I have been running Dan’s python OSPi for a couple of years and have modified it to add a rain sensor and display and control the garage door. It has been running fine on:
Linux ospi 3.12.35+ #730 PREEMPT Fri Dec 19 18:31:24 GMT 2014 armv6l GNU/Linux
for months. I just did a raspbian update which will end up booting kernel 3.18.7+ which has Device Tree enabled by default. This upgrade broke my one-wire temperature sensing on another Pi which required a fix to add a line to /boot/config.txt to define the custom pin I use for the one-wire bus. There was also some docs on getting i2c enabled in the new kernel.
I have not rebooted the OSPi system yet, so it is still running under the old kernel. I’d like to know what to expect when I do reboot it. Will it come straight up, or will it have to be fixed?