After some rework it is now working. There was also something wrong with the 0201 Capacitors. They are the load capacitors for the crystal. Maybe just the value was wrong. But it also works without them, so I did no further investigation yet.

The missing red LEDs on the picture are because the one red column is not connected. This is because the IO pin is shared with MOSI. To activate them I have to bridge a jumper and this is not done.

Next will be to add some annimations or adding a controll interface.