Introducing the MTK3339-based GPS Module, the perfect solution for adding GPS functionality to your wearable projects. Designed as part of the Adafruit Flora series, this module is compact and powerful, ideal for integration into small, lightweight electronics. With -165 dBm sensitivity and the ability to track up to 22 satellites, it provides accurate positioning even in challenging environments. The module offers a 10 Hz update rate for fast, real-time tracking, making it perfect for high-speed applications. Plus, its low power consumption of only 20mA during navigation makes it an energy-efficient choice for wearable tech.

One of the standout features of this module is its built-in data logging capability. Using the internal FLASH memory, the GPS module can record time, date, latitude, longitude, and height every 15 seconds, storing up to 16 hours of data. Once the logging command is sent, the Flora mainboard can go into sleep mode to conserve power, while the GPS continues logging autonomously. This feature is perfect for applications where continuous tracking is required, and it eliminates the need for constant communication with the mainboard.

Additionally, the module supports an external active GPS antenna via a u.FL connector, providing flexibility for enhanced reception in areas where the internal patch antenna might struggle. It also features a fix status LED, making it easy to monitor satellite connections. Whether you're building a wearable navigation system or experimenting with location-based projects, this GPS module delivers high precision and reliability, making it a must-have for any tech enthusiast.

Features:

• High Sensitivity: -165 dBm tracking, 22 satellites supported for accurate positioning
• Low Power Consumption: 20mA during navigation, 25mA during tracking for energy-efficient operation
• Data Logging Capability: Logs time, date, latitude, longitude, and height every 15 seconds, storing up to 16 hours of data
• Fast Update Rate: 1 to 10 Hz, ideal for high-speed, real-time tracking
• Built-in Patch Antenna: 15mm x 15mm ceramic antenna, with u.FL connector for external active antenna
• Compact Size: Perfect for wearable and portable projects
• External Antenna Support: Automatically switches to external active GPS antenna when connected
• Fix Status LED: Indicates satellite connection status
• Wide Compatibility: Supports NMEA 0183 output at 9600 baud default, DGPS/WAAS/EGNOS supported
• FCC E911 Compliant: Includes AGPS support for faster satellite acquisition

Specifications:

• Satellites: 22 tracking, 66 searching
• Patch Antenna: 15mm x 15mm x 4mm
• Update Rate: 1 to 10 Hz
• Position Accuracy: 3 meters
• Velocity Accuracy: 0.1 meters/s
• Warm/Cold Start: 34 seconds
• Acquisition Sensitivity: -145 dBm
• Tracking Sensitivity: -165 dBm
• Maximum Velocity: 515 m/s
• Voltage Input: 3.0-4.3 VDC
• Operating Current: 25mA (tracking), 20mA (navigation)
• Output: NMEA 0183, 9600 baud default
• DGPS/WAAS/EGNOS supported
• FCC E911 compliance, AGPS support (EPO valid for 14 days)
• PRN Channels: Up to 210
• Jammer Detection and Reduction
• Multi-path Detection and Compensation

TECHNICAL DETAILS

• Datasheet
• EagleCAD PCB files, datasheets, Fritzing object and more in the tutorial!