GPS Module v2.1 with Antenna (ATGM336H)

The M5Stack Module GPS v2.1 is a high-performance GNSS module powered by the AT6668 chip, supporting GPS, BD2, BD3, GLONASS, GALILEO, and QZSS for precise, multi-system positioning with strong anti-interference and fast signal acquisition. It includes an external SMA antenna, DIP switch for TX/RX selection, and PPS output for time sync. Ideal for IoT, navigation, and automation, it now offers enhanced CoreMP135 compatibility and five UART pin options.

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M5Stack Module GPS v2.1 is a high-performance GNSS global positioning module that integrates the AT6668 high-performance chip to provide accurate and reliable satellite positioning services. The module supports multi-frequency and multimode GNSS signal reception and is compatible with multiple satellite navigation systems, including GPS, BD2, BD3, GLONASS, GALILEO, and QZSS.

It enables high-precision multi-system joint positioning or single-system independent positioning with excellent anti-interference capabilities. In weak signal areas, it can quickly obtain higher-precision location information.

The module comes standard with an external SMA antenna. In addition, it features a DIP switch that allows flexible switching of TX/RX communication pins, and precise time synchronization via PPS signal output.

It is suitable for high-precision positioning applications such as in-vehicle navigation, IoT positioning devices, remote monitoring, smart cities, smart home, and industrial automation. Compared with the previous Module GPS v2.0, this product has optimized interface compatibility to support CoreMP135, and the UART pin options have been increased from four to five.

Features

• Supports multiple satellite navigation systems (GPS/QZSS/BD2/BD3/GAL/GLO)
• Multi-frequency multi-system reception
• Multi-channel
• Low power consumption
• Precise time synchronization support
• Supports module stacking
• Development Platform
  • UiFlow1
  • UiFlow2
  • Arduino IDE

Specifications

Specification	Parameter
SoC	AT6668
Supported GNSS	GPS/QZSS/BD2/BD3/GAL/GLO
Frequency Bands	BDS: B1I+B1C GPS/QZSS/SBAS: L1 GALILEO: E1 GLONASS: R1
Channels	50 channels
Positioning Accuracy	<1.5m (CEP50)
Update Rate	Up to 10Hz
Protocol	NMEA0183 4.1
Sensitivity	Tracking: -162dBm Acquisition: -160dBm Cold start: -148dBm Hot start: -156dBm
Start Time	Cold start: 23s Hot start: 1s
Power Consumption	Standby current: DC 5V/29.43uA Operating current: DC 5V/28.35mA
Antenna Frequency	1555MHz ~ 1580MHz
Product Size	54.0 x 63.6 x 13.1mm
Product Weight	16.0g

Resources

• Documentation

Package Contents

• 1 x Module GPS v2.1
• 1 x External active GPS/BD antenna (length: 1m)