We are fans of creative DIY designs for gadget charging and lighting. So of course we were drawn to this entry in the Instructables Green Design contest for creating a simple thermoelectric emergency generator for an LED light (or possibly other gadgets) using just a handful of parts. It is not only a neat project for creating an emergency light but also an excellent project for kids learning about science.
From the project: “I´m using a thermoelectic module, also called peltier element, TEC or TEG. You have one hot side and one cold. The temperature difference in the module will start producing electricity. The physical concept when you use it as a generator it’s called the Seebeck effect. Read more