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Garmin Edge 305, anyone use it?
I noticed that one of the Paris-Roubaix riders used a Garmin Edge 305
GPS/cyclocomputer yesterday (see http://tinyurl.com/2hyjfm). Has anyone tried these? How do they calculate altitude data? Using GPS, or using some sort of barometric sensor to measure changes in air pressure? And which would be the more accurate of the two? Also, does the Edge 305 record your route and let you download it afterwards and plot it with Google Earth? J. Spaceman |
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Garmin Edge 305, anyone use it?
Per Jason Spaceman:
Also, does the Edge 305 record your route and let you download it afterwards and plot it with Google Earth? I've got the 301 and it definitely does that. GoogleEarth|Tools|GPS, but you have tb a subscriber to "GoogleEarth Plus". The freebie version doesn't support it. -- PeteCresswell |
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Garmin Edge 305, anyone use it?
Jason Spaceman wrote:
Also, does the Edge 305 record your route and let you download it afterwards and plot it with Google Earth? J. Spaceman yes, it definetly does -- here's the link to a site that plots your routes on Google Maps. http://www.motionbased.com/ fwiw, if I were to buy a new GPS set-up I'd probably look into the wearable Garmin Forerunner 305 -- then you can use it not just on one or two bikes-- but you'll also be able to use it for running or any type of activity away from the bike. |
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Garmin Edge 305, anyone use it?
On Apr 16, 12:42 pm, Jason Spaceman
wrote: I noticed that one of the Paris-Roubaix riders used a Garmin Edge 305 GPS/cyclocomputer yesterday (seehttp://tinyurl.com/2hyjfm). Has anyone tried these? How do they calculate altitude data? Using GPS, or using some sort of barometric sensor to measure changes in air pressure? And which would be the more accurate of the two? Also, does the Edge 305 record your route and let you download it afterwards and plot it with Google Earth? J. Spaceman A freind of mine has one. It uses both to determine altitude, but he complains it does not have a manual calibration feature. Like he knows how high his house is, but it always tries to do it itself, and since his rides start out with some immediate up and downs, and weather shifts, it takes a while to for the altitude measurement to settle down and sometimes is off a bit. Joseph |
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Garmin Edge 305, anyone use it?
On Apr 16, 6:11 pm, Lou Holtman wrote:
wrote: On Apr 16, 12:42 pm, Jason Spaceman wrote: I noticed that one of the Paris-Roubaix riders used a Garmin Edge 305 GPS/cyclocomputer yesterday (seehttp://tinyurl.com/2hyjfm). Has anyone tried these? How do they calculate altitude data? Using GPS, or using some sort of barometric sensor to measure changes in air pressure? And which would be the more accurate of the two? Also, does the Edge 305 record your route and let you download it afterwards and plot it with Google Earth? J. Spaceman A freind of mine has one. It uses both to determine altitude, but he complains it does not have a manual calibration feature. Like he knows how high his house is, but it always tries to do it itself, and since his rides start out with some immediate up and downs, and weather shifts, it takes a while to for the altitude measurement to settle down and sometimes is off a bit. Joseph Yes that's very annoying. You have to wait for about 1 minute before it displays the correct altitude. Lou As I understand it, because of the peculiarities of where he lives, it takes much longer than 1 minute. If it wasn't so "user-friendly" and had some advanced settings options he could set it as he wishes. Joseph |
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Garmin Edge 305, anyone use it?
Lou Holtman writes:
wrote: On Apr 16, 12:42 pm, Jason Spaceman wrote: I noticed that one of the Paris-Roubaix riders used a Garmin Edge 305 GPS/cyclocomputer yesterday (seehttp://tinyurl.com/2hyjfm). Has anyone tried these? How do they calculate altitude data? Using GPS, or using some sort of barometric sensor to measure changes in air pressure? And which would be the more accurate of the two? Also, does the Edge 305 record your route and let you download it afterwards and plot it with Google Earth? J. Spaceman A freind of mine has one. It uses both to determine altitude, but he complains it does not have a manual calibration feature. Like he knows how high his house is, but it always tries to do it itself, and since his rides start out with some immediate up and downs, and weather shifts, it takes a while to for the altitude measurement to settle down and sometimes is off a bit. Joseph Yes that's very annoying. You have to wait for about 1 minute before it displays the correct altitude. Depends on how you define "correct". I've recorded the elevation for an hour with the unit lying in my backyard. The result was, more or less, a periodic sawtooth. The amplitude was around 10-20 meters, which, I suspect, accounts for its optimism on accumulated climbing. I assume this is due to the motion of the GPS satellites. -- Joe Riel |
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Garmin Edge 305, anyone use it?
On 2007-04-16, wrote:
As I understand it, because of the peculiarities of where he lives, it takes much longer than 1 minute. If it wasn't so "user-friendly" and had some advanced settings options he could set it as he wishes. FWIW, I have similar issues with my eTrex unit, and I live in rolling prairie country, for the most part. It simply takes longer to lock onto enough satellites to get a good 3D fix, and if you have to deal with trees, canyons, skyscrapers, or heavy overcast, that just adds to the time to lock in. I can get a 2D fix by the time I hit the end of the driveway, but my topo profiles are always wacky for a good block or so before they settle in, unless I wait out in the open for a minute or two before I leave. -- __o Kristian Zoerhoff _'\(,_ (_)/ (_) |
#9
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Garmin Edge 305, anyone use it?
On Mon, 16 Apr 2007 09:34:15 -0700, Joe Riel wrote:
Depends on how you define "correct". I've recorded the elevation for an hour with the unit lying in my backyard. The result was, more or less, a periodic sawtooth. The amplitude was around 10-20 meters, which, I suspect, accounts for its optimism on accumulated climbing. I assume this is due to the motion of the GPS satellites. What was the period of the oscillation? Kinky Cowboy* *Batteries not included May contain traces of nuts Your milage may vary |
#10
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Garmin Edge 305, anyone use it?
Kinky Cowboy writes:
On Mon, 16 Apr 2007 09:34:15 -0700, Joe Riel wrote: Depends on how you define "correct". I've recorded the elevation for an hour with the unit lying in my backyard. The result was, more or less, a periodic sawtooth. The amplitude was around 10-20 meters, which, I suspect, accounts for its optimism on accumulated climbing. I assume this is due to the motion of the GPS satellites. What was the period of the oscillation? I looked again at the data. I really need to take more data to get a better handle on this, the actual data is not really periodic (my memory was wrong). The elevation started at 145 meters, increased linearly to 163 meters in 20 minutes, then dropped quickly to about 148 m and stayed there for 10 minutes, then increased linearly to 168 m in 10 minutes, then dropped linearly to 148 m in about 5 minutes. There are also a few spikes. I have the 302, my wife has the 305, which includes a barometic pressure sensor; I have a plan to compare the two, but haven't got around to it. -- Joe Riel |
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