Don't freak out or anything. But all that time you spent building a DIY in-wall USB charger
may have been for naught. Of course, you've gained a useful learning experience and potentially gotten a lesson in the dangers of electricity, but you could have simply ordered this TruPower UCS outlet from FastMac, which packs the same two USB charging ports as the DIY outlet, along with two standard power outlets for your other power-hungry devices. Best of all, it only costs the same ten bucks that the DIY option would have set you back, but it looks like it won't start shipping until sometime early next year.