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...
Get notified when back in stock
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 board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny 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 single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- 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
