Review on 🌍 BN-880 GPS Module U8 with Flash HMC5883 Compass + Active Antenna - Car Navigation for Arduino, Raspberry Pi, Pixhawk, and APM Flight Controller by Jathan Louis

Very sensitive. A GPS that can be easily repaired indoors, which my portable GPS can't do. Note that the compass output is separate from the GPS output. GPS uses Tx Rx and outputs NMEA sentences. The compass uses I2c and outputs integers proportional to the X,Y,Z magnetic field. The compass output can be converted to direction, but only when the instrument is level. You need an accelerometer to do the equivalent of a compass on a gimbal. Both the compass and GPS work well, but it's better to think of this thing as two devices sharing a common power source than an integrated unit.