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I see. Humm. May be I can really use this. OK, if I put a few IR LED with ID at different locations in the room, and put them at the same height as the robot sensor so I don't need to worry about tilt angle. If I put the sensor fixed on the robot, (...) (24 years ago, 12-May-00, to lugnet.robotics.handyboard)
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| | Re: Household Positioning System Re: DGPS
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Actually, I am going in that direction. I was trying to use the ultrasonic transducer to produce a signal and then use two detector to triangulate the location. That wasn't much of a success. I will need to redo the parts. I want to try using more (...) (24 years ago, 12-May-00, to lugnet.robotics.handyboard)
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| | Re: Household Positioning System Re: DGPS
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(...) Some years ago i wrote the presentation part of a prototype system based on ultrasonic beacons. the beacons were plugged into wall outlets and transmitted their ID:s, i can't remember the details but the beacons were syncronized by (...) (24 years ago, 11-May-00, to lugnet.robotics.handyboard)
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| | Re: Household Positioning System Re: DGPS
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(...) No design, just an idea. The way I see it, you put a "Head" on the top of your robot. It has three sensors mounted for tilt and pan. The easiest way I can see it is to use gear head stepper motors with a "Home" switch to point the thing. The (...) (24 years ago, 11-May-00, to lugnet.robotics.handyboard)
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unsubscribe (24 years ago, 11-May-00, to lugnet.robotics.handyboard)
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| | AS11_IC assembler
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Dear All I'm trying to use the AS11_IC assembler which comes in the pcode_pc zip file. I'm getting 'file not found' and 'can't open' messages left, right and center. All the necessary files seem to be in the right directories, except for ascpp1.asm (...) (24 years ago, 11-May-00, to lugnet.robotics.handyboard)
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| | Re: expansion board problems
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Claudia Bernett wrote: <snip> (...) <snip> I wonder if the mats aren't perhaps generating electrostatic discharge (ESD), which can wreak havoc with many solid state devices. -- Will (24 years ago, 11-May-00, to lugnet.robotics.handyboard)
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| | Re: expansion board problems
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Claudia, Without a lot more detail, it will be difficult to solve this one over the internet. If you can take a few minutes and regroup, maybe someone will have an idea. The kinds of things it would be good to know, interspersed with my comments: 1. (...) (24 years ago, 10-May-00, to lugnet.robotics.handyboard)
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| | Re: expansion board problems
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a follow-up to my own message - it seems that this problems occur WHILE i am actually running the application and using the project. if anyone can help at all - i would be very grateful, i am at a loss and urgent to get this working. i have built (...) (24 years ago, 10-May-00, to lugnet.robotics.handyboard)
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| | Re: Household Positioning System Re: DGPS
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Cool idea. Do you have it working? Or do you have a schematic that is somewhat working? If so, I want to test out how accurate it will be. It will be fun to use the LED as landmarks in the building. -- Ray <handyboard@media.mit.edu> wrote in message (...) (24 years ago, 10-May-00, to lugnet.robotics.handyboard)
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| | guipossebon@zipmail.com
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Hello people: I´m a student from PUCRS(Brazil) and I have to finish my conclusion Work in my course(Mecatronical Engineering) and I need to Know how I modify the frequency in MC68HC11 set in 500Hz to 5KHz because the drivers need work to control a (...) (24 years ago, 10-May-00, to lugnet.robotics.handyboard)
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| | Sonar (yes, it's me again, with more sonar questions!)
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Today several members of my lab and I decided to solder together the sonar assembly which had been previously been held together by large quantities of duct tape. We decided the 9-pin connection strip would be too flimsy and unnecesarily difficult (...) (24 years ago, 9-May-00, to lugnet.robotics.handyboard)
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| | RE: Household Positioning System Re: DGPS
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Can we use RF for the communication? The concept is much like the actual GPS systems, triangulate the position with 3 or more signals looking forward for a system like this Kalyan (not an Electronics engineer) -----Original Message----- From: (...) (24 years ago, 9-May-00, to lugnet.robotics.handyboard)
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| | Household Positioning System Re: DGPS
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(...) How about a beacon system. Each room can have 3 or so beacons high on the wall. Each beacon flashes at 38Khz and each beacon modulates this 38KHz with its own personal code. The top layer of your robot would have 3 or 4 directional sensors (...) (24 years ago, 9-May-00, to lugnet.robotics.handyboard)
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| | expansion board problems
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hello. i seem to be having an expansion-board problem which is very puzzling. i am using all sixteen ports, and am in the process of putting together a project which requires that it be stored with all sixteen ports occupied for a week or two at a (...) (24 years ago, 9-May-00, to lugnet.robotics.handyboard)
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| | DGPS
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(...) If you use differential GPS (which includes a nearby stationary receiver at a known coordinate) you can get much better resolution -- down to sub-meter accuracy. Still might not be enough to avoid the furniture, though. Forget global. We need (...) (24 years ago, 8-May-00, to lugnet.robotics.handyboard)
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| | Re: Clinton Acts to Make GPS Systems More Accurate
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(...) you're making an outside 'bot? Note: I've heard everything from 6 meters to 17 meters, and I'm not sure of the exact figure yet. I was too busy last week to study the GPS change. Curt Mills, WE7U hacker.NO_*SPAM@tc.fluke.com Senior Methods (...) (24 years ago, 8-May-00, to lugnet.robotics.handyboard)
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| | charger
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Hi, Forgot to tell that the board did download the p-code and seems to work ok with the new battery installed. Also when I plug the charger adapter directly into the handyboard the yellow led flickers between bright and dim for about one minute then (...) (24 years ago, 7-May-00, to lugnet.robotics.handyboard)
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| | battery charger board
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Hi Folks, Had a bad experience with my handyboard thos past week, I left it on charge accidently for two days-could possibly even been in the zap mode I'm not sure. What did happen was the battery was dead ,r-11 was hot and turned black and the (...) (24 years ago, 7-May-00, to lugnet.robotics.handyboard)
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| | Re: sharp GP2D02
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Hi, (...) (24 years ago, 4-May-00, to lugnet.robotics.handyboard)
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