Downloading Logs¶

Log data is downloaded from the OnSpeed controller via WiFi.

Via WiFi Web Interface¶

Connect to OnSpeed WiFi (OnSpeed / angleofattack)
Navigate to http://192.168.0.1/logs
The page lists each log with start time, duration, max IAS, max pressure altitude, and size
Click a filename to download it

The metadata columns come from a small .meta sidecar file written next to each log_NNN.csv when the log closes. Older logs without a sidecar render with em-dashes for the metadata columns but still download and delete normally.

Logging pauses during download

SD card logging is temporarily paused while a file is being downloaded to prevent conflicts. It resumes automatically after the download completes.

Download Speed¶

WiFi transfers are not fast — the ESP32's WiFi bandwidth is limited. A large log file (50–100 MB) may take several minutes to download. Stay close to the controller for the best signal.

Managing Logs¶

Deleting Logs¶

Via the web interface:

Navigate to /logs
Click the trash icon next to a single log to delete it, or check several rows and click Delete selected to remove them in one pass. Either action shows a confirmation page before files are removed. The log currently being written is protected from deletion.
Deleting a log also removes its .meta sidecar.

Via console:

LIST            # See all files
DELETE log_001.csv  # Delete a specific file

Formatting the SD Card¶

To erase all data and start fresh:

Via web interface: /format
Via console: FORMAT

FORMAT deletes everything

This permanently erases all log files and configuration on the SD card.