- cross-posted to:
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- cross-posted to:
- [email protected]
Researcher has developed, at a cost of less than one dollar, a wireless light switch that runs without batteries, can be installed anywhere on a wall and could reduce the cost of wiring a house by …::A U of A engineering researcher has developed a wireless light switch that could reduce the cost of wiring a house by as much as 50 per cent.
I’ve heard of this before but I think it’s really a trickle charge. Not practical for charging a phone or anything like that.