One last thing I will probably integrate is a tunable damping factor for the indicator.

The system produce about 600 values/second... I'm computing a first order estimate of the present AoA value based on the x preceding values, this is scientifically more accurate than a simple average and doesn't overload the cpu... Presently my setup is based on 10 values which makes the indicator quite reactive, but it is quite easy to program the software to have this adjustable.

3 positions should be sufficient, but we have 5 leds... So I plan to make tests and see what could be the suitable range. One short pulse on the button will let you choose the damping factor with the rotary knob...

Maybe one reason to keep it on the panel... Or not. It is plugged with a miniature connector on the PCB, so you can also simply use it for calibration, light intensity and damping factor tuning, and unplug it once you're happy... It will ship with a long cable.

PCB & hardware ordered...