Done some extensive testing of the door opener the last couple of days. And it works fine. Here is an action photo of it, all covered in snow but still doing its duty.

The hardware is my own take on the arduino, witch I dubbed the sketchyduino in an older post. The firmware is loosely based on Robert Carlsens work.

I'll happily write more details of this work, or other projects of this sort if you want me to. Just shout out in the comments!