One little question, in what format must be the GPS data? I have a old Garmin Geko 201 which has a RS-232 Interface and supports NMEA 0183 as output. So my idea is to combine it with a Heltec V2 ESP32 Lora Modul to have a tracker with GPS Modul. But i need to know in which format the GPS data is accepted by the TTNMapper.