2017-04-13, 08:34 PM
(2017-04-12, 05:14 PM)Sailoog Wrote: Nothing special on normal raspbian boot.
GPIO 22 and 27 are free of use.
Maybe you need enable the serial interface? is disabled by default on OP 0.10.0. Go to menu - Raspberry Pi configuration - interfaces
have you installed the software your hat needs?
thanks for the hint on the serial interface - I had already tried that - but the real culprit was the serial console in /boot/cmdline.txt
After removing it, OP starts normally.
Cheers
Christian