Configuration

AstroNav Nano stores its main user configuration in Settings.ini.

Settings.ini

Connect the board through USB and open:

Settings.ini

Normal configuration values are stored under:

[settings]

Configuration scope

Only edit values in this section unless you specifically know why another section needs to be inspected.

Available settings

Setting	Description	Default
ESTIMATED_HEIGHT_M	Expected apogee height in metres	120.0
HEIGHT_MARGIN_M	Allowed height tolerance around the estimate	20.0
ESTIMATED_SPEED_MPS	Expected climb speed in metres per second	35.0
SPEED_MARGIN_MPS	Allowed speed tolerance around the estimate	8.0
LAUNCH_THRESHOLD_G	Acceleration threshold used for launch detection	1.35
FIRE_PYRO_APOGEE	Enables or disables automatic apogee pyro output	TRUE

Recommended configuration workflow

For a new board:

1. Start with the default values.
2. Change only settings you understand.
3. Save Settings.ini.
4. Safely eject the AstroNav Nano drive.
5. Reconnect the board.
6. Open Settings.ini again.
7. Confirm that your settings were saved.

FIRE_PYRO_APOGEE

Automatic apogee deployment

To allow automatic apogee deployment:

FIRE_PYRO_APOGEE=TRUE

Detection-only testing

To detect and log apogee without automatically activating the pyro output:

FIRE_PYRO_APOGEE=FALSE

This is useful for detection and sensor testing.

Physical disconnection

Disabling automatic firing in software is not a replacement for physically disconnecting hazardous hardware.

Other sections

[debug]

Contains diagnostic information generated by the firmware.

Generated diagnostics

Do not normally edit this section.

[checks]

Contains health-check information generated by the firmware.

Do not normally edit this section.

[profile]

Contains device identity and stored flight information.

AstroNav MC

AstroNav MC provides a graphical interface for working with AstroNav Nano.

It can be used for:

• Editing settings
• Reading flight logs
• Viewing flight summaries
• Simulating mission behavior
• Validating configurations

AstroNav MC complements the onboard firmware.

It does not replace onboard safety logic or physical flight-readiness checks.