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GPS

GPS modules: NEO-6M with active antenna, NEO-M8N GPS and GLONASS receiver, Ai Thinker GP-02 GNSS kit and A9 GSM/GPRS module.

Satellite positioning modules: the NEO-6M with active antenna, the more sensitive NEO-M8N that adds GLONASS, and the Ai Thinker GP-02 multi-system GNSS kit. They send position data over UART (NMEA sentences), read with the TinyGPS++ library. The first fix can take a few minutes, and the antenna needs a clear view of the sky. For tracking, combine with a GSM module.

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