There were a number of hardware issues with Arduino at cryogenic temperatures: capacitors loose most of their capacitance, brown-out detection was tripping, 3.3V linear regulator for LCD backlight supply was failing.
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There were a number of hardware issues with Arduino at cryogenic temperatures: capacitors loose most of their capacitance, brown-out detection was tripping, 3.3V linear regulator for LCD backlight supply was failing.