Heh, few years ago I built myself a RPi Zero based camera. I wonder how have they made the boot up fast enough to not be annoying. I used non-real time eInk d

Heh, few years ago I built myself a RPi Zero based camera. I wonder how have they made the boot up fast enough to not be annoying. I used non-real time eInk display to cut down on the battery life so I could just keep it on in my pocket while out taking pictures since it took good minute to get ready from cold boot.