Config File Diff Viewer

If your aircraft has two or more configuration files uploaded, you can compare them side-by-side to see exactly what settings changed between versions. This is especially useful for tracking PID adjustments, filter tuning, or other parameter changes.

How to open the diff viewer

Step 1: Check the prerequisite

The diff viewer is only available if your UAV has at least 2 config files. If you have fewer than 2, upload another config first (see Configuration Files).

Step 2: Select two files

A blue info bar appears at the top of the Configuration Files section showing "Select 2 files to compare (0/2)". Each config file in the list below now has a checkbox to its left. Check the boxes next to the two files you want to compare. Once you've selected 2 files:

• The counter updates: "Select 2 files to compare (2/2)"
• All other checkboxes become disabled (grayed out) to prevent further selections
• A blue Compare button appears on the right side of the info bar

Step 3: Open the modal

Click the Compare button. A full-screen modal opens with the diff viewer displaying both files side-by-side.

Understanding the diff viewer

Layout

• Left pane — First selected file (header shows filename)
• Right pane — Second selected file (header shows filename)
• Both panes are scrollable independently; scroll to compare different sections

Color coding

• Red background — Line removed (present in left file only). Marked with a − in the gutter.
• Green background — Line added (present in right file only). Marked with a + in the gutter.
• Gray/neutral background — Unchanged line. Shows the line number in the gutter.

Special cases

• Files are identical: If the two files have no differences, a centered message displays: "Files are identical". You may have selected the same file twice or files with matching content.
• Error loading: If there's an error retrieving the files (e.g., network issue), an error message appears. Check your connection and try again.
• Loading state: A spinner appears while the diff is being computed.

Navigation and closing

• Click the × button (top-right) to close the viewer.
• Closing the viewer automatically clears your file selection (the checkboxes return to unchecked, and the counter resets to "0/2").

Examples and use cases

Scenario 1: PID tuning

You have "PID_conservative" and "PID_race" configs. Upload both, then compare them to see which parameters differ between the conservative and aggressive tunes. This helps you understand the effects of each change.

Scenario 2: Before/after filter adjustment

Before adjusting gyro or D-term filters, save your current config as "baseline". After tuning, upload the new config and compare it to the baseline. The diff shows exactly which filter values you modified.

Scenario 3: Tracking firmware updates

If your flight controller firmware was updated and you re-exported your config, compare the old and new versions to see if any parameters were reset or changed by the firmware upgrade.