Adafruit
Ultimate GPS Module - 66 channel w/10 Hz updates [MTK3339 chipset]
A high-sensitivity GPS module built around the MTK3339 chipset, capable of tracking up to 22 satellites on 66 channels with 10 Hz position updates. At just 1...
A high-sensitivity GPS module built around the MTK3339 chipset, capable of tracking up to 22 satellites on 66 channels with 10 Hz position updates. At just 16 × 16 × 5 mm and under 6 grams, it packs an internal patch antenna, built-in datalogging, and ultra-low power consumption into a tiny footprint.
The module features an external active antenna input that automatically detects and switches to an external antenna when connected. Built-in FLASH datalogging stores up to 16 hours of time, date, position, and altitude data at 15-second intervals — no microcontroller interaction needed after the initial start command.
Key Features
- MTK3339 Chipset – 66-channel, 22-satellite tracking with −165 dBm sensitivity
- 10 Hz Update Rate – High-speed position updates for tracking applications
- Built-In Datalogging – Internal FLASH stores ~16 hours of GPS data (LOCUS)
- Internal Patch Antenna – With automatic switchover to external active antenna
- Ultra Low Power – 20 mA during navigation
- PPS Output – Pulse-per-second signal on GPS fix
- RTC Battery Compatible – Supports backup battery for hot starts
Specifications
- Chipset – MTK3339
- Channels – 66 (22 tracking)
- Sensitivity – −165 dBm (tracking)
- Update Rate – Up to 10 Hz
- Operating Voltage – 3.3V
- Current Draw – 20 mA (navigation)
- Dimensions – 16 × 16 × 5 mm
- Weight – ~6 g
Ideal For
- Custom GPS tracker builds
- Datalogging and asset tracking
- High-altitude balloon projects (tested to ~32 km)
- Low-power portable GPS applications
Package Contents
- 1× GPS Module (MTK3339 chipset)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- 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.
- 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.
- 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.
Find this product in
Sensors & Input
Related Tutorials
Free guides on learn.littlebird.com.au
