[maemo-users] Wayfinder Navigator vs Garmin

From: Andrew Daviel advax at triumf.ca
Date: Wed Jun 25 01:07:08 EEST 2008
On Tue, 24 Jun 2008, Mark wrote:

> The built-in "Map" app *is* the Wayfinder app, you just have to pay
> and get a code to activate the routing feature.

dpkg identifies it as "map - Map Application for Nokia Internet Tablet 
OS". But yes, that's the one.

> My *really* old Garmin GPS III doesn't do routing, and has only a very
> sketchy "basemap" with no possibility of loading street-level maps,
> but even that easily loads points-of-interest as waypoints as well as
> routes (based on waypoints, not streets). Many different apps support
> uploading and downloading waypoints and routes to Garmin units.

I found one that works on Linux - gd2, which I rewrote as gd276 to 
support my gpsmap76 (slightly different data format). Not GPX, though.
I have a script to take a Google Map URL and upload a waypoint, and 
another to geotag my photos.

> Correct. It supports "Garmin format" maps, but not actual Garmin maps
> because they are encrypted. It also supports OpenStreetMaps.

BlueChart is encrypted. Some of the other "actual Garmin maps" like
enhanced basemap, roads and recreation and topo are not encrypted. Or 
they didn't used to be. You used to be able to download the basemap off 
Garmin's site in case you deleted it by accident, or reflashed the unit 
and lost it.

> Presumably the N810s
> can work with bluetooth GPSRs just as well. It would be cool if
> somebody could work out a way to use a bluetooth and the internal
> receivers simultaneously to increase accuracy.

Yes, the N810 works with external b/t GPS. It's just ** annoying that we 
paid extra $$ for a built-in GPS and Nokia customer support tell me that 
I should buy one of their external units if I want good TTFF. I hear a 
rumour that there is a software enhancement in the next release to speed 
things up, maybe by downloading an ephemeris over the net.

Having 2 receivers will not improve accuracy by itself. My Garmin has 
WAAS (North America only apparently; I hadn't realized - maybe EGNOS in 
Europe). The N810 probably doesn't. Using a b/t receiver with WAAS/EGNOS 
or DGPS capability (needs external radio receiver) would give better 
accuracy, though I hadn't noticed my N810 being wildly off.


Andrew Daviel, TRIUMF, Canada

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