Compass module: QMC5883L
Baud Rate: 4800bps-115200bps (Default - 115200bps)
Sensitivity: Tracking: -167dBm
Cold start: 26s
Hot start: 1s
Maximum height: 50000m
Maximum speed: 500 m/s
Speed accuracy: 0.05 m/s
Maximum acceleration: ≦ 4G
Refresh Rate: 10 Hz
GPS patch antenna size: 18 x 18 mm
Total dimensions: 20 x 21 x 6.5 mm
Weight: 5.2 g（±0.5g）
Input Voltage: 3.3-5.5 V, current 40mA
GPS pin definition: RX/TX UART
Compass pin definition: SDA/SLA
