Difference Between M5Stack Module GPS and Module GPS V2.0

M5Stack Module GPS

• Chipset: Uses the u-blox M8 NEO-M8N, which supports multiple GNSS systems like Beidou, Galileo, GLONASS, GPS/QZSS, and can receive signals from up to 3 GNSS systems simultaneously.

• Antenna: Features a built-in ceramic antenna with an option for an external antenna for better reception.

• Communication: Utilizes UART for communication, connected via GPIO16 and GPIO17 on M5Stack Core boards. Default baud rate is 9600 bps.

M5Stack Module GPS V2.0

• Chipset: Equipped with the ATGM336H module, which includes the AT6668 chip, supporting GPS, BD2, BD3, GLONASS, GALILEO, and QZSS. It offers multi-frequency and multi-mode GNSS signal reception.

• Antenna: Comes with an external SMA antenna, which can be advantageous in environments with low signal strength.

• Communication: Also uses UART but includes a dip switch for flexible TX/RX pin configuration and a PPS signal for precise timing.

• Module GPS v2.0 Arduino Guide
• Module GPS v2.0 Arduino Library

Satellite System Support: While both modules support multiple GNSS systems, the V2.0 has enhanced capabilities for multi-frequency and multi-mode reception, potentially offering better accuracy in challenging environments.

Antenna Design: The original module has both internal and external antenna options, whereas the V2.0 emphasizes an external SMA antenna, which might be more effective in weak signal areas.

User Flexibility: The Module GPS V2.0 provides more user control over communication settings with the dip switch for pin selection, which can be crucial for compatibility with different M5Stack setups or other development platforms.

Power Management: There might be considerations around power consumption and management, especially with the V2.0's external antenna setup, but explicit details on power usage aren't directly compared in available documentation.

Accuracy and Acquisition: The V2.0 is designed for high-precision applications, offering quicker satellite lock times and better anti-jamming capabilities due to its advanced chipset and antenna design.

Use Cases: The original module might suffice for general hobbyist projects where space or cost is a concern. The V2.0, however, would be more suitable for applications requiring high accuracy, like professional navigation, drone positioning, or IoT devices in areas with obstructed views of the sky.