The LED for the eye is soldered onto some Veroboard and mounted inside the eye with two screws.   This is a three colour RGW 1W LED but I’ve only wired out the Green and Blue. I’m planning to go with about twice as much blue as green for a cyan colour. I need to dim the light when I’m pointing it straight at the camera, the hotspot isn’t visible to the naked eye.  

I had a bit of a play with getting the eye pivot sorted now that I have a better idea what Im doing with it.   The slot in the head sits at almost exactly 45 degrees, so I measure up and re-cut the aluminium, test mounted the larger servo and disc       Dimensions seemed OK so cut both sides and riveted bases for stability.   Sits well on the head base I think   Sat the dome on to check how much the disc protrudes     It will need some final lining up and finishing, but I think Im OK with this part now.   So I connected up the RC receiver and controller   and did a test.   IMG_0251.mov       The larger motor will need a bigger controller now (its pushing maximum current), so I'll get one on order.   Im also going to run a small 12v computer fan to draw in and circulate air under the dome.