Solar lanterns made out of jam jars


At Tokyo Hackerspace, they’re making these cool little solar lanterns out of regular jam jars and distributing them all over the Tohoku and Kanto regions in case there’s a blackout. The DIY kit is available for free here.

5 thoughts on “Solar lanterns made out of jam jars

  1. Cool.
    The tutorial looks simple enough, but how does one buy the kit? The link on the side to the store displays a blank page.

  2. Very cool… I read up on Tokyo H/S shortly after the 11th… I think Alt pointed me there… amusingly, it’s almost like catching different fireflies in a jar like when you were a kid.
    BTW, are you going to hit ComicCon?

  3. Water Heater by Solar Energy

    The solar water heaters can be used for private and commercial. These include solar collectors and storage tanks. There are basically two types of solar water, including active and passive systems. The system is not an active pumping system and control…