I wouldn't say stupid, but I bought a lot of ESP32 microcontrollers, Raspberry PIs (quite a few pi zeros and pi 4s) and solar panels. If civilization is going to collapse, having some low-power computing devices around would be powerful.
Makes a lot of sense. You remind me of the film "Testament". I think it's an old made-for-tv, really well made film about a nuclear blast. It was made right before pc's became ubiquitous and the only communication device left that worked was a ham radio.
Microcontrollers are great. If ever things collapse, power efficiency will be central. I wonder whether there are IDEs that run on smartphones...
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