Log Flight Data on SD Card
R2026bCapture and analyze flight data on PX4® hardware. UAV Toolbox Support Package for PX4 Autopilots supports the following logging methods:
ULog Logging — Log PX4 flight data, telemetry, sensor measurements, actuator outputs, and system status information.
MDF Logging — Log internal Simulink® signals to MDF (
.mf4) files for post-flight analysis in MATLAB®. MDF logging is an efficient alternative to MAT-file logging. For more information on MAT-file logging, see Log Signals on an SD Card.
Topics
- MDF File Logging on PX4 Autopilots
Log Simulink signals to MDF (.mf4) files on PX4 autopilots using industry-standard Measurement Data Format.
- Choose a Data Logging Format for PX4 Autopilots
Compare uLog and MDF logging formats to determine the best approach for your PX4 data logging workflow.
Troubleshooting
Troubleshooting Memory Limitations for MAT-file Logging
Solve the memory overflow issues while logging signals on SD card.
Troubleshooting Dataset Format Usage for MAT-file Logging
Solve dataset format issues while logging signals on SD card.
Featured Examples
MAT-file Logging on SD Card for PX4 Autopilots
Efficiently log signals in the MAT-file format from a Simulink® model running on a Pixhawk® hardware, and retrieve the log files from the SD card for further analysis.
Log Simulink Signals Using PX4 ULog
Log signals in ULog format from a Simulink® model running on a Pixhawk® hardware and retrieve the log files from the SD card for further analysis.
MDF File Logging on SD Card for PX4 Autopilots
Use the UAV Toolbox Support Package for PX4 Autopilots to log signals from a Simulink® model to an MDF file on an SD card mounted on the PX4® autopilot. After the model runs on the target hardware, you can retrieve the logged MDF file and analyze the data in MATLAB® or Simulink®.
