it return this error
arduino-0018\libraries\GPS_MTK\GPS_MTK.cpp:58: error: 'Serial1' was not declared in this scope
I tried to eliminate the "1" in all the serial1 that appear in the .cpp file, reload arduino 18 and now compiles right.
BUT the altitute is different to the one in nmea (nmea +30 +60m binary -6 +6 (m? feet?) .google earth tells I'm at 8m and is right because I'm so close to the sea, who can tell why they are so different?).
my personal target is to have a serial gps stream that can be sent over a 1000bps wireless transceiver (frsky telemetry module) to the ground station that uses an arduino 2009 .
I was hoping to use the binary protocol but can't calculate how many bps it uses, I find no info about that protocol around the world, any help? for wxample is speed in mph or what?