First, fetch data via cronjob:
crontab -e, then insert: * * * * * /path/to/happylab.sh
happylab.sh will download files like ausstattung2015-07-11-15-03-01.html
Next, analyze with: php auswertung.php
This assumes, that the html files are in the same directory. As result, you'll get auswertung.json.
To plot graphics feel you have to prepare the data.
python happy.py > happy.txt
Next, plot with gnuplot and you'll get the PNG graphics
Special thanks to Peter Meerwald and Per Östgard