Data Logging

The RF Source in its current version saves data that can be used for analysis. This section is intended to help in locating and understanding their purposes.

First, all files should follow the same format:

YYMMDD_hhmmss_<datafile>.txt

where YYYYMMDD_hhmmss is the date and time of the file when it was created in UTC, and <datafile> is the filename indicating its purpose.

Data files that are currently created are:

1. time/timeset: Saves all the outputs of the procedure of synchronizing the RaspberryPi time with the GPS/PPS module. 

   • time is the name of the file before synchronizing and timeset after finishing the process. Normally, timeset is the only version that should be found in the folder, but whenever the time can't be set or the GPS module is not connected, the former file should be found.

2. rfmeasure: Saves data measured by the Arduino/ESP32' ADC and the output voltage to control the power of the VDI Multiplier through the DAC.

3. weather: Saves data measured from the BME280 weather sensor module: Temperature, humidity, pressure, altitude (based on pressure).

4. camera: Saves the time when the LEDs for the camera blink. This is used for synchronizating the video with the system time.

5. inclinometer: Saves data from the BNO055 module: orientation, angular velocity, linear acceleration, magnetometer, accelerometer and gravity data.

6. telemetry: Saves data from the gimbal outputted through the drone SDK.

Video

For the videos recorded by the Sony Camera, it is convenient to convert the filenames to a format that is easier to match with the rest of the files.

You can run python video_rename.py <videofile path> to convert the filename of the camera to:

<originalfilename>.MP4 -> YYYYMMDD_hhmmss_<originalfilename>.MP4 

If you have multiple videos, you can also run in the server, the following command: