Next thing on the list is soldering some components for testing the whole thing and after that ordering the parts for 1-2 complete PCB's.
With this PCB it is possible to drive 12 devices from the Arduino, both digital and analog (PWM) and drive 5 and 12 volt devices by setting a jumper.
Only 1 small flaw: the printing od the LED is not correct, the flat side must go on the other side. Beside that it is working, now need to order some more parts.