Garmin Dakota 20When I first showed Garmin’s newest outdoor GPS, the Dakota, to my daughter her immediate reaction was, “Awwww, it’s a baby Oregon!”   Her statement accurately captures what this new GPS from Garmin is all about; taking the features of the larger touchscreen Oregon and squeezing almost all of them into an eTrex-sized device.  If you haven’t been following our recent posts on the Dakota I’ll run through a quick recap of the features and then get right into my observations about the new pint-sized GPS.

The Dakota 10 ($299) and Dakota 20 ($349) are Garmin’s first attempt to move the touchscreen technology found in the pricier Oregon down into models that are similar in size and function to the Garmin eTrex HCx family.  The specifications and features common to both Dakota models are:

  • Size: 2.2″ x 3.9″ x 1.3″ (5.5 x 10 x 3.3 cm)
  • Weight: 5.25 oz (148.8 g) with batteries
  • 2.6″ (6.6 cm) diagonal 160 x 240 pixel 65k color TFT touchscreen
  • High sensitivity GPS receiver with HotFix (rapid first position fix)
  • 20 hour battery life
  • Paperless geocaching with support for 2000 geocaches
  • 1000 waypoint / 50 route / 200 track capacity
  • 850MB internal memory for additional maps
  • Preinstalled worldwide basemap
  • USB port for computer transfer and power
  • Turn-by-turn routing capability (with additional maps)
  • Waterproof to IPX7 standards

The Dakota 20 includes the following features over the Dakota 10:

  • Micro SD-card slot
  • 3-axis tilt compensated compass / Sight’N Go
  • Wireless (ANT-based) transfer of tracks, waypoints, routes and geocaches between other Garmin GPS models
  • Barometric altimeter / Elevation Plot
  • Beeps / Alarm Clock

The Dakota 20 ships with the following accessories:

  • Lanyard
  • USB cable
  • Owner’s manual on disk
  • Quick start manual

Here are my observations based on my experience with the Dakota 20 I have which is running Software Version 2.10 and GPS Software 3.40 (sound familiar?).

External Hardware

When you grab the new Dakota for the first time (especially after using the Oregon) it feels small, about the same size as a slightly used bar of soap. The unit is well balanced and rugged, not unlike the Oregon. The width and thickness of the unit is about the same as the Oregon, the Dakota being just 0.1″ (2-3mm) shorter in both dimensions.  The main difference is the length of the Dakota, which is about 0.6″ (1.4cm) shorter than its larger cousin.  Compared to the eTrex HCx the Dakota is about 0.1″ (3mm) thicker and the same width, but the Dakota is 0.3″ (7mm) shorter than the older eTrex. The Dakota is about the same weight as the eTrex, weighing in at 5.25 oz with two AA batteries, a full ounce and a half less than the Dakota’s big brother.

From the front the Dakota looks very similar to the Oregon. The only obvious difference is that instead of the Oregon’s two-hole style lanyard mount at the bottom of the unit the Dakota has a larger, easier to access, rail mount at the bottom.

From the back the Dakota is quite different from the Oregon.  The metallic spine of the Oregon is replaced by a mounting spine that is cast into the plastic battery cover of the Dakota which is compatible with the Oregon and Colorado mounts.  This is great news for those of us who have already invested in Oregon and Colorado accessories.  The latch to remove the battery cover has moved to the top of the device, sliding it down easily removes the cover exposing a familiar watertight battery compartment which Garmin advertises as IPX7 waterproof.  The microSD card slot sits beneath the two AA batteries like the Oregon.Garmin Dakota back

The battery cover has two fingers that wrap up and around the upper corners of the handheld.  I like this design better than the Oregon because there seems to be a more snug fit between the cover and the body when it is closed. The cover is also much easier to install and remove than either the Oregon’s or Colorado’s.

Garmin Dakota USB portThat leaves the USB port which is on the top back of unit between the two fingers in the battery cover.  It is covered by a flexible rubber plug that fits very snugly in the hole into which the USB port has been recessed.  The USB port is a little more difficult to access down inside the recess but it feels like a much more water- and dirt-proof than the Oregon’s USB cover.  Once again my angled Oregon USB adapters worked without any problems in the Dakota.

The power button, the only button on the Dakota, is located on the upper right side of the unit.  It is smaller than the Oregon’s power button and I found it a little more difficult to locate in the dark.

Internal Hardware and GPS Receiver

Under the covers the Dakota seems to share much with the Oregon.  Although the circuit board is covered with a metallic shield making it difficult to confirm the exact GPS chipset the Dakota behaves like the Oregon — it locks the same satellites, has the same WAAS issues, runs the same version of GPS firmware and supports HotFix.  This all leads me to believe that the device used in the Dakota is also the STMicroelectronics Cartesio.Garmin Dakota board

My Dakota 20 has 1GB of  flash memory of which about 950MB was available on the device for GPX files and maps, Garmin advertises the free space to be 850MB.

