A double-conversion superheterodyne transceiver seemed like a sufficiently complicated device with which to explore control panel modeling as an online museum exhibit. Here are the trials and errors from our experience.
# October 1
Shot a just-good-enough photo with my phone. So much better is possible but so far every panel we've captured is of similar quality. The worst distortion comes from shooting at an angle to avoid reflections.
I made copies of the photo with control groups emphasized using Apple Preview Tools. Annotate >> Mask offered just barely visible emphasis to each group. I hoped that flipping between images might bring out the emphasis but it is still too weak to be useful.
Idea: I wonder if a custom panel photo plugin could fix the keystone distortion and provide hover enabled control group emphasis with onclick hyperlinking. npm 
I made a template that included an html img easily edited for each annotated image and added to that a graph that I hoped would become a block diagram of the radio.
I started making pages and pretty soon realized that I would be better off with a site for just this radio. That will be a better model for serious exhibits. Page delete was handy for completing the move and correcting the spelling of transceiver.
The panels subdomain didn't resolve until I added a wildcard for this specific site since had been moved before without one.