Flight Core v2 External Sensors
Table of contents
GPS/Compass
Hardware
Use J10 for standard 6pin style GPS/compass assemblies.
| Pin # | Signal Name |
|---|---|
| 1 | 5VDC (other pins 3.3V, input or output if supplied at another pin) |
| 2 | EXT_GPS_UART_2W_TX |
| 3 | EXT_GPS_UART_2W_RX |
| 4 | EXT_GPS_I2C_SCL |
| 5 | EXT_GPS_I2C_SDA |
| 6 | GND |
Software
See standard PX4 GPS/compass drivers.
External SPI Based Sensors
Hardware
An external SPI bus connected to SPI6 is available on J14
| Pin # | Signal Name |
|---|---|
| 1 | VREG_3V3 |
| 2 | SPI6_MISO_EXPANSION (3P3V) |
| 3 | SPI6_MOSI_EXPANSION (3P3V) |
| 4 | SPI6_SCK_EXPANSION (3P3V) |
| 5 | SPI6_CS_EXPANSION_N (3P3V) |
| 6 | |
| 7 | |
| 8 | |
| 9 | |
| 10 | |
| 11 | |
| 12 | GND |
Software
You can enable the external SPI device to run on startup here as required: boards/modalai/fc-v2/init/rc.board_sensors.
For example, and note the -S is capital to denote external IMU, also not specifying bus with -b X which causes the probe to fail:
# External SPI6 ICM-42688
icm42688p -S -R 12 start