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

SKU: ADA746

$67.00 AUD, inc GST

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

SKU: ADA746

$67.00 AUD, inc GST
6 reviews 0 5 4.9
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New! Version 3 comes with the latest module which has external antenna support and Pulse-Per-Second output

We carry a few different GPS modules here in the Adafruit shop, but none that satisfied Adafruit's every desire - that's why Adafruit designed this little GPS breakout board. Adafruit believe this is the Ultimate GPS module, so they named it that. It's got everything you want and more:

  • -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

...all for under $40!

The breakout is built around the MTK3339 chipset, a no-nonsense, 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 level safe 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 and allow warm starts 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. If you want to have an LED on all the time, They also provide the FIX signal out on a pin so you can put an external LED on.

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 want to have 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 antennas use SMA connectors so you may want to pick up one of Adafruit's uFL to SMA adapters.

The other cool feature of the new MTK3339-based module (which Adafruit have tested with great success) is the built in datalogging ability. Since there is a microcontroller inside the module, with some empty FLASH memory, the newest firmware now allows sending commands to do internal logging to that FLASH. The only thing is that you do need to have a microcontroller send the "Start Logging" command. However, after that message is sent, the microcontroller can go to sleep and does not need to wake up to talk to the GPS anymore to reduce power consumption. The time, date, longitude, latitude, and height is logged every 15 seconds and only when there is a fix. The 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, as its hardcoded into the module but we found that 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. A CR1220 coin cell is not included, but Adafruit have them in the shop if you'd like to use the GPS's 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

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Product Comments

Documentation and Resources:

Customer Reviews

  1. Review by David verified purchaser
    Rating
    80

    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)

  2. Review by Laurens - My review verified purchaser
    Rating
    100

    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)

  3. Review by Mark - Great Product and Service verified purchaser
    Rating
    100

    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)

  4. Review by Matt - Excellent Board verified purchaser
    Rating
    100

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

  5. Review by Cliff - Works great and very fast postage verified purchaser
    Rating
    100

    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)

  6. Review by splint - Very Happy verified purchaser
    Rating
    100

    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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