 | | Re: Add motor driver to RCX
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(...) Good idea. It will be difficult, though, to determine the differnce between braked and floating motor setting, or am I wrong? Or maybe one should measure the resistance on the RCX terminal, when no voltage is put out. I thought of invading the (...) (20 years ago, 1-Aug-04, to lugnet.robotics.rcx)
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| | Re: RIS 2.0 upgrade CD? (part 3805)
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(...) Noone has it listed on Bricklink right now, but there was a recent Mindstorms survey held on LEGO.com that hints at the possibility that they might be coming out with an RIS 3.0 sometime in the near future. The other alternative is to see if (...) (20 years ago, 31-Jul-04, to lugnet.robotics.rcx)
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| | RIS 2.0 upgrade CD? (part 3805)
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I'd like to upgrade my RIS software to 2.0, but it would appear that Lego no longer sells it. (URL) says "Sorry this item is not available in this country." I called Lego shop today, and they confirmed that it is discontinued. Perhaps someone knows (...) (20 years ago, 31-Jul-04, to lugnet.robotics.rcx)
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| | Re: Add motor driver to RCX
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(...) I'm working on a scheme to do that sort of thing. I propose to use opto-couplers with their LEDs in reverse parallel, connected to the RCX output, and their transistors driving a power H-bridge powered from a separate supply. I can't see any (...) (20 years ago, 31-Jul-04, to lugnet.robotics.rcx)
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| | Add motor driver to RCX
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Have anyone tried to add an external motordriver to the RCX ports, so you can use the powerful 3Amp motors from the 8366 RC car on the RCX? (20 years ago, 26-Jul-04, to lugnet.robotics.rcx)
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| | Re: BrickOS on Mac OS X (restarted ?)
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(...) It seems like MacNQC can be used to download a new firmware on the RCX: (URL) you didn't, you should give it a try. I also had problems downloading firmwares to the RCX through the USB tower with many utilities. Only NQC did it right. Please (...) (20 years ago, 23-Jul-04, to lugnet.robotics.rcx)
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| | Re: Sensor inputs of RCX
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Hi Andreas, (...) this is the pwoer supply for active sensors (light and rotation). It is interrupted briefly every 3ms to sample the value of the sensor. (...) It is done by the microcontroller, every 3ms the OCIA interrupt routine turns off the (...) (20 years ago, 21-Jul-04, to lugnet.robotics.rcx)
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| | Re: Sensor inputs of RCX
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(...) Hi Andreas, Sensor inputs can be configured two ways: 1. Passive - sensor does not need power to operate 2. Active - sensor needs power to operate Active sensor ports put out aproximately 7V most of the time, and drop the voltage (every 3ms?) (...) (20 years ago, 21-Jul-04, to lugnet.robotics.rcx)
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| | Sensor inputs of RCX
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Hi, I'm interested in the electronical function of the three sensor inputs of the RCX. I took an osilloscope and measured the voltage of the ports. So I got to know that a rectangular signal is put on the sensor ports when they are activated by (...) (20 years ago, 21-Jul-04, to lugnet.robotics.rcx)
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| | BrickOS on Mac OS X (restarted ?)
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11 months ago, there was a thread in this newsgroup dealing with the implementation of BrickOS on Mac OS X. I was just wondering whether the situation had changed since then. I've downloaded M. Zapp's port of the GCC cross-compiler and tools, have (...) (20 years ago, 21-Jul-04, to lugnet.robotics.rcx)
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| | Re: Using the RCX for animating LEGO Train displays?
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NGLTC (and other train club) members have been getting creative with their mindstorms. 1) Rail Racers! 2) Lewis Valentine has made a working train drawbridge on the NGLTC layout. It's taken him a lot of tinkering, but it works very well! 3) Street (...) (20 years ago, 19-Jul-04, to lugnet.robotics.rcx)
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| | Re: Using the RCX for animating LEGO Train displays?
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(...) What can you do with an RCX? That doesn't sound very off-topic. :) (...) One name to start with: Brian Alano. He's a member of IndyLUG, and he's done some amusement park rides, and things like that. (...) Most of these things you can ask about (...) (20 years ago, 19-Jul-04, to lugnet.robotics.rcx)
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| | Re: Using the RCX for animating LEGO Train displays?
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(...) Here is one place I've seen stuff that Dave has done: (URL) cross posted to RTLToronto, maybe one of the train guys there could help? -Rob A. (...) (20 years ago, 18-Jul-04, to lugnet.robotics.rcx, lugnet.org.ca.rtltoronto)
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| | Using the RCX for animating LEGO Train displays?
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Please pardon the interruption, as this is probably a bit off-topic, and is more a distraction than a contribution at this point. ;-) I've been looking in the various LUGNET forums, hoping to find a link to a good page of clues for using the RCX in (...) (20 years ago, 15-Jul-04, to lugnet.robotics.rcx)
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| | Re: Light Sensor question
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(...) Sam, By default programming when you configure a sensor input to be a light sensor, it gives you back readings in the 0-100 range (i.e. percentage of the maximum possible reading). To get better resolution (which I expect you might want), you (...) (20 years ago, 15-Jul-04, to lugnet.robotics.rcx)
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| | Re: Light Sensor question
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Thanks, I'm picking up my mindstorm kit today and if I run into any problems, I'll post another quesiton. (20 years ago, 15-Jul-04, to lugnet.robotics.rcx)
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| | Re: RCX datasheet
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Hallo Andreas, (...) not that I know of, but take a look at (URL) , that should answer most questions. This is about RCX 1.0, but the 2.0 is identical w.r.t. software and very similar w.r.t. hardware. If you have further questions, don't hesitate to (...) (20 years ago, 15-Jul-04, to lugnet.robotics.rcx)
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| | Re: Light Sensor question
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(...) Try a DIY CdS cell. See details here; (URL) (20 years ago, 14-Jul-04, to lugnet.robotics.rcx)
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| | Re: Light Sensor question
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Basically there's enough light coming through that it would expose film quite quickly. Also, the ambient does have light in it. If the lego sensor isn't sensitive enough, could I easily replace it with another? (20 years ago, 14-Jul-04, to lugnet.robotics.rcx)
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| | RCX datasheet
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Hello Does anyone know, if any datasheets about the RCX 2.0 are existing? Greets Andreas (20 years ago, 13-Jul-04, to lugnet.robotics.rcx)
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