Tech Update - Leds and better CPU

After numerous testing and further trials, we've come to the conclusion that we need a stronger CPU in order to make the audio processing faster. That is why we switched from a Raspberry pi Zero to a 3b model.

Besides that, another upgrade we did was adding a feature of a LED ring around the prototype, that responses according to the mod the user is currently at while playing:

1. While recording, the ring will gradually light up, according to the time passing/remaining.

2. While processing the video, a nice 'waiting' gesture will light up across the whole ring.

3. While playing the edited version of the recording, the lights will all switch on and change color according to the plate spinning by the user.