I completed Nxtwallet today. I encountered problems when Nxtwallet transformed by himself (instead of me by remote controlling). I first worked with time controlled automation, but when the battery power lowered the time increased for each step in transforming. So Nxtwallet got stuck when he went to sleep after a busy day. I solved it by using three RCX touch sensors placed in serial. One for each transforming movement. It was quite a challenge to get it in, because space inside is very limited. Now it Works fine and Nxtwallet goes to sleep when he likes it and so do I…
I will try to get a explainary video out before Christmas in which I will release as much building information as possible.