Door controll system. Keys used is iButton.
When door is opended or someone tried to open the door, this is sent to a mqtt server.
Time is stored in the RTC DS1307 and for timesync I use QuickDate (https://github.com/jsiei97/QuickDate) on a local webserver.
Please note that to build this project you need a filesystem on your PC that supports symbolic links, more or less you need a Linux based OS.