MicroSpiro, powered by Arduino

I built this earlier and have decided to name it "MicroSpiro". It's constructed almost entirely out of scrap materials so it's not the best looking but it is exceptionally small, the working components fit onto a space about 2cm x 4cm. The majority of the spare cardboard is just to help me align the laser pointer easier, I might make it more compact and attach onto the end of the pointer later on.

Here's a size comparison first, along with the arduino that controls it:



This is how the laser is aimed into the reflectors



And some action pictures





Thanks for looking