Heat, voltage drop, and vibration are some other methods. | Hacker News

Hacker News new | past | comments | ask | show | jobs | submit

login

		jotux 9 days ago \| parent \| context \| favorite \| on: Energy-Harvesting Electronic Holiday Card 2024 Heat, voltage drop, and vibration are some other methods.

mmastrac 9 days ago [–]

This card apparently has three - but none of those additional ones you listed, unfortunately.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact