Flora Wearable Ultimate GPS Module

This remarkable GPS module is the ultimate solution for adding GPS functionality to your wearable project. It belongs to the Adafruit Flora series of wearable electronics, crafted specifically for use with the Flora motherboard. The PCB features our latest Ultimate GPS module, a tiny, ultra - thin, and low - power GPS module with built - in data - logging! It's easy to use yet incredibly powerful with the following features: - 165 dBm sensitivity, 10 Hz updates, and 66 channels; designed for seamless wearable use with the Flora system; only 20mA current draw; compatible with RTC battery, allowing you to sew a battery on for an atomic - precision real - time clock; built - in datalogging; an internal patch antenna plus a u.FL connector for an external active antenna; and a fix status LED. All these amazing features come at a price under $40! The breakout is based on the MTK3339 chipset, a high - quality GPS module that can track up to 22 satellites on 66 channels. It has an outstanding high - sensitivity receiver and a built - in antenna. It can perform up to 10 location updates per second for high - speed, high - sensitivity logging or tracking, with incredibly low power usage of only 20 mA during navigation. The module is compact and straightforward, with a ferrite bead, filter capacitor, and red fix LED on board. The LED blinks at about 1Hz while searching for satellites and once every 15 seconds when a fix is found to save power. You can also use the FIX signal out on a pin to connect an external LED. Two standout features are the external antenna functionality and the built - in data - logging. The standard ceramic patch antenna provides - 165 dB sensitivity, and you can easily attach a 3V active GPS antenna via the uFL connector, and the module will auto - detect and switch. The built - in datalogging lets you send commands to log data to the internal FLASH. Just have the Flora mainboard send the 'Start Logging' command, then it can go to sleep to save power. Data like time, date, longitude, latitude, and height is logged every 15 seconds when there's a fix. The internal FLASH can store about 16 hours of data and appends data automatically. It comes with one fully assembled and tested module. If you want faster fix - recovery, get a sewable CR2032 holder and battery and connect it properly.

Using this GPS module is a breeze. First, make sure it's installed on the Flora motherboard as it's designed for this system. If you want to use an external antenna, simply connect it via the u.FL connector. The module will detect it and switch over automatically. To use the real - time clock feature, sew a CR2032 battery onto the module following the instructions (connect the + side to the VBAT pad and the - side to ground). For data - logging, use the Flora mainboard to send the 'Start Logging' command. After that, the Flora can go to sleep to save power. As for the fix status LED, it blinks at different rates depending on whether it's searching for satellites or has found a fix. You can also connect an external LED using the FIX signal out pin if you prefer. When it comes to maintenance, keep the module clean and dry. Avoid exposing it to extreme temperatures or moisture. If you need to use an SMA - connected antenna, pick up a uFL to SMA adapter. And remember, the data - logging settings are hardcoded, so you can't change what's logged or how often, but it meets most common GPS data - logging needs.