Dome electronics

Of course the dome must have some lights and sound.
Therefore i bought some led's in the right colours. And Ian had a small box with additional led' in different colours and sizes, too.
Here is the dome with a look in side...

On the Internet i bought some battery boxes (with on/off switches integrated) for 3 and four 1,5 v Batterie. So i can usd the soldered electronics and the single led's. They run on 4,5 v and 6 v.