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Hawaii-Based Engineer Develops a Laser Powered by Tropical Fruit

Posted By Timon Singh On August 24, 2012 @ 1:33 pm In carousel showcase,Environment,Renewable Energy | 1 Comment

maui makers, hackerspae, lilikoi laser, tropical fruit laser, renewable power source, passion fruit, lilikoi laser, ryan K [1]

Ryan K, a member of the Maui Makers [2]hackerspace, has developed a laser powered by one of the strangest renewable power sources ever: tropical fruit! To be more specific, the power source is the Hawaiian Lilikoi fruit [3] (more commonly known as passion fruit). By using the fruit in conjunction with anodized bolts (source of zinc), thin copper pipe, wire, switches, LEDs and a capacitor, he was able to create a battery that literally grows on trees!

What is interesting about the Lilikoi vine is that it produces a massive amount of fruit in Hawaii, which is often viewed as a nuisance for any home-owners who own a tree. When the fruit drop, it has to be cleaned up, otherwise it rots and attract insects. Designer Ryan [2] noticed that the fruit had a strong acidic taste and thought it would work well as a battery.

Attaching his newly constructed fruit battery to a small green laser, Ryan was able to emit a small pulse. An optional volt meter was used to show the current charge available on the 6800uf capacitor, while an on/off switch with LED indicator light was used to activate the laser. Of course, this drained the power pretty quickly.

Still for a fruit-powered laser [2] capable of reaching at least 3v (max charge is approx 3.8v), it is quite an achievement! Could we soon see a day when we power our gadgets with rotten produce?

+ Maui Makers Blog (Lilikoi Laser) [2]

via Makezine [4]

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URL to article: http://inhabitat.com/the-lilikoi-laser-maui-based-engineer-develops-a-tropical-fruit-battery/

URLs in this post:

[1] Image: http://inhabitat.com/wp-content/blogs.dir/1/files/2012/08/engineer-developed-passion-fruit-powered-batteries.jpg

[2] Maui Makers : http://www.mauimakers.com/blog/2012/08/lilikoi-laser/

[3] Hawaiian Lilikoi fruit: http://www.instanthawaii.com/cgi-bin/hawaii?Plants.passion

[4] Makezine: http://blog.makezine.com/2012/08/23/tropical-fruit-powered-laser/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+makezineonline+%28MAKE%29&utm_content=Google+Reader

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