Subject:
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Re: mindstorms NXT and memory
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 10 Jan 2006 14:00:32 GMT
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Viewed:
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1421 times
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In lugnet.robotics, "Davis, Brian L." <brdavis@iusb.edu> wrote:
-snip-
> Now *that's* an interesting concept! I've not played with GPS units lately -
> does anyone on this ist have a Bluetoothed GPS unit? How do they interface? How
> small are the GPS units?
Brian,
I have a bluetooth-enabled GPS unit that I can "borrow" from work if you'd like
to see one the next time I see you. It cost us about $140 and is about 6 studs
wide by 8 studs long and about 2 bricks tall. With the bluetooth adapter it is
about another brick taller. Accuracy varies but you can count on 4 to 5 feet
almost all the time. Very nice. Not knowing much about bluetooth (I guess I'm
going to have to learn) I can't tell you much about that side of the
communication, but almost all GPS units send standard NMEA data strings. They
are simple comma-separated data strings reporting latitude, longitude, UTC time,
speed, heading, along with several other bits of information. Depending on the
GPS unit they will be sent anywhere from 10 times a second to 1 per second.
This is the specific unit I'm playing with right now.
http://www.haicom.com.tw/hi_305III.shtml
They are very compact and lightweight. It even has a built-in SD card reader,
but I think that is only available when the unit is used in compact flash mode.
When I heard bluetooth in the NXT this is absolutely the very first thing I
thought of.
John
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Message has 1 Reply:
 | | Re: mindstorms NXT and memory
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| (...) I have done some GPS app development using a Bluetooth GPS (Pharos) and a PDA. As mentioned earlier, you can simply parse the Lat/Long or Northing/Easting/Zone from a standard NMEA string to determine location. So, it could be possible to use (...) (18 years ago, 10-Jan-06, to lugnet.robotics)
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Message is in Reply To:
| | RE: mindstorms NXT and memory
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| (...) Now *that's* an interesting concept! I've not played with GPS units lately - does anyone on this ist have a Bluetoothed GPS unit? How do they interface? How small are the GPS units? (...) I've always wanted to make a yard-rover that could (...) (18 years ago, 10-Jan-06, to lugnet.robotics)
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