These night-time bottle lights are made up of a simple circuit, a battery, four LED lights, some plastic tubing, a small solar panel and the bottle itself. The LEDs are housed inside the protective bottle, with the solar panel screwed into the top. The three-watt lights provide enough brightness to light a 15sq m room. The circuits are cleverly designed so that they automatically switch on and off in the presence or absence of daylight.
With the addition of a 10ft PVC pipe, or pole made from bamboo or wood, the device can be transformed into a streetlight. More importantly, all the components are open-sourced and can be built from scratch, even down to the circuit itself, the instructions for which can be found online (goo.gl/QEsfFv).
The fact that the technology is not owned by a large, multinational corporation is hugely important in the charity's bottom-up approach http://www.independent.co.uk/life-style/gadgets-and-tech/features/liter-of-lights-solar-powered-diy-lamp-made-from-a-plastic-bottle-is-transforming-lives-9993728.html.....................................................................................................................................................
..........................................
Oct 2013 http://blog.fnb.co.za/ideas-can-help/view-idea/?id=6208&d=82773506182850
....................................................................................................................................................
amazon is selling one version: https://www.amazon.com/Powered-Waterproof-Wedding-Christmas-Outdoor/dp/B076CCWWDR
..........................................
quart bottle of water, indented base, low-power LED (9 lumens)--not enough to read by but mellow
...........................................................................................................................................................
a different idea: https://www.cnet.com/news/light-bandit-a-straw-for-sunlight/
..................................................................................................................................
Many homes throughout the developing world still rely on dirty fuels to provide simple things like indoor and outdoor lighting. Fuel-based lighting such as candles, firewood, and kerosene lanterns are the norm for millions of people, creating unfavorable living and health conditions. The shift toward solar-LED lighting is in progress, but it is slow. According to the Lawrence Berkeley National Laboratory (Berkeley Lab), the tremendous environmental and health benefits of switching to solar-LED lighting are supplemented by economic development. https://cleantechnica.com/2016/07/20/conversion-solar-led-lighting-developing-countries-create-2-million-new-jobs/
No comments:
Post a Comment