So I tried exactly the same experiment tonight, except that I didn't draw the circle again (+ I didn't write down the 4 outcomes which might have an impact too), and the outcome was "exploring". Unfortunately, nothing special happened. I can't remember any dreams, though I'm quite sure that I could remember 2 different dreams at some point when I was awake during the night/morning, must have forgotten them :/ (I woke up once because our cat came into my room meowing, which happens about once every night).
I will try again tonight, though I will modify the experiment a little bit. At least I will use another pendulum, since my subconscious doesn't really seem to associate headphones with lucid dreams lol.

I also have another two questions:
a) How much do you move your arm when you try to imprint the 4 movements into your subconscious, and how much when you move it unconsciously? For me it was very very little (about 1-3mm) for both cases.
b) As you come from Sweden, I guess your mother tongue's Swedish. Which language did you formulate the auto-suggestions in? The first time I did in English because almost everything I read about lucid dreaming is written in English, and the second time I did in Swiss German because that's my mother tongue. Obviously, the English one yielded better results, but that might also have been a coincidence.

I find this method pretty interesting, hopefully more people will try it out soon and post their results here