In article , Java Jive
wrote:

There is in my wider family's safekeeping, but which rightfully belongs
to me, a very beautiful antique book, which because of an unforeseen
horrendous problem I've decided must be sold to fund my house
renovations, but, beforehand, I'd like to photograph the hand-painted
pictures that it contains. I had considered scanning it, but it's too
big, so some of the images would need to be scanned piecemeal, and I'm
worried that the book might not survive such rough handling as to be
perched on a scanner.

So I've decided to try and photograph it using my tablet. I'll
construct some sort of frame to hold the tablet securely a suitable
height over the book, and try and find a suitable source of
illumination. The need therefore is a way of controlling the tablet's
camera from a PC, either via WiFi, Bluetooth, or USB cable.

for the best results, don't use a tablet. use an slr and a copy stand
or better yet, have it scanned by a professional lab who specializes in
such things, who will have a scanner that's both big enough and
designed for books which won't damage it.

but if you're committed to doing it yourself with a tablet, just take
the photos of each page using the tablet without involving the computer
at all, then after everything has been copied, connect the tablet to
the computer and copy all of the photos.