Like the Oregon 550t the Dakota 20 also has a built in magnetometer (compass) and accelerometer.  Together these two sensors provide the user with a tilt compensated 3-axis compass.  Calibration of compass and its operation is identical to the 3-axis compass on the Oregon 550t.

The USB 1.1 interface on the Dakota means you won’t get the same snappy map and GPX file transfers that the Oregon 550t enjoys because of its faster USB 2.0 interface.

Screen

The 2.6″ (6.6 cm) diagonal screen of the Dakota will be a step up in size for eTrex users.  The 160 x 240 pixel transflective 65K color TFT touchscreen has about the same number of pixels as the eTrex HCx screen but it is about 40% larger in area.  The drop in resolution is very noticeable going between the Oregon and Dakota.  The Dakota screens looks a little pixelated to me after using the higher resolution receivers.  The other thing I noticed after using the Oregon and Colorado is that the screens all felt compressed vertically on the Dakota, probably because of the aspect ratio differences between the screens.

My hands are big enough that I sometimes have problems with double key presses on small touch devices, so I was concerned about the Dakota.   The worst case on the Dakota and Oregon interface is the alpha-numeric input screen which has a 4 x 7 grid of buttons crammed into one page.   What I notice about the Dakota is that the aspect ratio of the buttons is different from the Oregon (images below).  Buttons are almost the same width but the Dakota’s are not as tall as the Oregon’s.  Based on my crude calculations the buttons on the Dakota are about 14%-15% shorter.  I thought that this would make a difference on very dense screens but so far I have not noticed any problems, maybe preserving the width of the keys is enough to make it feel similar.

Garmin Oregon alpha-numeric Garmin Dakota alpha-numeric

There has been a lot of discussion about screen readability since high resolution devices like the Colorado, Oregon and Magellan Triton were introduced several years ago.   The simple fact is that transflective screens become less reflective as the pixel density increases making a higher resolution screen more difficult to read than a lower resolution screen given the same lighting conditions.   Based on this “lower resolution display is more reflective” arguement I was really hoping that the Dakota would be brighter and easier to read outside.

Although the Dakota 20 is more reflective outdoors than either my Oregon 400t or Oregon 550t, it is only marginally better than the 550t.  Furthermore, under low light conditions when you need to use backlight the Dakota is not nearly as bright as either Oregon.   My guess is that there are two issues at play.  The first issue is the plastic material over the Dakota touchscreen which affects visibility under both bright and low/no light.  This material seems to block more light as compared to either Oregon and it makes lighter colors like white and yellow look washed out and gray.  The second issue which only affects low light operation, is that the backlight does not appear to be as strong as the Oregon’s.

The picture below compares the GMAP60CSx, Dakota 20, Oregon 550t and Oregon 400t.  This shot is representative of a low light comparison, the backlight is probably the dominant factor here and the Dakota is obviously darker than the others.  If I can ever get a day with some bright sun around here I’ll post some bright light comparisons!

Garmin GPS screen comparison - low light

3-Axis Compass

I’ve never liked the 2-axis compass on the older Garmin models because of the need to hold the unit flat.   The 3-axis tilt compensated compass on the Dakota allows you to use the compass when you are holding the GPS in just about any orientation making it a much more useful sensor.   Calibration of the 3-axis compass involves one rotation on each of the three axis, which takes about the same amount of time to calibrate as Garmin’s 2-axis compass.  The electronic compass turns on below 1-2mph much like the Oregon 300/400 compass.  Based on my tests with the Oregon 550t, which appears to share the same compass, you need to calibrate at least as frequently as you do with Oregon 300/400, maybe slightly more.

Garmin Dakota compass pageGarmin Dakota compass calibration

Garmin has also changed the look and feel of the compass page, not only did they “supersize” the bearing pointer (you can still select the thin anemic pointer!), but the rotation of the compass and pointer is much smoother.   The pointer no longer jumps as you change your heading, it glides like a real compass.  Although I’m not a compass page navigator I think those who rely on the compass tool will like these changes on the Oregon 550t and Dakota.

GPS Performance

Even though I believe the GPS chipset is shared with the Oregon the antenna design may not be because of the Dakota’s smaller form factor.   I’ve run through a few head-to-head tests and the Dakota does have more track noise and variation than the Oregon.  Before I draw any conclusions though I’ll have to do more testing to determine if the Dakota might be a little less sensitive than the Oregon.  The Dakota has the same excellent fast lock performance as the Oregon does, once you’ve locked the first time and established the HotFix database the unit typically acquires satellite lock before it displays the map page.

UserDataSync

UserDataSync is a new feature which appeared on the Oregon 550t and has been both useful and an annoyance.   UserDataSync allows the GPS and external software like BaseCamp to share the same waypoint and route data.  This post on the Garmin TrailTech site summarizes the benefits of using BaseCamp with devices like the Oregon 550t and Dakota.

UserDataSync means that edits made on the GPS show up in BaseCamp and changes made in BaseCamp are reflected on the GPS the next time you restart the GPS.   That sounds great;  on the Dakota and Oregon 550t you no longer have to deal with the fact that waypoints and routes created on the GPS can only be edited and deleted on the GPS.

