Archived This flashlight "Lumen" is powered by body heat, not batteries (youtube.com)
submitted ago by rajamanickam
Posted by: rajamanickam
Posting time: 5.1 years ago on
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Archived on: 2/12/2017 1:51:00 AM
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Archived This flashlight "Lumen" is powered by body heat, not batteries (youtube.com)
submitted ago by rajamanickam
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[–] skidmark-steve ago
Somebody needs to make a wireless keyboard with pressure switches beneath the keys. When you type, they charge a super-capacitor, which powers the keyboard.