The problem is that miniSD and microSD are not interchangeable. Although microSD is smaller than miniSD and are pin-to-pin compatible, I have not seen any ...
Pin-out information for camcorder audio and video RCA cable.
Some methods of duplicating film from one medium to another, such as duplicate negative, negative to slide, etc.
The last two of them are extremely weak and are about to die. So I've been thinking of alternative power sources, rather than buying more BP-511 battery ...