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Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates - Version 3


$75.89 AUD, inc GST
$68.99 AUD, exc GST

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Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates - Version 3
75.89 AUD


$75.89 AUD, inc GST
$68.99 AUD, exc GST
10 reviews 0 5 4.9


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This is the Ultimate GPS module - The Version 3 board comes with the latest module which has external antenna support and pulse-per-second output.

We really like the latest-and-greatest GPS module from Adafruit. Here's why:

  • -165 dBm sensitivity, 10 Hz updates, 66 channels
  • 5V friendly design and only 20mA current draw
  • Breadboard friendly + two mounting holes
  • RTC battery-compatible
  • Built-in datalogging
  • PPS output on fix
  • Internal patch antenna + u.FL connector for external active antenna
  • Fix status LED

The breakout is built around the MTK3339 chipset - a, high-quality GPS module that can track up to 22 satellites on 66 channels, has an excellent high-sensitivity receiver (-165 dB tracking!), and a built in antenna. It can do up to 10 location updates a second for high speed, high sensitivity logging or tracking. Power usage is incredibly low, only 20 mA during navigation.

Best of all, Adafruit added all the extra goodies you could ever want: A ultra-low dropout 3.3V regulator so you can power it with 3.3-5VDC in; 5V tolerant inputs; ENABLE pin, so you can turn off the module using any microcontroller pin or switch; a footprint for optional CR1220 coin cell to keep the RTC running (allows for warm-starting); and a tiny bright red LED. The LED blinks at about 1Hz while it's searching for satellites and blinks once every 15 seconds when a fix is found, to conserve power. The FIX output can be used to drive an LED continuously when a location fix is present, or as a logic signal to a microcontroller.

Two features that really stand out about version 3 MTK3339-based module is the external antenna functionality and the the built in data-logging capability. The module has a standard ceramic patch antenna that gives it -165 dB sensitivity, but when you need a bigger antenna, you can snap on any 3V active GPS antenna via the uFL connector. The module will automatically detect the active antenna and switch over! Most GPS antennae use an SMA connector - you might need a uFL to SMA adapter.

We think the datalogging capability is really neat! Once the begin-logging command is sent to the GPS module, any attached microcontroller can be put into sleep mode to conserve power. The time, date, longitude, latitude, and altitude is logged every 15 seconds, and only when there is a fix. The module's internal flash can store about 16 hours of data, it will automatically append data so you don't have to worry about accidentally losing data if power is lost. It is not possible to change what is logged and how often - that's hardcoded into the module - but we found this arrangement covers many of the most common GPS datalogging requirements.

Comes with one fully assembled and tested module, a piece of header you can solder to it for breadboarding, and a CR1220 coin cell holder (coin cell not included). You can pick up a CR1220 coin cell here if you'd like to use the on-board RTC.

Adafruit have a nice fancy library for GPS usage, with background parsing and can set and query the built in GPS logging capability (called LOCUS). A full tutorial is also available, which has tons of information about the module, how to use the data logger and more

Technical Details

  • Satellites: 22 tracking, 66 searching
  • Patch Antenna Size: 15mm x 15mm x 4mm
  • Update rate: 1 to 10 Hz
  • Position Accuracy: < 3 meters (all GPS technology has about 3m accuracy)
  • Velocity Accuracy: 0.1 meters/s
  • Warm/cold start: 34 seconds
  • Acquisition sensitivity: -145 dBm
  • Tracking sensitivity: -165 dBm
  • Maximum Velocity: 515m/s
  • Vin range: 3.0-5.5VDC
  • MTK3339 Operating current: 25mA tracking, 20 mA current draw during navigation
  • Output: NMEA 0183, 9600 baud default
  • DGPS/WAAS/EGNOS supported
  • FCC E911 compliance and AGPS support (Offline mode : EPO valid up to 14 days )
  • Up to 210 PRN channels
  • Jammer detection and reduction
  • Multi-path detection and compensation

Revision History:

  • As of 8/10/2014 Adafruit are shipping with firmware v. 5632 which improves altitude calculations and stability. It is equivalent in all other functionality and is a drop-in replacement.

