The lights in the periscopes I did just because I think it looks cool lol. In the turret I made a 3d printed hollow route so the light from those actually emits out all the other periscopes at night. I think it makes the tank look sci-fi. I did the same thing with my Leopard 2 but with blue led's. Obviously you would not want light coming out those to stay hidden but it looks cool =P. Optional as well. The periscopes have translucent 3d printed lens's, they have a texture to them though so you might want to cut your own from plexiglass or something.
3d printed stuff in general takes pictures horribly, trust me when I say the tank looks much better in person. The camera even with no flash seems to pick up every single layer line from the pieces. I did virtually no finishing work on this also. They are straight from my printer and painted. So with a little sanding and work it could look much better. Most parts I printed at 0.2mm layer height resolution with 0.4mm nozzle. A couple pieces I printed at 0.1mm height like the wheel details, front headlight mounts, and the turret mount piece.
You can mail the Clark boards back to Taiwan to have them change the sound for you, but I don't think its worth the time really. I basically ended up with 2 Leopard2 boards and used one in this, good enough for me. I seen on the Clark website though you can have them add custom sounds if you order several boards at once... if there is a high enough interest in this I would do that. I know how to create sounds for something like that its what I do for my video game work.
A couple questions I had from you guys, this thing currently uses the 76mm cannon on it. Can that cannon even do ANYTHING to other tanks? I noticed 1 version of the Scorpion was outfitted with a 90mm cannon, but almost every part of the tank is different, hatches, mudflaps, gun mount, turret hatch covers etc. I like the look of the small 76mm gun and overall tank but does it make much sense to be battling with this tank? It could work fine against some of the WWII tanks maybe? I think the Sherman had the same 76mm sized gun on it.
I recorded some video today I will post it later tonight once I get it edited.