I am living in a housing complex where we have the mailbox at the entrance. So I would like get a notification when I get mail. The problem is that I have no power available, i.e it needs to run on battery… and that there are 4 mailboxes with a common lid that the mailman opens, so it hard for me to use a door sensor since this will trigger when the mailman has been there no matter which of the 4 mailboxes he filled up!
So I am thinking about using a wifi camera instead that could make a snapshot every day at 14.00 then send the image to a script that check if there is a change in pixels since yesterday and if it so then send me an email with picture attached. Is this feasible, and if so which camera to get and how to implement it?