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Adafruit Ultimate GPS Breakout - 66...
Adafruit Ultimate GPS Breakout - 66 channels with frequency update at 10 Hz - MTK3339 circuit. Revision 3
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This version 3 comes with a complementary connector to connect any external antenna (the internal antenna is sufficient in many cases) and a complementary output Pulse-Per-Second.
Here is one of the smallest and most advanced GPS module available. It is probably one of the models able to meet all the desires (or almost) of its users. That's why Adafruit (the designer) has stamped it under the "Ultimate" version.
This module has everything you need, see more, with its sensitivity to -165dBm, its adapted design to support 5V, its impaction of 2.54 mm (ideal for breadboard), its fixing holes, update 10 Hz, 66 channels, a real time clock (RTC) supporting a battery and a status LED all for less than 40 Euro all taxes included!
This new version based on the MTK3339 has a circuit-integrated data logging capability with "High altitude" functionality and ever-lower consumption.
This breakout board is designed around the MTK3339 circuit, a high quality, practical GPS module that can track up to 22 satellites on 66 channels. it has an excellent receiver very sensitive (-165 dB for the localization!) and an integrated antenna. It can do up to 10 position updates per second, which allows data logging and location at high speed and high sensitivity.
The consumption is incredibly low, only 20mA during navigation (displacement).
The best is yet to come, Adafruit has added a series of "more" really useful on the breakout board, namely:
The two things that really distinguish this new MTK3339 module from others are:
Most GPS modules only allows NMEA outputs (GPS data transmission protocol) only when the module travels below 515 m/s (1854km/h) AND when it's at an altitude of less than 18.000 m (60,000 ft).
The purpose is to prevent this module from being used for military used.
But since these requirements are not so strict, Adafruit asked the manufacturer to lift the limitation on altitude (but to keep the limitation on speed), which would allow the use of GPS in weather type applications.
Adafruit trusts its manufacturer when it claims to have lifted the limitation but, for the time being, no independent test has confirmed this lifting of limitation. If this feature is really critical for you, please postpone your purchase until verification!
Another great feature of the new MTK3339 module (successfully tested by Adafruit) is its integrated data logging capability within the module. Since the module is equipped with a micro-controller and has a FLASH memory, the new Firmware now allows sending commands to make an internal recording of data to the FLASH memory.
The only thing you will need is a micro-controller that can send the "Start Logging" command. After sending the message, the micro-controller can enter sleep mode because it no longer needs to interact with the GPS. (which reduces its consumption). The date, time, longitude, altitude and height are logged (recorded) every 15 seconds and only when there is GPS synchronization (FIX).
The internal FLASH memory is capable of storing about 16 hours of data. The module automatically adds the data,so you do not have to worry about a risk of data loss when the module is powered down.
It is not possible to configure logged information and data logging frequency. These settings are hard-coded in the GPS module. They are however correct to meet most GPS data logging needs.
Need an external antenna.
Adafruit Industries Ltd provides the enclosed product(s) under the following conditions:
This evaluation board/kit/module is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by Adafruit Industries Ltd to be finished end-product fit for general consumer use. Persons handling the product must have electronics training and observe good engineering practice standards. As such the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing related protective considerations, including product safety and environmental measures typically found in the products that incorporate such semiconductor components or circuit boards. This evaluation board/kit/module does not fall within the scope of the European Union directives regarding electromagnetic compatibility, FCC, CE or UL and therefore may not meet the technical requirements of these directives or other related documents.
Creating a prototype with this evaluation board/kit/module must repect the applicable law in the country, including radio frequency regulations. Creating a product with this evaluation board/kit/module must also follows the applicable laws and regulations, the final assembly MUST BE CERTIFIED be certified accordingly to European RED directive and/or its translation in the local law.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further the user indemnifies Adafruit Industries Ltd and MC Hobby SPRL from all claims arising from the handling or use of the goods. Due to the open construction of the product, it's the user responsibility to take any and all appropriate precautions with regard to electrostatic discharge, conducted and radiated emissions.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES.