Hi LittleBlueThing,

thanks for the link but guess where i have the blue buttons from?
No harm meant!

I have two blue button sets here and would prefer the interchange if possible.
On top of this 55 USD (incl. shipping) is imho to expensive for a little PCB and
a bunch of SMD LEDs and resistors which cost not more than 10 Euros in the electronic shop.
Maybe i get it cheaper from a forum user.

Best regards,
Andres