he did something about and built a phone charger out of parts he had kicking around. The charger is quite simple. The user cranks on a DC motor and the output power goes into a LM2596-based step ...

If you've had your phone for more than six months and you're gradually finding the charger becoming less and less stable (particularly if you have to wiggle it around to get it to begin charging ...

This portable solar cooker has already destroyed its Kickstarter goal Solar Paper works in essentially the same way as any other portable USB charger. When you need to juice up your phone just ...