Questions to Jon Wiliams
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Dear Jon Wiliams.
I just wonder what calculations you are planning on the November
column using GPS.
Do you calculate bearing/direction (0-365) as well as range to next
point of turn.
Will you use a PAK II for Tan calculation, or some other way to find
the direction/range?
And will this "point of turn" then have an area (20-100m) pre-
massage/status or something, to prevent bypass.
Idea:
What about implementing warning about automatic traffic control
points as well? Some countries have a photo box that takes a picture
of cars driving to fast. Could be interesting to get a warning from
the Basic stamp about that, assume the position is on RAM.
Stein.
I just wonder what calculations you are planning on the November
column using GPS.
Do you calculate bearing/direction (0-365) as well as range to next
point of turn.
Will you use a PAK II for Tan calculation, or some other way to find
the direction/range?
And will this "point of turn" then have an area (20-100m) pre-
massage/status or something, to prevent bypass.
Idea:
What about implementing warning about automatic traffic control
points as well? Some countries have a photo box that takes a picture
of cars driving to fast. Could be interesting to get a warning from
the Basic stamp about that, assume the position is on RAM.
Stein.
Comments
that the Stamp uses brads (0 - 255) and this is adjusted to degrees (0 - 359)
and direction (i.e., N, NNE, NE, ENE, etc.). That said, the resolution is not 1
degree (1 brad is 1.4 degrees). And no, I don't use the PAK processor -- it's
all done in a stock BS2p. My code is not as fancy as you have assumed. I used
a web site to get directions and distances to my brothers house. The display
would read my speed, heading, and current leg. When I was close to my leg
distance I would start looking for signs. Of course, I could have plugged this
information into my program, but I was pressed for time. So, what my project
is, essentially, is secondary speedometer and trip odometer, with dead accurate
time [noparse][[/noparse]I'm a time-of-day freak], and direction of travel.
Some may wonder the point? It's really about another way of getting data from
the Garmin GPS and using it where one may. I have a friend who's son races
boats and he's considering the project to track top speed and other parameters
that they'll use to tune for engine performance. By using GPS, we can find the
speed of anything big enough to carry it. At Parallax, we have a couple of
model airplanes equipped with GPS units and BS2p's acting as dataloggers.
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
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