-notebook without any com-ports so i can't use my IR-Tower. But the built in IR is reachable over com5 (btw: i'm working with cygwin). so i changed dll to com5 (export...) but now i get the error(when dll'ing): Error 21: sending (...) (23 years ago, 29-Sep-02, to lugnet.robotics.rcx.legos)
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| | Instructions for building DJGPP H8300 cross compiler
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The following are instructions I am using for building the Hitachi H8300 cross compiler for the DJGPP environment. Please read through the entire message before proceeding. Download the following DJGPP/GNU packages from www.delorie.com or one of its (...) (23 years ago, 29-Sep-02, to lugnet.robotics.rcx.legos)
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| | Re: Need to compare
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The following link may be of some use, it seems an interesteing design for climbing obstacles. (...) (23 years ago, 29-Sep-02, to lugnet.robotics)
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| | Angle sensor
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I have a couple of prototype angle sensors looking for a good home. (URL) simple devices contain a potentiometer and a small series resistor so they vary from 1k - 11k while the input shaft is rotated through approx. 270 degrees. There is a built in (...) (23 years ago, 29-Sep-02, to lugnet.robotics)
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| | FLL Artic Impact Challenge Set
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Since our FIRST LEGO League teams and robotics class is so inspired by this year's challenge, I would like to spend time later on last year's challenge. Does anyone out there have a last year's playing mat, instructions, accessories, etc., that they (...) (23 years ago, 28-Sep-02, to lugnet.robotics)
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| | Re: Need to compare
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(...) A straight tri-wheel like that can't climb anything higher than half it's height though. If you are really after something that'll climb TALL steps, then it has to have something high up at the front to grab the top of the step with. Even a (...) (23 years ago, 28-Sep-02, to lugnet.robotics)
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| | Re: Need to compare
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Ok, so, the complete description.... It's not really a competition, but a project for students in my university... We have to build a bot with LEGO mindstorms... This bot has to be able to follow a line on a ground made in steel. This line goes (...) (23 years ago, 28-Sep-02, to lugnet.robotics)
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| | Re: Need to compare
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(...) Oh - that's a pain. (...) Well, I guess it depends on how rough the terrain in general is. If it's a flat, smooth surface with just one 5cm hole - then practically any vehicle with (say) 6 wheels will drive across it like it wasn't there. (...) (23 years ago, 28-Sep-02, to lugnet.robotics)
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| | 2 rcx's
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What would happen if you took a wire from a sensor port on one rcx and connected it to a motor output on another rcx. Would this be a viable way to communicate with 2 rcx's if they could not be position for IR communication? My thought was that you (...) (23 years ago, 28-Sep-02, to lugnet.robotics)
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| | Re: Need to compare
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(...) I like the tri-wheel design. If you make if big enough it shouldn't have any trouble. Something like this (or bigger): (URL)For the step, it begins at 1cm and it will be increased until no véhicule is (...) The advantage of an ODEX design. (...) (23 years ago, 28-Sep-02, to lugnet.robotics)
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| | Re: Need to compare
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Thanks, Yes, it's the maximum dimensions... We have already seen the shrimp and we think to build something like that (maybe also with tri-star wheels)... But if somebody find a better solution, because we don't know the comportement of the shrimp (...) (23 years ago, 28-Sep-02, to lugnet.robotics)
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| | Re: some more questions about lnp.
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The frequency of the RCX's IR does not change at all: " The RCX uses a 38kHz carrier, which is pretty typical for TV remotes. As for the sampling rate, the RCX runs at 2400 bps, which makes each bit approx 417us " (URL) think the only way you could (...) (23 years ago, 28-Sep-02, to lugnet.robotics.rcx.legos)
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| | Re: Need to compare
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(...) Is that the *initial* dimensions - or the *maximum* dimensions? If it's just one of those things like "the robot must start off in a box no bigger than 30x60x30" - then it can just fold itself up into that space when they are doing the (...) (23 years ago, 28-Sep-02, to lugnet.robotics)
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| | Re: Need to compare
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Thank you for your idea... but I forgot to say you that I have restriction for the dimensions... Dimensions : height : 30cm Lenght : 60cm width : 30cm And we can have 620 Euro's... Bye Vincent ----- Original Message ----- From: "Mike Thorn" (...) (23 years ago, 28-Sep-02, to lugnet.robotics)
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| | Re: Need to compare
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Vincent, (...) Without knowing the limitations of your resources, I would vote for a legged vehicle. You can make if large enough that even if a leg did go in the hole it wouldn't fall in or get stuck, you could make it with as many legs as you like (...) (23 years ago, 28-Sep-02, to lugnet.robotics)
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