Innovative wireless light switch could cut house wiring costs in half
www.ualberta.ca
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.

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.

  • DreadPotato@sopuli.xyzEnglish
    14·
    1 year ago

    Last time i saw a product claiming to run on energy harvested from radio-waves, it was a kickstarter project that (surprise surprise) turned out to be a complete scam.

    • ∟⊔⊤∦∣≶@lemmy.nzEnglish
      6·
      1 year ago

      It is totally possible to harvest energy from radio waves, it’s just such a tiny amount that you could barely light a LED

      • DreadPotato@sopuli.xyzEnglish
        1·
        1 year ago

        Yeah that’s my point, the energy you can actually harvest is ridiculously small. Even if it was slowly charging a capacitor with this harvested power and saving it for later use, how often can i use the switch before depleting the energy faster than it charges? “oh sorry, you’ll have to wait 5min to turn on your lights again, It’s not quite charged enough”