Otro generador con un motor de gasolina

Hack a day

Pequeño dinamo que enciende un LED

Make

Una introducción sobre baterias

Adafruit

Otro generador eléctrico pero esta vez con un motor a gas

Make

Pequeño generador eléctrico usando una cubeta y algunos componentes

Make

Sistema de cambio de pilas para un robot

Hack a day

Monitor de corriente consumida de toda una casa

Hack a day

Como atrapar un rayo en un bloque de acrílico

Make

Sistema amortiguador que absorbe golpes y las convierte en engergía eléctrica

Engadget

Bobina de Tesla ajustable

Hack a day

Una bonita y practica tarjetita para utilizar el puerto USB como fuente de 5v

No hay muchos detalles, pero pues por la simpleza del circuito no se necesitan. Ver.

Como construir un motor en eje (hub motor)

Hub motors put the power inside of the wheel. [Teamtestbot] goes deep into the hows and whys of building these motors, from parts, to windings, to the math behind the power ratios. The working example puts an electric motor inside the rear wheel of a Razor scooter. Past projects used belts to transfer the work of the motor to the wheel of the scooter. By integrating the motor and the wheel you end up with a much cleaner looking product.

Hack a day

Tesla hizo esto muchos años atras

Fulton Innovation has made some fairly impressive demonstrations of its eCoupled wireless power technology (along with a few less than impressive ones), but most of those have left little space between the power source and the device being powered. As you can see above, however, that's now changed in pretty a big way, with Fulton taking to YouTube to show off a new mid-range inductive power system. While it's obviously not quite ready for home use, this slightly unnerving contraption does indeed appear to work as promised, with it able to power a 12 watt lamp at a distance of 35 inches, or light up an LED at various points in between

Engadget