Rather than having multiple voltage regulators, it occurs to me that since you are plugging into the wall any way, get some wall worts that put out different voltages, and set one at 7 volts and one at 5 volts.
Rather than having multiple voltage regulators, it occurs to me that since you are plugging into the wall any way, get some wall worts that put out different voltages, and set one at 7 volts and one at 5 volts.