I kept an eye on RPiLocator when I was getting my home assistant setup going. It took a couple of weeks for one to come into stock (UK) but I got one in the end.

@mattileh I gt exactly the same error as @dmd. When I run bleAdvWebSocket.py manually I get the following:

pi@mirror-pi:~/MagicMirror/modules/MMM-SensorGateway/gateway $ python bleAdvWebSocket.py 
Traceback (most recent call last):
  File "bleAdvWebSocket.py", line 13, in module
    import websocket
ImportError: No module named websocket