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Apr 4, 2019 at 8:11 comment added States @CortAmmon Unfortunately, i have found no supplier-provided retention periods mentioned, but, based on the technologies used and the data density of the chips, I would say the Arduino have a longer shelf-life than SD-cards. The higher the data density on a chip, the smaller the 'memory cells' and the higher the risk of damage.
Apr 1, 2019 at 15:03 comment added Cort Ammon @States True. I bet that, were we to know how the information was intended to be used, that we'd find your approach is likely very effective. One thing I don't know is the powered-off lifespan comparison between SD cards and Arduinos. Might the Arduinos die first?
Apr 1, 2019 at 11:34 comment added States You could bring Arduinos or similar to read from the micro-sd cards (with a display and even a serial thermal printer to print out longer portions). Arduinos are a lot more resilient to fluctuating power than computers. One can bring a bunch of pre-programmed boards, and spares for displays and printers (maybe lots of paper too).
Mar 31, 2019 at 21:32 comment added Criticizing Israel not allowed And you need a reason that the SD cards are easier to use than paper.
Mar 31, 2019 at 21:05 comment added Dan Mills You would need stable power, and maybe some way to debounce the clock and data switches, also a good supply of frogs for the galvos. Were I doing it I would probably design something bespoke rather then going SD with a small solar panel and pile of flash chips embedded in epoxy with an led and touch switch, then teach everyone who needs to drive the thing morse code. No IO, no mechanical interfaces, put it in the sunlight and tap out queries. Dress the thing up right (and make the interface default to Latin) and you can probably get the local religious order to manage it for you.
Mar 31, 2019 at 18:30 comment added cmaster - reinstate monica Good point about SPI!
Mar 31, 2019 at 17:43 history answered Cort Ammon CC BY-SA 4.0