dynon-config-update

name	dynon-config-update
description	File new Dynon config downloads, diff against previous versions, update GDrive links and documentation

Dynon Config Update

Use when the user says they've downloaded new configs, pulled configs from a Dynon display, or needs to file Dynon .sfg/.dfg files.

File Naming Convention

YYYY-MM-DD-N720AK-SN{serial}-{version}-{TYPE}.{ext}

• SN11668 = HDX1100 (pilot PFD)
• SN11672 = HDX1100 (copilot PFD)
• SN10980 = HDX800 (center MFD)

Serial-to-position mapping confirmed from the 2025-11-18 avionics-log install entry.

• .sfg = SENSOR_CONFIG (sensor definitions, transfer functions, min/max)
• .dfg = USER_CONFIG (display ranges, color bands, alarms, widget layout)

Contact alarm text indicators: controlled by range_name fields in USER_CONFIG.dfg. Setting range_name= (empty string) removes the text overlay while keeping the color indicator — e.g. LDOOR/RDOOR have empty range names (no text), while PHEAT has range1_name=ON and range2_name=OFF (shows text).

Workflow

1. Identify Downloads

Find the new config files (typically in ~/Downloads/). Confirm serial number and firmware version from the filename.

2. Diff Against Previous

Compare the new .sfg and .dfg against the most recent versions in GDrive:

~/Library/CloudStorage/[e-mail]/My Drive/N720AK/Public/Configs/Dynon/

Use diff to identify what changed. Report changes to the user — especially any sensor definition changes (min_val, max_val, transfer functions, new sensors).

3. Copy to GDrive

Copy both files to the GDrive Dynon config folder (source of truth):

cp ~/Downloads/YYYY-MM-DD-*.sfg ~/Downloads/YYYY-MM-DD-*.dfg \
  ~/Library/CloudStorage/[e-mail]/My\ Drive/N720AK/Public/Configs/Dynon/

4. Extract GDrive File IDs

Wait for GDrive to sync, then extract file IDs:

xattr -p com.google.drivefs.item-id#S "/path/to/file"

URL format: https://drive.google.com/file/d/{ID}/view

If IDs aren't available yet, add "pending GDrive sync" rows and remind the user to update later.

5. Update docs/gdrive-links.md

Add new rows to the Configs → Dynon table with the date, description (include serial/display name), and GDrive link.

6. Update Memory

Update reference_dynon_sensor_config.md in the claude-home memory system:

• Change "Latest as of" date
• Document any sensor definition changes

7. Document Sensor Changes

If sensor definitions changed in the .sfg:

• Update sections/sys-42-avionics.md (EMS Sensors table, MAP Blanking section)
• Update CLAUDE.md if MAP or fuel pressure sensor details changed
• Update .claude/skills/flight-data-analysis/SKILL.md if blanking thresholds changed

8. Log in avionics-log.tsv

Add entry to ~/Library/CloudStorage/[e-mail]/My Drive/N720AK/Private/Maintenance/avionics-log.tsv for any sensor definition modifications. Format: tab-separated, date in YYYY-MM-DD, performed by "Sam Ritchie (Repairman 5256450)".

9. Remind User

If sensor definitions were modified in the .sfg, remind the user:

• The updated .sfg must be loaded back onto the Dynon display via USB to take effect
• Only the display matching the serial number needs the update
• The .dfg (display config) is separate and may also need to be loaded if changed