As the Due is realeased many of my problems have been solved. I could use one processor where I used several before.
Testing with the Arduino DUE Board is fine, but where can I get the CPU to place them in my gadgets?
I was using several Unos (Atmega328) before, now I want to swap to the 32bit platform.
I found a 32-bit CORTEX-M3 Chip at my local dealer (Reichelt) which is a STM32 from ST-Electronics. Can I use them with the Arduino Software?