 | | RE: Motorized landing gear question
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You might also want to check out the landing gear for the 8480 Space Shuttle (my all-time favorite set, BTW :) on Lugnet. It uses shafts and cogs to move the landing gear, but when the landing gear is extended the weight is borne by the frame of the (...) (23 years ago, 7-Feb-02, to lugnet.robotics)
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| | BricxCC release 3.3.3.7
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I've just uploaded a new release of BricxCC. Version 3.3.3.7 completes the implementation of the configurable Tools feature. Transfer item parameter macros are now functional. The major feature enhancement in this release, however, is the addition (...) (23 years ago, 6-Feb-02, to lugnet.robotics.rcx.nqc)
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| | Re: Sensor Connector
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Info on doing this is at (URL) . The male strip header is 929400-01-36-ND from Digikey. Fred (...) (23 years ago, 6-Feb-02, to lugnet.robotics.handyboard)
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| | Re: Sensor Connector
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(...) Oh, that's easy. Just check out your local electronics store. I don't know if there is a Fry's Electronics in your area, but they have them. Radio Shack? I don't know, but I would assume anyone who sells electronic components would have them. (...) (23 years ago, 6-Feb-02, to lugnet.robotics.handyboard)
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| | Re: Sensor Connector
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(...) Actually what I was looking for was how to make the male header pins to connect to the HB. Is there anywhere to buy them or how did you make them. Thanks for your answer, brendan (23 years ago, 6-Feb-02, to lugnet.robotics.handyboard)
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| | Re: Sensor Connector
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(...) Actually, you can make a half way decent replica of the Lego two plate high connector at this point quite easily. When you prepare the 2x2 piece of the electric plate, cut the center circular section away from the underneath. Then, solder the (...) (23 years ago, 6-Feb-02, to lugnet.robotics.handyboard)
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| | Re: Sensor Connector
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I've bought some lego electric plates (part 5037) from lego.com, and they seem to be withstanding the heat of a soldering iorn quite well (that was my fear... that I would turn them into bubbling messes). Actually they're holding up better than the (...) (23 years ago, 6-Feb-02, to lugnet.robotics.handyboard)
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| | Sensor Connector
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I currently have lego motors and wires that I have used with the RCX but now Im using the Handy Board. The book explains how to connect the motor to the handy board by connecting a wire to a sensor connector but it doesnt state where to get such a (...) (23 years ago, 6-Feb-02, to lugnet.robotics.handyboard)
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| | Re: Ultrasonic Sensor
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(...) Sound travels on the order of 333m per second, so with the 3ms interval between sensor readings you will get a resolution of 1m. You could try some heavy machine level hackery inside legOS or leJOS to read the sensors in a shorter interval, I (...) (23 years ago, 6-Feb-02, to lugnet.robotics)
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| | Re: Ultrasonic Sensor
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(...) let (...) Thanks for that Steve. My circuit will be based on the latter of the two possibilities. It is based on a design by RA Penfold from Electronics and Beyond (Sept.2001) so I'm basically doing construction by numbers! However, the thesis (...) (23 years ago, 6-Feb-02, to lugnet.robotics)
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| | Re: Ultrasonic Sensor
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(...) Yep - I thought so...for things like cameras where these things are in common use, the need is only to know the range to the nearest object. I don't even know if the other things (multiple object detection and size/reflectance estimation) are (...) (23 years ago, 6-Feb-02, to lugnet.robotics)
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| | Re: Ultrasonic Sensor
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(...) let (...) Thanks for that Steve. My circuit will be based on the latter of the two possibilities. It is based on a design by RA Penfold from Electronics and Beyond (Sept.2001) so I'm basically doing construction by numbers! However, the thesis (...) (23 years ago, 6-Feb-02, to lugnet.robotics)
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| | Help with Homebrew sensor
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Hi all, my name is Francis (from Spain). I've read Extreme MindStorms and I decided to put my hands on and build some new sensors. I began with the optointerrupter, but have a little trouble. When I connect the sensor to the RCX I can't get a stable (...) (23 years ago, 6-Feb-02, to lugnet.robotics)
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| | Re: Ultrasonic Sensor
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(...) I guess the first question I'd ask is "What interface does the sensor present to the RCX?" I imagine there are two possibilities: It could be a raw interface that let you send an acoustic "PING" on command and read a voltage back telling you (...) (23 years ago, 6-Feb-02, to lugnet.robotics)
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| | Real time operating system resources
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Now that my interest has been piqued by the multiplexer problem (and sensing problem in general), what would some of you hardened embedded/real-time system veterans recommend for reading on the subject. Two books that I've found at Amazon.com are (...) (23 years ago, 6-Feb-02, to lugnet.robotics.rcx.legos)
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| | Ultrasonic Sensor
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Hello all. This topic might be a bit old hat for some of you, but as a relative newbie to the world of Mindstorms, I'm posting in the appeal for any information on Ultrasonic Sensors. The brief of my honours project was to design and build one such (...) (23 years ago, 6-Feb-02, to lugnet.robotics)
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| | Re: Power to RCX
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Success! It works now, and gives 9.2 volts according to the RIS software. You were right, I did have it backwards. Thanks. (...) (23 years ago, 5-Feb-02, to lugnet.robotics.rcx)
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| | Re: multiplexor and legOS
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(...) I'm just checking this thing out. You can look at: (URL) more information. Unfortunately, I got the .ps description file but not the source code patch file. A mail asking for it is on it's way ;) Mike (23 years ago, 5-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: multiplexor and legOS
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(...) Actually, something like this has been documented and done by Pedersen, Christensen, Rasmussen ("Prioritized Interrupts in LegOS"). They actually document the problem of sensor misses related to task management, significantly reducing the (...) (23 years ago, 5-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: Running Vision Command on XP
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(...) I now have Studios up and running within XP. I had to download a new driver from the Logitech site for the camera and then it was just a case of setting the compatibility option for Lego Studios so that it thinks it is still running in Win (...) (23 years ago, 5-Feb-02, to lugnet.robotics.vc)
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