Hi, bit of a noob, so I apologize if this has been asked an answered.
I've got a raspberry pi and found some software to let me do things like, detect bluetooth devices, get the RSSI/signal strength etc., but I'm more interested in doing something like this with an Arduino since there's more overhead with the pi.
Basically, I want to be able to detect when a certain device is in range and/or what the signal strength of said device (say an iphone) is and make a rough approximation of the distance (not really that important yet). At some distance/strength, have it trigger some thing to do a thing etc.
I got a BLE Shield from RedBearLab (v2.1) but it looks like this isn't what I wanted for my needs, but I'm also having a hard time finding one that is and code to go with it.
What would be the best shield (I've got an Uno R3 - though am not opposed to switching to something else) to use for this - or some other option? Obviously I'd have to do some hard coding for various device ID's, but that can be addressed later.