Improve buzz feedback #10
Description
Players have explicitely expressed the need to get a better buzz feedback to let them know if they have the right to answer.
This better feedback can be implemented in different ways:
- using the 12V led setup in the existing button (but there is currently no 12V source in the buzzer. It would need a boost circuit, and the corresponding power consumption addition)
- adding a small led on the buzzer casing
- adding a small screen on the buzzer
For any candidate solution, we must take care of preserving the power consumption (a button must be powered for around 4 hours on the battery)