/home/kevinh/development/lora/ttgo-tbeam-ttn-tracker/main/gps.ino: In function 'void buildPacket(uint8_t*)':
/home/kevinh/development/lora/ttgo-tbeam-ttn-tracker/main/gps.ino:83:42: warning: format '%f' expects argument of type 'double', but argument 3 has type 'int' [-Wformat=]
sprintf(t, "Alt: %f", altitudeGps);
I prefer platformio over the arduino IDE because
it automatically does library dependencies and
has lots of other goodness.
To build and install to a connected device just do:
pio run
geeksville