•-165 d Bm sensitivity, 10 Hz updates, can track up to 22 satellites on 66 channels• Only 20m A current draw•RTC battery-compatible
- sew a battery on to create a atomic-precision real time clock• Built-in datalogging•>25 Km altitude• Position Accuracy: 1.8 meters• Velocity Accuracy: 0.1 meters/s, maximum velocity: 515m/s• Warm/cold start: 34 seconds• Vin range: 3.0-5.5VDC•MTK3339 Operating current: 25m A tracking, 20 m A current draw during navigation• Output: NMEA 0183, 9600 baud default•DGPS/WAAS/EGNOS supported•FCC E911 compliance & AGPS support (Offline mode: EPO valid up to 14 days )• Up to 210 PRN channels• Jammer detection & reduction• Multi-path detection & compensation• Internal patch antenna + u.FL connector for external active antenna• Fix status LED blinks at about 1 Hz while it's searching for satellites & blinks once every 15 seconds when a fix is found to conserve power•FIX signal sent out to a pin so have can have an LED on all the time if you want!• Comes with one fully assembled & tested module. This module is the best way to add a GPS to your wearable project. It's part of the Adafruit Flora series of wearable electronics, designed specifically for use with the Flora motherboard. Installed on the PCB is the latest of our Ultimate GPS modules, a small, super-thin, low power GPS module with built in data-logging capability! This module's easy to use, but extremely powerful. The breakout is built around the MTK3339 chipset, a no-nonsense, high-quality GPS module that can track up to 22 satellites on 66 channels, has an excellent high-sensitivity receiver (-165 d B tracking!), & a built in antenna. It can do up to 10 location updates a second for high speed, high sensitivity logging or tracking. Power usage is incredibly low, only 20 m A during navigation. The module is kept small & simple, we have a ferrite bead, filter capacitor & red fix LED on board. The LED blinks at about 1 Hz while it's searching for satellites & blinks once every 15 seconds when a fix is found to conserve power. If you want to have an LED on all the time, we also provide the FIX signal out on a pin so you can put an external LED on. Two features that really stand out about the MTK3339-based module is the external antenna functionality & the the built in data-logging capability. The module has a standard ceramic patch antenna that gives it -165 d B sensitivity, but when you want to have a bigger antenna, you can snap on any 3V active GPS antenna via the u FL connector. The module will automatically detect the active antenna & switch over! The other cool feature of the new MTK3339-based module (which we have tested with great success) is the built in datalogging ability. Since there is a microcontroller inside the module, with some empty FLASH memory, the newest firmware now allows sending commands to do internal logging to that FLASH. The only thing is that you do need to have the Flora mainboard send the " Start Logging" comm&. However, after that message is sent, the Flora can go to sleep & does not need to wake up to talk to the GPS anymore to reduce power consumption. The time, date, longitude, latitude, & height is logged every 15 seconds & only when there is a fix. The internal FLASH can store about 16 hours of data, it will automatically append data so you don't have to worry about accidentally losing data if power is lost. It is not possible to change what is logged & how often, as its hardcoded into the module but we found that this arrangement covers many of the most common GPS datalogging requirements.