Geekstory BN-880 GPS Module U-blox M8030 Support GPS GLONASS BeiDou For Pixhawk APM Flight Controller

Works great with ArduPilot

Works as expected. Lost my original in a crash and this was an exact replacement. Warms up quick and locks onto sats quickly.

Very sensitive. GPS which easily gets a fix indoors, something my handheld gps cannot do. Note that the compass output is separate from the GPS output. GPS uses Tx Rx and outputs NMEA sentences. Compass uses I2c and outputs integers that are proportional to the X,Y,Z magnetic field. The compass output can be converted to a direction, but only when the unit is level. You need an accelerometer to make the equivalent of a gimbaled compass. Both the compass and GPS work well, but it's better to think of this thing as two devices that use a common power supply than one integrated unit.

Works great and locks to sat quite fast

Small footprint, very quick fix. In order to use the module with the Arduino, I soldered an angle connector to the holes in front of the socket, see attached photo. Note that the default, out of the box, baud rate for the unit I got was 9600, not the 38400 listed in the product description.