[Android Apps and Games] mstevens:
In my opinion, the simplest (but not necessarily the best) way to do what you specify would be to trigger based on "not in car mode". This would require that you have a car charger that toggles car mode, though. That probably means the manufacturer's special (overpriced, oversized) car dock. You probably don't want to buy one of those, but if you have one, you're set. Create a new Event; add a Condition: Car Mode - Not in Car Mode; add an Action: Bluetooth - Bluetooth Off.

Turning Bluetooth off automatically makes the most sense if it's also turned on automatically when you get in the car. This would also be very easy if your car dock triggers car mode. Create a new Event; add a Condition: Car Mode - In Car Mode; add an Action: Bluetooth - Bluetooth On.

Do you really need it to turn off Bluetooth specifically when you unplug the

car

charger, though? Would it be OK to have Bluetooth off any time you unplug

any

charger and go on battery? That would be very easy and not depend on the type of charger. Create a new Event; add a Condition: Charging or Unplugged - Using Battery; add an Action: Bluetooth - Bluetooth Off. This would mean it would also turn off when you unplug the phone from the charger in your house or office, but then you could have it turn back on when you connect a charger (such as in the car). Create a new Event; add a Condition: Charging or Unplugged - Charging from USB or AC; add an Action: Bluetooth - Bluetooth On.

Another option would be to trigger not based on unplugging from the car charger but on disconnecting from Bluetooth when you turn off your car. Create a new Event; add a Condition: Bluetooth Device Disconnected - (select the connection from the list); add an Action: Bluetooth - Bluetooth Off. This will work if you connect to the car's Bluetooth, but obviously not for an earpiece. (There's no way to turn on Bluetooth based on the presence of a Bluetooth device since with the radio off it can't detect that.)

If you really do want your Bluetooth on if and only if you're connected to your car charger and you don't have the fancy car dock, you'll need to set up events based on locations and charging state. You'll probably want to set it up to turn Bluetooth off when on battery and to turn Bluetooth on when charging and not in the cell your house or office is in. Without the location specifier, Bluetooth would turn on when you went on charger at the house or office charger (though it's hard to see what that would hurt).

Bluetooth is one of the main reasons I bought Llama. (Another is WiFi.) My phone eats battery on Bluetooth, but I have great Bluetooth built in to my car. I like to keep my phone in my pocket and usually don't plug in a car charger or charge at the office. I can never remember to toggle Bluetooth manually. My house has an Airave but is not in a real cell. My office has 5 cells that can be received depending upon conditions, which potentially covers the whole town. Complicated enough?

Here's how I have Events set up so Bluetooth is off when I'm at home or work with my phone in my pocket but on if it's on a charger or out and about*:

When charging, enable Bluetooth.

When not at Home, enable Bluetooth. (Since I never remember to toggle Bluetooth manually, my best solution is to have it default to "on" when I might be driving, even if I'm actually walking around.)

When battery goes below 20% and not on a charger, disable Bluetooth.

When I'm at Home (as defined by my Airave cell), disable Bluetooth if it's not connected. (Off to save power if the phone's in my pocket at home, but leave it on if I'm using a headset or some other device).

When at Work on normal work days during normal work hours, disable Bluetooth if not connected. (Without the days and times I'd have to remember to switch on Bluetooth when I head for the car after work or if I'm in town for non-work-related reasons; outside of those times, it doesn't care if I'm at Work. Without the "not connected" part, Bluetooth would turn off the instant of the start time, even if I were still in the car. I actually have the start time set for an hour before I usually leave the house, which effectively ensures Bluetooth will turn off when and only when I switch off my ignition after arriving for work).

When I have a calendar event with "Meeting" or "Appointment" in the title, disable Bluetooth if not connected. (I'd like to conserve battery during times that there's a high likelihood that I won't be driving but want Bluetooth on if I'm actually in the car at the appointed time).

*most of these Events do

lots

of other things, too, such as change WiFi and volumes. I've just removed anything unrelated to Bluetooth for the purpose of this post.