Adventura 2 Plus, adding mosaic maps to microSD card
Dear TwoNav Community,
I recently bought the Adventura 2 Pro and am trying to get used to how it works.
I live in the UK and will likely use it mostly here so I also bought the full set of OS 1:25000 maps which I've used for walking in the UK before.
Looking at uploading the mosaic components I've managed to upload maps mosaic components to the GPS internal memory and I've managed to physically upload the map mosaic components to the SD card both directly via windows and using land (I bought a subscription) but I haven't been able to get the GPS to read the files on the SD card.
I've tried uploading the map directory into the SD card and mosaic componentes into that folder. Also tried replicating the directory structure on the internal memory but it still didn't recognise it.
Realistically I could just only load the moasic files for the area that I'm using the GPS in to the internal memory each time I use the device but it would be nice to be able to access those on the SD card. I can't work out what I'm doing wrong so any advice is greatly appreciated.
(Or if this infomration is somewhere on the twonav website a link would be great).
Thank you!
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Similar issue with Aventura 2. I have installed a microSD card on it. As recommended in the manual I have moved the maps from the TwoNavData/Maps folder from the internal memory to the root of the microSD, including COUNTRY_RTMAP folders. I see on the display the overview map but the topographic maps in the RTMAP folder are not shown. Then I moved the maps in the RTMAP folder also to the root of the microSD, however, still no topographic map shown on the display of Aventura 2. I do see on the display TomTom and OpenStreetMap maps that are in the root of the microSD. Where should the maps in the RTMAP be located on the microSD card to get them on the display of Aventura 2? Any help very welcome.
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Solved. I tried a few options more. For the specific country I have in the COUNTRY_RTMAP folder subfolders with regions in which the mosaic files are. Not a problem on internal memory. When moving them from the subfolder to the COUNTRY_RTMAP folder on the microSD it worked. So, overview map in the root on the microSD card and the 1:25,000 mosaic files in the COUNTRY_RTMAP folder. Hope this is of help for @Thomas and maybe others dealing with this challenge.
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Hello,
If you place map tiles in a folder with the _RTMAP extension, the name of these tiles will be hidden, this is the goal. In principle in the /path that contains CONTRY_RTMAP (Containing map tiles) you have a file MyContry.imp which is a script for calling the tiles contained in CONTRY_RTMAP, the GPS knows thanks to this script "MyContry" which is the right tile to open. And it avoids saturating the GPS screen with the name of a multitude of tiles. On the trip we do not need to know which tile is open we simply open a map named MyContry.
Best regards
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Many thanks Thierry,
The issue was that the mosaic files for a country are in zone subfolders in /COUNTRY_RTMAP on the internal memory (and LAND on my laptop). When I moved the mosaic files from the zone subfolders to /COUNTRY_RTMAP on the microSD card the maps became visible on the screen of Aventura. When this structure /COUNTRY_RTMAP/ZONE_subfolders/mosaic_files.rtmap is on the internal memory this was not an issue. I could not find this instruction for /COUNTRY_RTMAP on microSD in the manual. The only advice is to put maps in the root of the microSD: TwoNav will only look for maps on the microSD card (no tracks, waypoints or other types of files). It is recommended to install the maps at the root of the card instead of creating subfolders. COUNTRY_RTMAP is a subfolder. Maybe something to elute on in a new version of the manual.
What does this remark exactly mean: NOTE: GPS autonomy may significantly decrease if you use a microSD card. Better not to use microSD when hiking in the mountains? How much battery capacity does using a microSD card cost? Autonomy decreases from 36 hours to 20 hours instead?
By the way, I am a happy user of two generations Aventura.
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Next about this topics,
The folder containing the tiles (Contry_RTMAP) and the script "MyMapContry.imp" must always be in the same folder or under the parent folder /map ([/map/Contry_RTMAP]; [/map, MyMapContry.imp]) otherwise it does not work.
On the consumption aspect, it is like in your house, the more peripherals or devices on the network, the more power there will be to provide, therefore less autonomy. The ratio of power consumed (therefore the impact on autonomy) is to be put in relation to the energy consumption made by the screen which will always be the most important consumption item. Then if you hunt the minutes of autonomy, the more work the processor will have to do, the more power it will consume, and the more maps there are whether they are used or not, the processor will have work.
I recently did the experiment, the goal was not the impact on autonomy but on the workload (reaction time), I used two maps covering the same geographical area, one of the RASTER type (Rmap/Mbtile) which was very large (Due to the level of detail in ZOOM and pixel) and a vector map which is not very large (Object database to draw). The observation is clear, the reactivity is reduced when the Raster map is displayed (Especially the update aspect of the map, no blur but the micro tiles at high Zoom take time to come), the reactivity is excellent with a VECTOR vector map. The GPS on the circuit took several minutes to close the RASTER map, erase the small tiles (which was happening to display them) no delay on navigation it is the display of the map which requires more work therefore time. The consumption on this outing was in the highest range, which I note at each outing (+3%).
Then the question arises of the interest of having an SD card, which in principle is used to store one or more large maps in memory size (RASTER). Having the RASTER map of your country in Land the interest is obvious for the preparation and prospecting phases. But nowadays the ON LINE version of these maps meets the need, these ON LINE maps take up almost no space in memory and are constantly at the version of the latest update. In some European countries this type of map is even free (See the website of your national geographical institute).
In the GPS you need an OFF LINE map to compensate for 4/5 G network losses but in a GPS a map that only covers the geographical area of the activity is sufficient. There is no point in storing the map of the country, or of a region, you will never travel all the paths, you have to keep it up to date which represents a cost.
In addition, depending on the activity, the speed of movement may be low, therefore the distance covered in a day is reduced and the useful map area will be reduced to a few km². A RASTER map (memory-intensive) is of definite interest for certain activities (Hiking, Mountaineering, Kayaking, etc.) for others a vector map is preferable as soon as the speed of movement increases (this type of map takes up less space in memory). These are compromises to be found and optimized according to your activity(ies).
The need to have the entire 1/25,000 RASTER map of your country in the memory of your GPS was valid at the beginning of the 2000s. Current technologies and open source solutions now available mean that there is no longer any reason to use an SD card in a GPS, in addition the internal memory of GPS devices has increased tenfold over a decade, which further reduces the justification for an SD card.
Best used of your Aventura
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