The LOCOSYS LC20031-V2 integrates a global navigation satellite system (GNSS) receiver with an embedded antenna to create a complete GNSS module that can track up to 135 signals at a time from GPS and many other satellite systems, with support for both L1 and L5 bands.
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LOCOSYS LC20031-V2 135-Channel Dual-Band GNSS Receiver Module, top view with dimensions.
The LC20031-V2 smart antenna module from LOCOSYS receives global navigation satellite system (GNSS) signals on up to 135 channels. It supports the GPS, GLONASS, BeiDou, Galileo, and QZSS satellite systems and can receive signals in both the L1 and L5 frequency bands. The module outputs data in the NMEA 0183 sentence format defined by the National Marine Electronics Association; these NMEA sentences are transmitted on a TTL-level serial port (UART) at an update rate of up to 10 Hz. Since the GNSS module has an integrated patch antenna, you don’t need to buy an external antenna or worry about the many different antenna connectors. The module can typically acquire a fix from a cold start in 28 seconds, and, by saving information about the satellites it was last connected to, the LC20031-V2 can acquire a hot-start fix in as little as 2 seconds.
Connections for power and TTL serial communication can be made to the module through a polarized male connector on one side, which mates with an included cable assembly. The other end of the cable is terminated with a 6-pin JST GH-style connector; you can plug it into a matching receptacle, or you can cut off the connector to solder the four wire leads directly to your project.
LOCOSYS LC20031-V2 135-Channel Dual-Band GNSS Receiver Module with included cable, bottom view.
GNSS Firebird application showing data from an LC20031-V2 module inside Pololu’s offices.
The LC20031-V2 GNSS receiver module’s firmware is initially set to a 1 Hz update rate, a 115200 bps serial communication rate, and is set to output GGA, GLL, GSA, GSV, RMC, VTG, and GST NMEA sentences (see the LC2003x-Vx datasheet (2MB pdf) for more information). After connecting the LC20031-V2 to a computer using a serial port or USB-to-serial adaptor, you can use the GNSS Firebird (28MB zip) Windows application to change these default settings. (You can also download the latest version of the GNSS Firebird software directly from the LOCOSYS website.)
| Size: | 38 × 38 × 8.4 mm |
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| Weight: | 13.5 g1 |
| Minimum operating voltage: | 3.3 V |
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| Maximum operating voltage: | 5.25 V |
This datasheet for the MC-1612a-V2b module used on the LC20031-V2 has additional information about configuring the receiver.
A Windows application for configuring and displaying data from the LOCOSYS LC20031-V2 135-Channel Dual-Band GNSS Receiver Module. (You can also download the latest version of this software directly from the LOCOSYS website.)
GNSS Firebird application showing data from an LC20031-V2 module inside Pololu’s offices.
You can download the latest version of the GNSS Firebird Windows application for the LOCOSYS LC20031-V2 135-Channel Dual-Band GNSS Receiver Module here.
Description of various NMEA sentences by Glenn Baddeley.
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