This GPS device from M5Stack features an AT6558 navigation chip and a MAX2659 amplifier chip to enhance the antenna signal. The AT6558 is highly efficient and supports various types of satellite navigation systems, capable of receiving satellite signals on 56 channels from 6 satellite navigation systems. The module can obtain accurate location information, allowing for precise positioning anywhere in the city or in a vehicle.

This unit communicates with the M5Core via the UART protocol and connects to the M5Core through PORTC.

UART settings:
Default baud rate: 19200 bps
Start bits: 1 bit
Stop bits: 1 bit
Parity: none

Technical details:
Positioning accuracy: 2.5 meters (CEP50, open area)
Channels: 56
Supports: GPS/GLONASS satellite navigation systems
Supports D-GNSS differential positioning
Positioning update frequency: 1-10 Hz
Maximum altitude: 1800 m
Maximum speed: 515 m/s
Maximum acceleration: <= 4 G
BDS/GPS dual mode continuous operation: <23 mA (@3.3 V)
Standby: <10 µA (@3.3 V)
Sensitivity:
Tracking: -162 dBm
Acquisition: -148 dBm
Cold start: -146 dBm
Start times:
Cold start: 35 seconds
Warm start: 32 seconds
Hot start: 1 second
Operating temperature: -40 °C to 85 °C
Interface: Grove C
Mounting: Two Lego-compatible holes
Connector: PH2.0 4 Pin
Dimensions: 48.2 x 24.2 x 8.2 mm
Weight: 25 g

Package contents:
1x M5Stack Mini GPS/BDS Unit AT6558
1x GROVE cable 20 cm
1x Storage box.