On 08/03/2019 21:18, Paul wrote:

Based on my experience with doing stuff like this, I find
you need "immediate feedback" of what is going on.

Yes, but that's what I'm hoping to get by linking the tablet to a PC -
the ideal would be to set up the book and the frame holding the tablet,
and a PC nearby. When each page is ready, I press a key on the PC and
the tablet takes the picture and sends it directly to the PC, where I
examine it for problems before turning the page to the next.

Thanks for your other remarks.