Description of product: Adafruit Ultimate GPS - MTK3339 GPS module with antenna
Board with the MTK3339 GPS module that can track up to 22 satellites for 66 channels. The system has a built-in antenna, the receiver's sensitivity is 165 dB. It works with the pd voltages from 3 V to 5 V, it consumes only 20 mA of current. The update frequency is 10 Hz, which means the new data 10 times per second.
Low power consumption
Through the use of the ENABLE pin, the module can be switched into low power consumption status from the GPIO pin of any microcontroller. Connector for battery CR1220, so-called small pill that allows you to maintain the RTC in the absence of main power supply.
Monitoring the status
The LED indicator allows to monitor the status of the GPS module. Blinking with a frequency of about 1 Hz means searching the satellites, the appearance of light every 15 seconds, indicates finding the FIX. The LED signal is displayed on the goldpin FIX connector so you can read it on the microcontroller.
Range
Built-in ceramic antenna yields a sensitivity of 165 dB, to increase this parameter, the external version can be attached via u.FL connector. Since most of the available antennas has the SMA connector, in our offer, you will find a suitable u.FL - SMA adapter.
Data recording
The MTK3339 module has a built-in Flash memory which allows for recording the measuring data. You need to send an appropriate command from the microncontroller and the collected data (time, date, latitude and longitude) will be stored in memory. At this time, the microcontroller can be switched into sleep mode and can be "woken up" only after reading the collected information. Internal memory allows to record up to 16 hours of data.
The set includes: board, connectors for self-soldering.
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The product is compatible with Arduino and Raspberry The manufacturer providesthe Arduino libraryalong withthe user manual. Description of the connection to the Raspberry Pi can be found atthis address. |
Basic module features:
- Supply voltage: from 3.0 V to 5.5 V
- Current consumption: 25 mA - during the satellite search, 20 mA - during navigation
- Communications: NMEA 0183, 9600 bps
- Positioning accuracy: up to 3M
- Sensitivity: -165 dBm
- Update: 10 Hz
- Low current consumption: about 20mA
- The ability to track up to 22 satellites
- Built-in Flash memory to save data
- Warm/cold start: 34 seconds
- The LED indicating the FIX status
- Support for DGPS/WAAS/EGNOS
- Maximum height: theoretical, given by the manufacturer - 40 km, tested - 32 km
- It has a built-in antenna and a connector for external u.FL version
- Built-in RTC provides a record of the real time
- Provided, free libraries facilitate using the shields
- Dimensions: 25.5 x 35,0 x 6.5 mm
- Weight: 8.5 g
Pins
| Pin | Description |
|---|---|
| VIN | Supply voltage from 3.0 V to 5.5 V. |
| GND | The ground of the system |
| TX, RX | Connectors of the serial GPS NMEA 0183 interface - 9600 bps. |
| FIX | The output indicating the device status - it is the same that is connected to status LED. |
| VBAT | Pin in combination with the extra power supply of a real time clock, it is connected to the battery connector. The maximum voltage that can be applied to this pin is 3.3 V. |
| EN | Pin allows to turn off the module using any GPIO of the microcontroller. By default, it is pulled up to VIN via 10 kΩ, indicating the low status, shuts down the system. |
| 3.3 V | Regulator's output of 3.3 V with a maximum current of 100 mA. |
| PPS | The output of the pulse-per-second signal of the GPS module. |
Useful links |
