| 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/GoogleDrive-sritchie09@gmail.com/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/GoogleDrive-sritchie09@gmail.com/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/GoogleDrive-sritchie09@gmail.com/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
