Evolution of my gundam LED head unit

My first LED head unit is on SD grade, which is Red Frame Astray. It is done by not installing the eye part, but use a green transparency for book cover as the eye part and two 3mm LED as the eyes. Batteries used are button cell.

Next LED head unit done is on SD strike freedom. Right pic is the LED unit. Again, 3mm LED is used and there is separate battery compartment. The "eyes" are cut out from the eye part and replaced by transparent plastic (from CD case).

The third LED is done on SD Zaku Gunner, with one 5mm LED as the 5mm LED fit right into the Zaku eye size. Yes, the flexibility to turn the eye is maintained!

The fourth, and the last LED head unit on SD grade is on SD Strike gundam. I was thinking of modding the SD gundams, but getting lazy so until now my SD strike still haven't completed. Only the Head is done. Same thing, two 3mm LED, battery compartment made from plastic sheet for book cover. The "eyes" are cut and replaced by transparent plastic from CD case.

Now, then, onto MG gundams. My first MG LED head unit is on MG Turn A gundam. It uses one 3mm white LED, with 3 button cells (because the LED somehow required higher voltage). As can be seen, the LED unit is removable from the head..

The next one is on MG Zaku 2, Char's counterattack. It has a built in, non-removable LED unit which still maintain the ability for the eye to move around. However, the unit is too fragile and breaks down even when replacing the battery. In addition, it is also hard to replace the battery as a few parts need to be taken apart first. So in the end, abandon the project, and it is considered as a failure. Oh, forgot to mention, got my hand on the surface mount (SMT) LED, which is so small that installing a LED into MG gundam is no longer a problem. The only problem left is the battery.

Next one is on MG RX-78 OYW version. It uses SMT LED and the LED unit is removable. My first LED unit with battery on side by side.

And the latest one is on MG strike freedom. Again, since SMT LED is used, no problem with the LED. As for the battery, manage to find place (with some plastic removed) to fit them. It is a built in, non-removable LED unit, and also my first separate system (battery compartment and LED are on separate parts).

I first started with SD grade is because the head is big and provide sufficient empty space for battery and LED. However, since now I have the SMT LED and able to drill/cut/grind plastic (with Dremel tool), installing LED on MG gundams will be easier than last time, though again not all MG can head canbe installed with LED (e.g. MG RX-78-2, the head is just full of inner frame).