The aluminium housing will draw (and hold) the cold won't it?
I guess if the Raspberry Pi emits enough warmth it will counteract the cold.
There's always a Peltier cooler used on the reverse side but it would likely steam the glass up. I think last time I played with one I may have burnt my finger on the hot side.
Still, the domes look amazing and I can only imagine how much work went into making them.
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