I have all of a silly home project functional except for one piece of the puzzle. I'm over-building a remote doorbell for fun for our house. On the back patio, we can never hear the doorbell ring inside the house when guests come over, so I wanted to overdo it by putting a cool 6" brass bell on the back patio wall with a solenoid inside that would ding the bell when the doorbell was run. At first I was just going to hack apart an off-the-shelf setup, but that's just not as fun as using parts I have lying around.
I have set up two Xbee radios to do the wireless part. Works great. Simple. Not so cheap, but simple and they were available on my bench. I'm an AVR fan, so I used a couple of ATtiny24's I had sitting in the drawer for each end to make sure the communications was reliable and that the brass bell doesn't just randomly fire at all hours of the night. 
The part that I'm theorizing about is the sensor for the doorbell. I don't want to hack apart the actual button. Space is limited and I want the front door area to not look like the entrance to a mad scientist's lair. I'd like to do something more non-intrusive, like a current sensor. I want to use one of these to sense the current on the solenoid lines for the actual doorbell on the wall inside the house:
Does anyone who knows more about this amazing world of electronics fun (unlike me, the hobbyist hacker) know if this is a reasonable solution or if it would work well at all? It seems really cool to do it this way. It would also be kosher with my wife, whose only rule for me on this project (aside from the usual, "Don't burn down the house.") was (paraphrasing): "Do not destroy our doorbell."
Recommendations or suggestions or a, "sure, that should do the trick" would be greatly appreciated!
Andy
