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Product description: GPS / BDS Unit with SMA antenna - AT6668 - Unit expansion module - M5Stack U190
GPS / BDS Unit is a compact GNSS module with AT6668 chip and external active SMA antenna , providing high sensitivity and positioning precision. The module supports many global systems (GPS, GLONASS, Galileo, QZSS, BD2, BD3) and can work in combined or independent mode for each system. Efficient antenna with 30 dBi gain and support for many frequencies make the module ideal for mobile and industrial applications. Thanks to support for many programming platforms and universal UART interface, the module can be easily integrated with various projects based on microcontrollers.
Also check out the user guide prepared by the manufacturer!
GPS / BDS Unit with SMA antenna - AT6668 - Unit expansion module - M5Stack U190.
Supports multiple satellite navigation systems (GPS/QZSS/BD2/BD3/GAL/GLO).
Main Features of GPS/BDS Unit
- Multi-system GNSS support : GPS, QZSS, BD2, BD3, GLONASS, GALILEO
- Multi-channel receiver : up to 50 channels of simultaneous operation
- High location precision : accuracy up to 1.5 m (CEP50)
- External SMA active antenna : stable signal and better range
- Fast start time : Cold start: 23 s, Hot start: 1 s
- High receive sensitivity : -162 dBm (tracking), -160 dBm (initialization)
- UART Support : Default 115200 bps, 8N1
- Wide compatibility : Arduino, ESP32-IDF, UIFlow
- Low power consumption : approx. 40 mA in operating mode
Module connection and compatibility
The module communicates via UART interface and works at 115200 bps by default. GND, 5V, TX and RX connections are required for communication - 4-pin plug with 2 mm pitch (supplied in the kit) fits Grove type ports (PORT.C). The module works with many programming platforms, such as Arduino IDE, ESP32-IDF and UIFlow , which provides great versatility of integration with various M5Stack series microcontrollers, such as Core , Atom or StickC .
The module offers two Lego-compatible holes.
The module has an SMA connector for an external antenna included in the kit.
Practical applications
The GPS / BDS Unit module is ideal for:
- Navigation systems for autonomous vehicles
- Drone and mobile device location
- Intelligent transport systems
- Bus stop announcement systems
- Location monitoring in IoT devices
- Mobile Tracking Devices and Sports Apps
- Geotagging photos or field measurements
Technical specification of the module
- Chip: AT6668
- Supported systems: GPS, QZSS, BD2, BD3, GALILEO, GLONASS
- Supported Bands: BDS: B1I + B1C, GPS/QZSS/SBAS: L1, GALILEO: E1, GLONASS: R1
- Channels: 50
- Protocol: NMEA0183 4.1
- Sensitivity: Tracking: -162 dBm / Initialization: -160 dBm / Cold Start: -148 dBm
- Start time: Cold start: 23 sec / Hot start: 1 sec
- Positioning accuracy: < 1.5 m (CEP50)
- Position update rate: up to 10 Hz
- Communication interface: UART (115200 bps at 8N1)
- Current consumption: operating mode: 40.9 mA / standby mode: 31.64 mA
- Antenna: SMA, active, gain 30 dBi, from 1555 MHz to 1580 MHz, cable length 1 m, dimensions 38 x 36 x 13 mm
- Dimensions: 71.4 x 24 x 8 mm
- Weight: 11.2 g
Kit Contents
- 1x GPS/BDS Unit
- 1x Active SMA antenna (external)
- 1x Grove Cable (20cm)
Items included in the set.
