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 | | RE: moving in a straight line with two motors?
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| Uhh --- that was a stupid comment, wasn't it? How do the Lego guys guard (or shield) against the possibility of the motor magnets disrupting the electronics or memory onboard the RCX? Carl (with a very red, I-can't -believe-I'm-an-engineer, face) (...) (26 years ago, 13-Nov-98, to lugnet.robotics)
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memory
(score: 0.990)
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| | Re: Pnumatic Vavles for Mindstorm
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| (...) Well I must admit that this and the shape memory wire idea are the first two things I've heard suggested that might tempt me away from my official-LEGO-only attitude. The standard LEGO pneumatic valves are no fun at all (who'dathunk they'd (...) (26 years ago, 22-Nov-98, to lugnet.robotics)
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memory
(score: 0.990)
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| | Re: Tachocount
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| At least there's one thing that CyberMaster proved - That 3 inputs is not the limit of the H8 or even all the LEGO PBricks. Clearly CyberMaster have 5 inputs, although 2 of them are fixed just like the 2 fixed motors (which is not as bad as it (...) (26 years ago, 11-Nov-98, to lugnet.robotics)
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memory
(score: 0.990)
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| | RE: Charging Batteries
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| The HB wall plug charger MIGHT do the job, sort of... Generally you need a charger that makes about 15V under load to charge a 12V (nominal) battery pack. Do NOT use an auto battery charger unless you have a way to reliably control the CURRENT to (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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memory
(score: 0.990)
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| | Data Storage/Retreival
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| I was wondering how you store data, in the RCX memory and then retreive it. Reason is I am designing a Mapping Robot and will need to be able to store map data and later retreive it. There are AND & OR Commands so I have the means to set/read bits. (...) (26 years ago, 23-Nov-98, to lugnet.robotics)
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memory
(score: 0.990)
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| | RE: expand memory HB
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| I'm running IC 3.2 and am curious why this fails : #define HOURS 10.0 /* hours of logging */ #define INTERVAL 5.0 /* minutes between samples */ #define SAMPLES ( (60/INTERVAL)*HOURS + 1 ) float battery_voltage[ SAMPLES ]; the message on download is (...) (26 years ago, 8-Dec-98, to lugnet.robotics.handyboard)
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memory
(score: 0.989)
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| | Re: Batteries?
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| (...) Most everything that I've read on this subject argues that NiCad memory is mainly a myth. NiCads do get damaged by overcharging or deep discharging, but except in very controlled situations they don't have a "memory". I recommend reading (URL) (...) (26 years ago, 2-Dec-98, to lugnet.robotics)
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memory
(score: 0.989)
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| | Real-time communication or just download programs?
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| Hi, I am thinking about buying the Mindstorms kit, but I was wondering if you can just download programs to execute in the brick, or if you can control it at runtime from the computer? I am interested in using it with things like genetic algorithms, (...) (26 years ago, 15-Nov-98, to lugnet.robotics)
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memory
(score: 0.989)
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| | Replacement firmware: legOS-0.1
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| Greetings. Work on my native mode kernel and standard library has progressed to a point where it is time to baptise the offspring. legOS V0.1 beta is now available for download on (URL) allows you to program the LEGO Mindstorms RCX in assembler and (...) (26 years ago, 16-Nov-98, to lugnet.robotics)
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memory
(score: 0.989)
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| | Memory
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| Has anyone thought about increasing the memory capacity of an RCX (or is there simply not enough room inside the box)? -- "It is better to ask a 'stupid question' than to make a stupid mistake." (26 years ago, 7-Feb-99, to lugnet.robotics)
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memory
(score: 0.989)
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| | Re: legOS ... really a stack question
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| (...) Looking at my memory map, it appears that there is space for the stack in on-chip memory between fdc0 and ff7e (or thereabouts). That's just about 450 bytes. If you need more stack space than that, you'll need to move the stack to off-chip (...) (26 years ago, 2-Jan-99, to lugnet.robotics)
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memory
(score: 0.989)
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| | Re: I overcharged my handyboard.
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| Madhu: I would be very surprised that you overcharged the batteries to the point of no function. Your batteries would have to have gotten very hot for that time (batteries deteriorate in a charger due to evaporation of electrolite water). Generaly (...) (26 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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memory
(score: 0.989)
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| | Re: How many bricks from San Francisco to New York?
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| (...) Ooh -- that'd be even cooler! And then how much time would it take for a monorail car to get from one coast to the other? I don't know how fast the cars go but the straight track segments are 32 studs long, so...hmm...that works out to (...) (26 years ago, 18-Nov-98, to lugnet.general)
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memory
(score: 0.989)
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| | Re: [LDAO] Editor Feedback requested
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| (...) Right. Or keep just a few more off-screen images, for interactive performance. If there was a set of maps (color, z-buffer and part) for each element, these could be quickly combined into the display images. (...) Probably. There's not a large (...) (26 years ago, 20-Nov-98, to lugnet.cad)
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memory
(score: 0.989)
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| | Re: RCX 2.0 -- ideas. Keeping memory alive.
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| I was wondering if it would be possible to hook a 1 farad capacitor to one of the input ports to keep memory alive while changing batteries. You wouldn't need 9 volts, since the input ports are connected to the system bus at 5v. It could be attached (...) (26 years ago, 5-Jan-99, to lugnet.robotics)
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memory
(score: 0.989)
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| | MAP Bot
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| I have a idea which is based on a project I worked on back in the 70's. It used one of the sonar devices that Poliord used to foucse their camera with. This device is availible without the camera. It sends a signal based on how far the object is. (...) (26 years ago, 21-Nov-98, to lugnet.robotics)
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memory
(score: 0.988)
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| | Re: Using 30VDC to drive motors
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| Dave As far as connecting the grounds, that just means that the HB and the motors must share a common ground. The H-bridges need to reference the direction and PWM signal to ground and if that ground reference is not the same as the HB's the motors (...) (26 years ago, 21-Nov-98, to lugnet.robotics.handyboard)
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memory
(score: 0.988)
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| | Re: legOS
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| Has anyone be able to unpack the LegOS file. I have the CYGNUS GCC on my Wintel system. Using GZIP I get this error "Invaled Compressed Data - Format Violation" I would like to try out LegOS and see if it will allow memory storage/retrieval. I have (...) (26 years ago, 24-Nov-98, to lugnet.robotics)
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memory
(score: 0.988)
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| | Re: legOS
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| (...) I'm not going to touch the legal issues being talked about, but let me try to address the technical ones. A micro-processor (CPU) is composed of a bunch of registers, adders, buffers, memory I/O locations, etc. In order for anything to take (...) (26 years ago, 1-Dec-98, to lugnet.robotics)
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memory
(score: 0.988)
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| | Re: Worm Drive Question
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| If you really want one, you can commit the heresy of running a standard axel through a thread cutter and use some little nylon nuts (available at electronics supply houses). At least one other person has done this and posted results to the web (I (...) (26 years ago, 25-Nov-98, to lugnet.robotics)
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memory
(score: 0.988)
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