Breakout board details:

  • Weight (not including coin cell or holder): 8.5g
  • Dimensions (not including coin cell or holder): 25.5mm x 35mm x 6.5mm / 1.0" x 1.35" x 0.25"

Datasheets, schematics, GitHub links, Fritzing and more available in the product tutorial

This product is listed in:

Documentation and Resources:
  • How to use GPS with Arduino - Parse and Log NMEA Sentences
  • Now that we've investigated and explained how How GPS Receivers work we can apply that understanding to some real-world applications of of the ideas. To start, we can use any GPS receiver, an Arduino Uno and some male-to-female Jumper cables. We...
  • How GPS Receivers work
  • GPS is accurate and handy to use, so much so that we rely on it more and more every day. It's not often we take the time to learn how it works. The idea of GPS refers to a Global Positioning System; a collection of satellites in orbit above the Earth...
  • The Maker Revolution
  • The Maker Revolution celebrates the creation of new devices and the modification of existing ones - the transition from a consumer buying goods to eventually having a major part in their creation. The Maker Revolution places strong emphasis on free (...

Product Comments

Customer Reviews

  1. Review by Matthew verified purchaser

    Havent tried it just yet, looks like it will be fun! Like the option for external antenna (Posted on 6/12/2018)

  2. Review by Peter verified purchaser

    The ADAFruit ultimate GPS module is very easy to setup and use. I had previously tried the Copernicus module from Sparkfun, the ADAFruit module requires fewer connections and is a smaller from factor than the Copernicus. Also the ADAFruit comes with a coin cell holder (CR1220 type) so it will be possible to warm start this unit more quickly than other GPS receivers with battery backup. The ADAFruit Ultimate GPS module (Version 3.0) from Core electronics is a great way to to get up to speed with GPS and NMEA sentence decoding. The small factor means it fits easily onto a breadboard for easy hookup to Arduino or just use a simple serial adapter such as a FTDI USB Serial port converter. The module includes a LED to show fix status, this is also useful to confirm you have everything connected OK.
    (Posted on 24/11/2018)

  3. Review by Stefan verified purchaser

    Excellent GPS module. Easy to use. Provides PPS output. I'm using it to synchronise the clock on a Raspberry PI. (Posted on 30/06/2018)

  4. Review by Gregory verified purchaser

    Wonderful GPS. Small and very quick. Just a small thing -- I found that the first fix after firing it up for the first time took a VERY long time (about 20 minutes). Since then, it acquires a fix very quickly on powerup (about 15 seconds) and updates quickly and accurately. My search for the ideal GPS module is over. Will definitely buy another. (Posted on 6/03/2018)

  5. Review by David verified purchaser

    Great little module and easy to get working. Did find when using theAdafruit GPS library that the notes in the library do not recommend using any higher than 1Hz.
    I tried Hhz with a mega2560 and it has been ok so far.
    Just ordered a Due from Graham to see if I can get the 10Hz to work for a GPS race timer for the local High School entry in this years RACQ Technology challenge HPV race. (Posted on 29/02/2016)

  6. Review by Laurens - My review verified purchaser

    I'm not sure what I am to say... I ordered the item and you delivered it.. I am yet to use it....
    Its not like a ham sandwich or a coffee, I cant rate it out of 10....

    Core Electronics staff - thanks Laurens! Glad to hear your product arrived and hopefully you can let us know how you get on with this product when you get a chance :) (Posted on 8/02/2016)

  7. Review by Mark - Great Product and Service verified purchaser

    Delivery was quick, its great being able to order the product in Australia, without having to wait for international post.
    The board worked great too, had no trouble getting it working with an arduino uno (Posted on 28/12/2014)

  8. Review by Matt - Excellent Board verified purchaser

    Board works exactly as expected, perfect for use with any Arduino based project. (Posted on 9/12/2014)

  9. Review by Cliff - Works great and very fast postage verified purchaser

    Just the unit I needed without waiting from overseas, the built in 3V regulator and filtering made hookup a breeze with my little 250mw QRSS/WSPR transmitter.

    (Posted on 4/05/2014)

  10. Review by splint - Very Happy verified purchaser

    Great product, content on website allowed me to make a very informed decision and the delivery was fast. I will be buying more from core electronics. (Posted on 28/11/2013)

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