M5Stack RF Modules

M5Stack RF Modules feature an integrated built-in active antenna and provide high sensitivity and minimal acquisition times while maintaining low power usage. The modules integrate a 72-channel u-blox M8 GNSS engine. They support multiple GNSS systems ( Beidou, Galileo, GLONASS, GPS / QZSS ) and are able to receive 3 GNSS systems simultaneously. The series communication protocol between the M5Core and GPS is UART, physically connected via UART2 (GPIO16, GPIO17).