[OSM-talk] Navi GPS SD card woe, any advice?

[Joerg Ostertag (OSM Munich/Germany)]

On Monday 18 September 2006 23:21, Adam Bower wrote:
> Hi,
>
> I know a fair few of the OSM'ers are Navi GPS users, and I got mine on
> the basis of the review on the wiki. I've been using my Navi GPS for
> just over a week now and I'm having loads of problems using SD cards
> for logging and wondered if anyone has any advice?
>
> Only 2 of the 4 SD cards that I own are recognised by the device, of
> these about 50% of the time when using either of them the GPS writes
> garbage data to the SD card although the other 50% of the time it works
> perfectly, unfortunately you don't find out about this until after
> getting your track logs and trying to pull them off the SD card.
>
> Now, is there any way that anyone knows of that I can tell if I have a
> faulty unit? or is this the only 2.7V supplied to the SD card slot bug?

I don't really know. But what i found 'as a rule of thumb' that the smaller 
the card the better it works. This is the reason I just ordered 'only 512MB 
Cards for the 10 "German-rental-NaviGPS".
 What I also found is the Toshiba 1GB Cards worked good here. So that is my 
other choice. I had to test about 10 different new cards to get 3 working 
brands+Size. It also doesn't seem to be a matter of Brand only.

The only thing i recognize: If you switch off the NaviGPS and then switch it 
on (with the card inserted) and it tells you "CARD FOUND" "NEW FILE" the 
chance of a working card are good. If you get any error there it will not 
really be reliable.

Hope this helps

-

Joerg