this post was submitted on 26 Jul 2024
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218
Researchers discover battery-free technology which harvests power from radio and Wi-Fi signals for low-powered devices (www.tomshardware.com)
submitted 3 months ago by schizoidman@lemmy.ml to c/technology@lemmy.world
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cross-posted from: https://lemmy.ml/post/18426215

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[–] astrsk@kbin.run 7 points 3 months ago (3 children)

This would be neat for a bunch of passive IoT buttons. No need for a piezo to generate power, good for a couple presses at a time, just simple stuff like that.

[–] billwashere@lemmy.world 8 points 3 months ago

Charge up a capacitor and allow a single button press to send a radio signal. Or maybe have enough power to send a WiFi signal.

[–] Varyk@sh.itjust.works 3 points 3 months ago

You're right, that would be the preferred application atm.

[–] sugar_in_your_tea@sh.itjust.works 2 points 3 months ago

I wonder if it could power a sensor. Something like a soil dampness or thermometer, where you only need a few updates per day. Could be pretty cool for passive monitoring applications.