 | | Re: roboball
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(...) Hi Elizabeth, The red LED serves only as an on/off indicator. And, as it only functions when the battery is fully charged, it is not a very good one. The rest of the LED's are infrared and invisible to the naked eye. One way to "see" the light (...) (19 years ago, 13-Jun-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | roboball
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Hi, I got a roboball and wished to test it out for my group of kids to do a soccer game. When I first received it, one light bulb was lit. I tested it with the lego light sensor, but no reading. Then I connected it to a 9v . Unfortunately, now, the (...) (19 years ago, 13-Jun-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | Re: Real-world interfacing to RCX: LEDs and magnetic sensor
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(...) The motor outputs give a square wave of 1/8 up to 8/8 of a cycle. You can use a counter running at 8x the cycle frequency to measure how many eighths the output is giving, and light an LED accordingly. For the magnetic sensor, I suggest (...) (19 years ago, 9-Jun-05, to lugnet.robotics.rcx, FTX)
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| | rcx programming and flash
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Hello, once time, i've found a site about an api waht can control rcx by flash interface. but i dont find anymore this site thx a lot (19 years ago, 8-Jun-05, to lugnet.robotics.rcx)
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| | Real-world interfacing to RCX: LEDs and magnetic sensor
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I would like to be able to drive one or two banks of 7-8 LEDs off of the motor ports on the RCX. I know that there is a winker board that senses the motor level to determine what pattern to display. Can this be accomplished otherwise? I also want to (...) (19 years ago, 7-Jun-05, to lugnet.robotics.rcx)
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| | Re: advice for robogrip
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(...) Do you mean robot hands? If so, try the one from my robot: (URL) It's actuated with pneumatics at the moment but the two 24mm pulleys have bevel gears linking them, to keep the fingers synchronised, so you could use a motor and low gearing to (...) (19 years ago, 27-May-05, to lugnet.robotics.rcx, lugnet.robotics.edu, FTX)
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| | advice for robogrip
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Hi, I am trying to look for a few lego end effectors configuration. I got the one from CMU's robotics educator. Suggestion will be greatly appreciated. --thanks (20 years ago, 26-May-05, to lugnet.robotics.rcx, lugnet.robotics.edu)
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| | Re: New NQC API for RCX-Spybot or RCX-RC communication
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(...) John, I have a few beginner questions for you. I am trying to emulate the infrared protocol on a different microcontroller. I want it to be able to be controlled by a Lego remote and to send/receive messages to Lego devices. What format does (...) (20 years ago, 21-May-05, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | Re: Group project: RCX units run emergence simulation
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(...) I like the ants idea. What you could have is a "home base" or somewhere the RCX's can return to (some simple sensor based thing), and then a feeding area. In between you have any number of obstacles. The RCX's draw, or follow lines left by (...) (20 years ago, 24-May-05, to lugnet.events.brickfest, lugnet.robotics.rcx)
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| | Re: Group project: RCX units run emergence simulation
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(...) I've never thought of doing it at a mass event (OK, possibly because I've not been to any), but I've thought of doing it on my own. I suspect the biggest drawback is having your RCX's already built into a MOC to bring to BrickFest. (...) If (...) (20 years ago, 24-May-05, to lugnet.events.brickfest, lugnet.robotics.rcx)
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| | Re: Group project: RCX units run emergence simulation
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(...) That's up to John Barnes as Technic/Mindstorms coordinator. It would require a dedicated space all fest, which is hard to come by, and people to coordinate/monitor it, as well as people to devise the standards (may be the same people). So (...) (20 years ago, 23-May-05, to lugnet.events.brickfest, lugnet.robotics.rcx)
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| | Re: Group project: RCX units run emergence simulation
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(...) Which I agree would be a very cool thing to see, especially with some strategic filming. Is there not room for both? Again, it would be neat to include Spybotics as well - depending on the behaviour you are trying to get. (20 years ago, 23-May-05, to lugnet.events.brickfest, lugnet.robotics.rcx)
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| | Re: Group project: RCX units run emergence simulation
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(...) Hi! Cool. Now I'm a cohort ;-) (...) Well, sort of... the robotic forklift I brought to HoB is currently the most complex module (that I *know* about) that requires an RCX, but there are some other options. A ball-sorting mechanism is (...) (20 years ago, 23-May-05, to lugnet.events.brickfest, lugnet.robotics.rcx)
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| | Re: Group project: RCX units run emergence simulation
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(...) TOTALLY agree. Not saying it's not relevant to robotics, there is lots of clever mechanical stuff to be learned from GBC... Just saying it's somewhat in a different direction from leaving a bunch of identical RCX based autonomous mobile (...) (20 years ago, 23-May-05, to lugnet.events.brickfest, lugnet.robotics.rcx)
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| | Re: Group project: RCX units run emergence simulation
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(...) Not having an RCX does not necesarily make it irrelevant to robotics. I consider automatons fairly relevant - and the technique of getting a single motor to do many things is a very valuable one, especially considering the IO limitations of (...) (20 years ago, 23-May-05, to lugnet.events.brickfest, lugnet.robotics.rcx)
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| | Re: Group project: RCX units run emergence simulation
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(...) Right, but haven't you and your cohorts (Hi Brian!) been busily proving that there hasn't yet been a mechanism that NEEDED an RCX? Most of the GBC modules are (brilliantly, elegantly...) purely mechanical except for the train ball return, and (...) (20 years ago, 23-May-05, to lugnet.events.brickfest, lugnet.robotics.rcx)
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| | Re: Group project: RCX units run emergence simulation
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On Sat, May 21, 2005 2:37 pm, Suz said: (...) Suz, While it's not exactly a 'simulation', there is a community project for the robotics/technic areas this year. More will be announced soon, but you can get started by looking here: (URL) (20 years ago, 23-May-05, to lugnet.events.brickfest, lugnet.robotics.rcx)
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| | Group project: RCX units run emergence simulation
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I've wondered about this for over a year now, but haven't brought it up because of not making it to the BF events. Now I can't stand it anymore and must ask. Have RCX owners considered pooling their units to run an event-long simulation? Each of us (...) (20 years ago, 21-May-05, to lugnet.events.brickfest, lugnet.robotics.rcx)
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| | Re: 8 bit timer problem
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(...) Sorry, my mistake. I actually wrote the correct address in the code on my machine. (...) Thanks anyway :) (...) (20 years ago, 20-May-05, to lugnet.robotics.rcx)
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| | Re: 8 bit timer problem
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(...) Looks like a typo - try this in your handler instead: "bclr #6, @0xc9:8 \n\t" // Clear CMFA // (bit 6 of // TCSR) I haven't really checked the rest of the code for anything else, though. HTH, Mark (20 years ago, 19-May-05, to lugnet.robotics.rcx)
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