Updated: May 11, 2021
Data Logger is a simple Python script running on the Raspberry Pi FDR unit. The script reads data from the SQLite database every five seconds (configurable) and writes it into the text file (.csv) for analysis in Excel or similar applications.
A new .csv file created at the first startup of the day.
The file name looks like this fdr_2019-08-04.csv
It is recommended to cleanup the folder where the system creates the files (~/fdr_data/) from time to time to ensure the SD card has some free disk space. In the future versions an auto-cleanup functionality will be implemented.
You can download the most recent source code from GitHub:
Assuming you already have Python installed, please open the terminal window and perform the following steps:
Create the FDR folder in your home directory
cd ~ mkdir fdr cd fdr
Download the fdr.py script and place it to the the folder you have just created
Create a folder for the data files
cd ~ mkdir fdr_data
Configure the fdr.py script to start automatically
Create a config file:
sudo nano /etc/systemd/system/FDR.service
Copy-paste the following text into the file:
[Unit] Description=Get Flight Data Recorder service running at boot After=CAN_Listener.service [Service] ExecStart=/usr/bin/python3 /home/pi/fdr/fdr.py Restart=always RestartSec=3 StandardOutput=syslog StandardError=syslog SyslogIdentifier=FDR User=pi Group=pi [Install] WantedBy=multi-user.target
Enable the service:
sudo systemctl enable FDR.service
Start the service:
sudo systemctl start FDR.service
Check the status:
systemctl status FDR.service