The concept works.

So its now time for a print to make it pretty.

I made the first one using the THT parts from the breadboard. Turned out it was waaay too big and thus expensive.

Opted for SMD parts instead slashing the size down to 1/3 and halving the cost to manufacture.

I also added many potentiometers ... i dont trust the simulation and calculation THAT much ....

Now we wait ...