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2Gkashmiri | karma 2691 | avg karma 1.01 · 2023-08-15 09:03:10

Why not use a pi zero if you have it at hand?

matthewfelgate | karma 381 | avg karma 0.68 · 2023-08-15 10:08:20

Then you might be able to do two way audio and video so you can speak to the person at the front door remotely.

adolph | karma 7648 | avg karma 1.58 · 2023-08-15 10:12:49

An MCU uses less power, is faster to start from a quiescent state and typically is lower cost than hardware intended to support a full operating system.

That said, there are some who flash Pi Zeroes as "bare metal" or no operating system:

https://github.com/dwelch67/raspberrypi-zero

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