Question about Garmin Edge 305HR GPS Receiver

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Lost History I waited a long time before transferring data from my Garmin Edge 305 to my PC. When I did, any rides older than a week had no map data or other data (other than averages) associated with them. Any idea what is causing this? I have not updated anything since I purchased the unit in September of 2007.

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  • 81 Answers

May not be linked to date of ride. Device has a limited memory, so you have to erase history when long rides, or frequent rides.
When memory is full, device is managing by erasing older data waypoints.

You may also activate intelligent recording of waypoints, that calculates waypoints record when direction or speed changes. This optimizes memory usage.

Posted on Sep 10, 2010

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Edge 305 giving inconsistent and inaccurate elevation readings. everything else is cool. any thoughts?


Same for me very often.
I think this is due to starting a road without waiting long enough that sattelites are acquired.

In fact 3 sattellites allow to compute position, 4 are necessary to compute position plus altitude.

Accuracy of position and altitude is much better from 5 sattellites acquired.

So I advise to start your device OUTDOORS, in an open place (not near walls as it masks sattellites) and wait until screen automatically moves to run mode, meaning enough sattellites are acquired.
You will get better chances to have a good accuracy.

Also on Garmin connect site, when you load your ride, you can correct altitudes automatically using real maps.

Dec 31, 2010 | Garmin Edge 305 GPS Receiver

1 Answer

My garmin edge 305 will not upload my rides, the training center software stalls at 2% the declares an error.


I have similar problems that have only just started.
Together with Training Centre crashes after uploads forcing rollbacks by deleting a history tree file and using a backup...
Tres frustrating...

Am thinking seriously of ditching it...

Nov 29, 2010 | Garmin Edge 305 GPS Receiver

1 Answer

My edge 305 turns off intermittantly during rides and is not mapping the routes I ride completely


This is internal problem due to contacts that are getting dirty or spaced because of too much pressure on the USB port.

Better way is to unmount the device and solder wires in place of gold contacts.

Unmounting device is not easy, see following link

http://blog.mtbguru.com/2008/11/06/surgery-on-the-garmin-edge-305/

Jun 10, 2010 | Garmin Edge 305 GPS Receiver

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I have a new Forerunner 305 and it transfered my first workout to the computer but will no longer do so. The device says "Transfer Complete" however the computer states "There was a problem communicating...


I've just experienced a similar issue for the first time since owning my Garmin 305 Forerunner. Slight difference in my circumstance is that the device itself doesn't show the activity in its history, despite having displayed apparently accurate readings during the activity iteself. Bizarre isuee, and although it's my first issue with this otherwise great device, it does destroy your faith in the unit.

Nov 08, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

Uploading info from the Edge 305


Apperently my unit had some old data prior to my purchase, (amzon selling returned equipment I imagine)

Anyway, I did a hard reset, (turn the power on while holding the mode button down) Erases all history. I then paired up my accessories again, tested it in 1 second mode and smart recording mode. The hard reset seemed to work for me. My 305 edge is now downloading map and graph data to my PC. Hope this helps anyone with the same problem.

May 08, 2009 | Garmin Edge 305HR GPS Receiver

1 Answer

Garmin 305 is off and wont come back on.


You have to soft reset it first, and if not solving, then try hard reset.

Soft reset : hold lap/reset with mode key for some seconds
Hard reset : hols start and mode, then pulse on lap/reset.

after soft reset hold on/off for up to ten seconds before it starts.
after hard reset all data are lost

Mar 15, 2009 | Garmin Edge 305 GPS Receiver

1 Answer

Date not changing


After my ride I needed to stop the timer and reset the device. Then connect to the computer and download the history. It appears that that information I was downloading was from a previous ride.

Jun 26, 2008 | Garmin Edge 305 GPS Receiver

1 Answer

Garmin 305


When the memory in the watch is full detail (ie mapping points) of the earliest runs are deleted but the aggregate data (eg total distance/time etc) is retained. If you want to save the mapping points you need to download it to a PC fairly soon after doing the run (depending of course on how much you use the 305). Although you can use the Training Centre software supplied with the 305 I prefer sporttracks which is a third party donate-ware application which many users find to be much better than TC.

Paul Moore

Mar 11, 2008 | Garmin Forerunner 305 GPS Receiver

1 Answer

Can't upload data to computer


Summary: Memory of device overloaded.

1 Backup your Training center data under File in program.

2 On the device (using mode button) goto History [enter] go to Running or Biking [enter] click down to delete [enter] select "Keep 1 month " [enter] select yes for confirmation [enter]

3 Reinsert device in USB cradle. Select "Receive from device" under File in program.

4 Download your latest information.

Worked for me.

Oct 25, 2007 | Garmin Edge 305 GPS Receiver

1 Answer

Garmin Edge 305 missing gps tracking information


Do you get the graphs for the most recent rides OK, but not the first ones on your trip?

If so, the memory is full. The Edge 305 will hold around 15 - 20 hours of cycling if you use the "smart recording" mode - any more and it starts to overwrite earlier trips (though the summary info in "History" is preserved). The only way around this is to download rides to a PC regularly (not really an option if you are away from a computer!).

Sep 24, 2007 | Garmin Edge 305 GPS Receiver

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