Our company use a fail safe electric bolt with a remote control for the entry door. It closes when the power is ON and vice versa.
It does work normally but I want to make a hot button for the receptionist to open/close it using her keyboard.
I'm a newbie in electrical and after spending a half day for googling I have found 2 way that I feel it may work:
- Connect the receptionist's PC directly with the door controller through computer port (USB/Serial).
- Use an ethernet relay.
Honestly, I have searched a lot but still found nothing fit my need. I want to solder the circuit myself so buying a complete controller is not in the category.
Btw, I intend to make the application using .NET framework (C#).
Any help would be appreciated!
P/S: Sorry for my English if you do not understand.