The issue with UserDataSync is that the support in BaseCamp (and other 3rd party software like ExpertGPS and TopoFusion) has not quite caught up yet.  If you try to archive trip data without the help of BaseCamp you have to hunt through three or four files to find all of your waypoints, routes, tracks, geocaches and saved tracks.   At least on the Oregon 550t, and I’m assuming the Dakota 20 although I haven’t tried yet, UserDataSync broke the ability to load GPX files from microSD card.  Hopefully this will be fixed in a future software release.

Miscellaneous

The user interface on the Dakota feels faster than the Oregon to me.   Maybe because the screen is smaller the redraws are faster but navigating around the screens is a pleasure. The boot time is about the same as the Oregon (10-12 seconds) if you take into account the added time to load maps on the 400t or 550t.

There are a few other minor software differences between the Oregon and Dakota:

  • Satellite page has a slightly different layout, probably to fit the compressed screen format
  • The Dakota background is always set to a solid color or a graduated shading using a single color.  Some of the light gray schemes are nice, I wish these were available by default on the Oregon.  Unfortunately this means you cannot use the all white background images we’ve been providing for Colorado and Oregon users which improve screen visibility and provide a place to display personal information when the unit is running (the Dakota does have support for the custom text message at startup).

Garmin Dakota satellite pageGarmin Dakota background color

The rest is extremely similar to the Oregon 300 except for a few features that have been eliminated on the Dakota:

  • Wherigo
  • 3D View
  • NMEA interface and Spanner support (temperature fields & settings removed)
  • Image viewer or photo viewer

Here are a few more screen shots of the Dakota, they should all look pretty familiar to Oregon users.  Note the map page does support terrain shading if the maps you are using support DEM (e.g. US TOPO 100k or 24k)

Garmin Dakota trip computerGarmin Dakota map page

Garmin Dakota main menuGarmin Dakota geocache page

Garmin Dakota elevation plot

Bundles

Many retailers are now bundling GPS receivers with software and accessories but I think this is the first time that I’ve seen Garmin do this directly.   There are least two bundles being offered by Garmin, both based on the Dakota 10.  The first is the Dakota 10 Bike and Hike bundle which includes the GPS, bike handlebar mount and City Navigator North America NT 2010 DVD road maps.  The second is the Dakota 10 Outdoor and Geocache Topo bundle which is being marketed through Dick’s Sporting Goods with a $50 off rebate. This bundle includes the GPS and a copy of TOPO U.S. 100K DVD.

Summary

It is still too early for me to make a recommendation on the Dakota but Garmin has put together many of the right ingredients to make the Dakota a great unit: they’ve crammed just about every feature you could want on the Oregon into the smaller package, offered it at a lower price point, threw in a 3-axis compass and improved the battery life.  I’m guessing the ~$300 price tag of the Dakota is going to be attractive to many people who really want the touchscreen and features of the more expensive Oregon but who don’t want to shell out $400-$500. If you spend a lot of time backwoods hiking and backpacking the increased battery life and smaller size of the Dakota will make more sense than the Oregon regardless of price.

I have two complaints about the Dakota: display readability and GPS receiver performance. The display is too hard to read especially considering that this is a screen which has the same resolution as the GPSMAP 60CSx.  I believe that the display alone may turn some people away from the Dakota to a GPSMAP 60CSx, an eTrex or a Delorme PN-40, all which have similar size and resolution screens but are easier to read outdoors. And then there’s the STM Cartesio GPS chipset which still has issues at walking speeds under tree cover.  I’m hopeful that these problems can eventually be fixed in software which would be a boost to the entire Oregon product line as well.

Garmin Dakota Wiki

Several weeks ago I set up the Garmin Dakota wiki as a central resource for Garmin Dakota owners.  The site currently supports a discussion group, the start of an FAQ and a Versions page.  I’ll be adding an Issues List to record the problems I uncover.  All Dakota owners (and perspective owners) are encouraged to join the wiki and participate.

Given the nature of the Dakota and the similarity of its software to the Oregon software I’ll probably make heavy reuse of the Oregon wiki for many of the FAQs and HowTo’s and only document the differences on the Dakota wiki.

Where to Buy

Only a handful of retailers have Dakotas right now but TheGPSStore.com has both the Dakota 10 and Dakota 20 in stock. GPSCity also has the Dakota 10 and Dakota 20 (shipping Monday).  REI would be my recommendation for users looking to jump to this new Garmin.  REI has the Dakota 10 in stock now and should have the Dakota 20’s by early next week.  Members get 10% off and you can’t do any better than REI’s return policy which is always an important consideration when purchasing a newly released model.

Related posts:

  1. Garmin Dakota 10 and 20 User Manual Published
  2. Garmin Dakota Leaks Continue
  3. Garmin Announces the Dakota: Palm-sized Touchscreen Outdoor GPS
  4. Garmin Dakota 20 FCC Photos Appear
  5. Garmin Dakota 10 and Garmin Dakota 20 Leaked!