Echo Dot Activate trigger bracket

I wanted a way to get a trigger from the Dot as soon as the Activation word is said before the rest of any command.

I then use the trigger to turn down volume / mute of any external device so that the rest of the command is recognised more accurately. I find that having TV on normally means I have to say commands quite loudly to make them reliable. The activation word (Alexa) is normally picked up more easily.

The method I use is to use a Light dependent resistor picking up part of the Dot