Eco Factor: Solar-powered LED coasters that turn blue light up depending on the temperature of the object you place on them.
Some DIY stuff is real complicated and ends up giving you a pretty dull-looking gadget that you soon discard. But the solar-powered LED coasters are both compact and delightful. They have a sleek, sophisticated and polished look. The LED coasters are powered by the sun, and all you need to do is charge them up during the day and they will shine their magic once the party times roll at night. The LED in the coasters turn blue when you place a cold drink on them and red when you put a hot drink on top.
The simple, design makes them perfect for every modern home and they look as good as any designer product. You save on energy and also get a beautiful gadget to adorn your table. Since it is a fully analog system, you need not worry about microprocessors or pre-programming at all. You can find the step-wise details right here. So get started and knock yourself out green!
