Garmin etrex – Supporting Raster Maps

garmingpsraster

I currently use an excellent set of printed topographic route maps for mountain biking. I would like to scan the maps, georeference them, and upload the maps to a handheld GPS device.

Does the etrex series (10, 20, 30) support raster maps? Can I georeference the JPEG image using open source software?

Best Answer

For etrex 20 & 30 (but not the 10)

see the compare guide: https://buy.garmin.com/shop/compare.do?cID=145&compareProduct=87774&compareProduct=87771&compareProduct=87768 (see custom maps compatible)

Garmin have free instructions on how to use Google Earth and your custom images (scanned topographic route maps) in this case and loading it to the gps device.

Add the Image as Google Image Overlay

Reference the Image

Save as Places

Send Your Custom Map to Your Device

Connect your Garmin outdoor handheld device to your computer with a USB cable. In Google Earth on the left side of the screen, right click on your custom map. Click Save Place As.

In the dialog box that appears, find the drive for your connected handheld device and save³ your custom map in the /Garmin/CustomMaps/ directory (you may need to create a new "CustomMaps" directory if this directory does not exist). Save the file in KMZ format.

full instructions http://www.garmin.com/us/products/onthetrail/custommaps#fragment-2

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