Starting the controller ----------------------- sudo /etc/init.d/gaggia start Stopping the controller ----------------------- The halt button should be pushed to provide an opportunity for the PI to shutdown before removing mains power. sudo /etc/init.d/gaggia stop Configuration files ------------------- /etc/gaggia.conf Data files ---------- Data is recorded to: /var/log/gaggia/ Each run results in a new CSV (Comma Separated Values) file which is named with the start date and time as follows: YYMMDD-HHMM.csv There is no upper limit on the number or size of these files, so they need to be cleaned up manually. The files are fairly small (even if the machine is left on for a couple of hours, the file would only be around 180kb).