Video link: <a target="_blank" rel="noopener noreferrer" href="https://youtu.be/AGLxJhTsrNU">https://youtu.be/AGLxJhTsrNU</a> <br>Home made, hardware hacked front building door. Making them smart using raspberry pi 2 b+, 2channel relay, wifi dongle, door intercom, php and python... Source code and more info soon :)