thank you for your work on this awesome photo booth! I am trying to build one myself with your instructions. One thing that isn't clear to me is whether you used the 5V+12V power supply to power both, the Raspberry Pi as well as the LED flash. I was wondering whether this was possible in your setup?
Yes, that's the reason that I use this particular power supply. It's nice and compact and provides the power for the Pi and the flash without needing separate power supplies or something chunky like a computer power supply. The Pi does give a low voltage warning (because of the voltage drop caused by the display) but I have had it on for days and didn't encounter any reboots because of it.
George Timmermans, Research Toolmaker, Software Engineer and Tinkerer