Adafruit Ultimate GPS Breakout - Version 3


Specs

  • -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
  • Version 3 comes with the latest module which has external antenna support and Pulse-Per-Second output

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


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.


Pinouts

  • GPS Vin to Breakout 5V or 3V (Physical pin 4)
  • GPS Ground to Breakout Ground (Physical pin 6)
  • GPS RX to Breakout TX (Physical pin 8)
  • GPS TX to Breakout RX (Physical pin 10)
  • GPS PPS to Breakout Physical pin 7 = RPi Logical pin GPIO4


Product page

Adafruit Ultimate GPS Breakout - Version 3 product page
Adafruit Ultimate GPS module pinouts, wiring and code examples


Schematic