I would like to ask you for advise on which approach should I use and what would be the required parts for the endeavour.
My office is only 3 streets away from my house. Anyway I'm not full time at the office, but at the same time I don't want to leave the office completely unattended.
The sollution to my problem would be having something that would:
1) At least, send me a notification when someone rings the main door bell so that I can "move my ass" there and find out who rung the bell and what he wants.
2) If it's possible, and I know this will be way more complex, establish a full duplex audio communication between the person using the intercom (in my office) and me (I could be in my house, or other place). Because sometimes it's just
- INFO The intercom only has audio.
[u]What I've thought so far[/u] To establish the link between the two places: Ethernet Shield (DSL connection in both ends) or GSM Shield