 | | 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 (26 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. (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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: (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 years ago, 8-May-00, to lugnet.robotics.handyboard)
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