In this Instructable, I'll lay out a simple process I've come up with for making custom maps for Garmin outdoor GPS units and share the entirely free tools I use to do it. So many tools and suggestions, in fact, that it's a bit overwhelming. Of course, they won't tell you some clever tricks to get around them! While it's not possible to completely circumvent Garmin's limitations, there are a wealth of tools online - some free, and some not - that can help you make better custom maps. Garmin has purposefully included limitations on the size and number of custom maps you can upload to your device to encourage you to purchase their premium maps. Garmin provides instructions for doing this here, but there's a catch. Even if your unit came with TOPO maps, you can improve the functionality of your GPS by creating and uploading custom maps of areas you explore often.
You have to be zoomed in pretty far for the map to be displayed on the screen.If you have a Garmin GPS designed for hiking and other outdoor activities (including the GPSMAP, eTrex, Colorado, Dakota, Oregon, and Montana series, among a few others), you don't have to settle for the bare-bones maps that came pre-loaded on it. It has to be in the folder Garmin\Custom Maps on the Montana for the unit to find and use it. Once you have created the kmz file you can import it into Basecamp and you can use either Basecamp or direct file transfer to put it on the Montana You can also check for yourself in Acrobat using Tools\Measure\Geospatial Location Tool and see if Acrobat displays lat/long info as you scroll around the map. If the map you want to convert does not have geospatial info, the program will tell you. Somewhere on the site are specific instructions on converting geospatial pdfs to Garmin kmz files. Here is a link of how to get it and use it I use the software Mapc2pc to do the conversion.
Many of us do it all the time.Īnd the kmz files can be used in Basecamp as map overlays to whatever map you are looking at.
Click to expand.+1 Many forest service maps, especially MVUMs do have geospatial information and they can be converted to kmz files and stored on the Montana as custom maps.
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