The final results
After only a few hours the result is like the image below. I chose not to close the box because it has clear ventilation openings in it and I did not want to close them. I tested all voltages with a voltage meter and they are all okay. So from now on, I always have power available when I need it.

The Final result
Probably I will use +12 and +5 most of the time. But for whatever project I will do, I can make many voltages now. By combining +5 and -5 I can make 10V and +3.3 and -12 makes 15.5V… Only the Amps from these negative voltages are not really high.
