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Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates [Version 3]
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$60.81
$97.00
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The Adafruit Ultimate GPS Breakout (Version 3) is a high-performance GPS module built around the MTK3339 chipset. With 66 channels, -165 dBm tracking sensiti...
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The Adafruit Ultimate GPS Breakout (Version 3) is a high-performance GPS module built around the MTK3339 chipset. With 66 channels, -165 dBm tracking sensitivity, and up to 10 Hz position updates, it delivers accurate and responsive location data for a wide range of projects.
Version 3 introduces external antenna support via a u.FL connector and a Pulse-Per-Second (PPS) output. The module automatically detects when an active antenna is connected and switches over from the built-in ceramic patch antenna. A built-in datalogging feature lets you log GPS data to internal FLASH memory — even while your microcontroller sleeps.
Key Features
- 66-Channel Receiver – Tracks up to 22 satellites with -165 dBm sensitivity
- 10 Hz Updates – Up to 10 position updates per second for high-speed tracking
- Ultra-Low Power – Only 20 mA current draw during navigation
- 5V Friendly – Built-in 3.3V regulator accepts 3.3–5V DC input with 5V-safe logic levels
- Dual Antenna Support – Internal ceramic patch antenna plus u.FL connector for an external active GPS antenna (auto-switching)
- Built-in Datalogging – Logs time, date, longitude, latitude, and altitude every 15 seconds to internal FLASH (approx. 16 hours of storage)
- PPS Output – Pulse-Per-Second signal output on GPS fix
- RTC Battery Backup – Footprint for CR1220 coin cell holder enables warm starts
- ENABLE Pin – Turn the module on/off via any microcontroller pin or switch
- Fix Status LED – Blinks at 1 Hz while searching, once every 15 seconds when fix is acquired
- Breadboard Friendly – Standard 0.1" header spacing with two mounting holes
Ideal For
- GPS tracking and datalogging projects
- Drone and robotics navigation
- Outdoor and vehicle location systems
- Time-synchronisation applications using PPS output
- Low-power portable GPS devices
Package Contents
- 1× Adafruit Ultimate GPS Breakout v3 (fully assembled and tested)
- 1× 0.1" header strip (for soldering)
- 1× CR1220 coin cell holder (battery not included)
Tip: Most GPS antennas use SMA connectors — you may need a uFL-to-SMA adapter cable for external antenna use.
Note: A CR1220 coin cell battery is required separately for the RTC backup feature.
Resources
- Adafruit Ultimate GPS Learning Guide – Wiring, datalogging, example code for CircuitPython & Arduino
Jargon buster
Plain-language definitions for the technical terms used above.
- 3.3V regulator
- A 3.3V regulator is a power circuit that provides a steady 3.3 volts for parts that need that supply voltage. On a breakout board, it can let the sensor run safely even when the connected microcontroller or power source uses a higher voltage.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- CircuitPython
- A beginner-friendly version of Python designed to run directly on microcontroller boards. If a product supports CircuitPython, you can often program it by copying code files onto the board rather than setting up a more complex toolchain.
- Flash memory
- Non-volatile memory that keeps stored data even when power is removed. In this sensor, it matters because enrolled fingerprint templates can remain saved after the project is turned off.
- GPS
- The US satellite navigation system used by GNSS receivers to calculate position and time. Support for GPS is important because it is widely available and often used together with other constellations for more reliable positioning.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- RTC
- A Real-Time Clock keeps track of time even when the main processor is asleep or powered down, usually with a small backup battery. It matters for data logging and tracking projects that need accurate timestamps.
- SMA
- A threaded coaxial connector commonly used for antennas. It matters because you need antennas with matching SMA connectors, or suitable adapters, for the LTE and GNSS antenna ports.
- u.FL
- u.FL is a tiny snap-on antenna connector often used on compact wireless boards. A board with u.FL usually needs an external antenna, which matters if the product will be inside an enclosure or needs better antenna placement.
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