Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates - PA1616S

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Description

We carry a few different GPS modules here in the Adafruit shop, but none that satisfied our every desire - that's why we designed this little GPS breakout board. We believe this is the Ultimate GPS module, so we 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
• New! Version 3 comes with the latest module which has external antenna support and Pulse-Per-Second output

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 dBm 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, we added all the extra goodies you could ever want: an 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, we 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 are the external antenna functionality and the built-in data-logging capability. The module has a standard ceramic patch antenna that gives it -165 dBm 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!

We 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, example code for both CircuitPython & Arduino, 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, 3V logic level out, 5V-safe input
  
• 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

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
• PA1616S module datasheet

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