Pre-flight

Complete a full readiness check before flight.

Board configuration

Confirm:

• The intended configuration is loaded.
• FIRE_PYRO_APOGEE has the intended value.
• Expected flight values are reasonable.
• Configuration changes have been tested.

Power

AstroNav Nano recognizes the following intended power ranges:

Source	Voltage
USB	4.5 - 5.5 V
1S LiPo	3.0 - 4.35 V
2S LiPo	6.0 - 8.4 V

Unknown power source

Do not continue if the board reports an unknown power source without understanding why.

Mounting

Make sure:

• The board is mounted securely.
• The intended orientation is correct.
• The sensor area is not obstructed.
• The board can remain still during calibration.

Calibration

After powering the board:

1. Keep the vehicle stationary.
2. Allow calibration to finish.
3. Confirm the board reaches Idle.
4. Check that no critical fault is present.

Calibration

If calibration fails or times out, investigate the cause instead of bypassing it.

Health information

Useful diagnostic fields include:

FAULT_REASON
POWER_MODE
STATE
VIN_VOLTAGE
HEALTHY
IMU_STREAM_OK
BARO_OK
FLASH_FS_OK
CRITICAL

Serial monitor

Serial monitoring uses:

115200 baud

With PlatformIO:

pio device monitor

Hazardous hardware

Resolve critical health conditions before connecting hazardous hardware.

Final readiness

Board readiness is only one part of launch readiness.

Separately inspect:

• Recovery hardware
• Electrical wiring
• Batteries
• Connectors
• Deployment hardware
• Mechanical mounting
• Launch equipment