 | | Re: RIS 2.0 upgrade CD? (part 3805)
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(...) 2.0 adds new programming features which are mostly noticeable in the graphical programming environment that LEGO supplies. If you're using a different language, though, then the differences will be handled by the compiler. NQC was updated to (...) (20 years ago, 5-Aug-04, to lugnet.robotics.rcx, FTX)
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| | Re: Add motor driver to RCX
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(...) 1) I'm not sure these are currently available 2) They only give you independent control of two motors per RCX output (but you can connect motors together) 3) They won't work with the 8366 motors (they were designed before those were available) (20 years ago, 5-Aug-04, to lugnet.robotics.rcx)
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| | Re: Add motor driver to RCX
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(...) John Barnes (HiTechnic) has available a motor amplifier which draws it's power from an external source, and can control 4 motors from 1 RCX ouptut. I haven't tried one, but you might find it helpful: (URL) (20 years ago, 5-Aug-04, to lugnet.robotics.rcx)
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| | Re: Add motor driver to RCX
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(...) What does this mean in electrical novice terms? What is an auto-coupler? Is it possible to modify the reciever/power unit to interface with the RCX? ie maybe add an inferred recuever to interpret commands from the rcx to power the motors (...) (20 years ago, 5-Aug-04, to lugnet.robotics.rcx)
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| | Re: laser distance sensor
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(...) Who said you had to actually use laser? :) Google for "electronic tape measure" to see what I'm talking about (they really use sonar, with a laser pointer to show where the device is reading from). Home Depot has one for $29. Now, the biggest (...) (20 years ago, 5-Aug-04, to lugnet.robotics.rcx)
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| | Re: laser distance sensor
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(...) This is an interesting subject and one which generates some interest every so often. The conventional assumption would be that you are talking about LIDAR. The thing is, even if simple plans where available, would you be able to use them to (...) (20 years ago, 4-Aug-04, to lugnet.robotics.rcx)
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| | laser distance sensor
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Hi I'd like to build a laser distance sensor for my mindstorms robot. Does anyone know if any plans of circuits of such sensors exists? Andreas (20 years ago, 4-Aug-04, to lugnet.robotics.rcx)
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| | Re: RIS 2.0 upgrade CD? (part 3805)
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(...) What are the differences between 1.0 and 2.0 firmware? I prefer VB to the supplied software anyway, so that makes no difference. Mark (20 years ago, 3-Aug-04, to lugnet.robotics.rcx, FTX)
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| | Re: RIS 2.0 upgrade CD? (part 3805)
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The Mindstorms SDK 2.5 is still available, which includes the 2.0 firmware. If you don't want the actual 2.0 version of the graphical programming software then this should be all you need. (URL) (20 years ago, 2-Aug-04, to lugnet.robotics.rcx, FTX)
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| | Re: Add motor driver to RCX
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(...) Yes, I suggest making an inertia circuit for use with trains, but for cars something else might be better. In RCX float or braked modes the power H-bridge flywheel diodes will brake the motor, but in high power applications, how often is float (...) (20 years ago, 1-Aug-04, to lugnet.robotics.rcx)
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| | 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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