Raspberry Pis are some of the most popular and accessible single-board computers money can buy. You can use one for anything from building a robot to getting a backup computer for a cheaper price tag.
It’s a sci-fi trope that you can ‘scan for life signs’ and detect if there are humans — or suspiciously human-shaped aliens — present, but in real life it’s harder than that. [The Masked Bear]’s ...
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