Hello, I'm putting together a small PCB with a PIC MCU and an ethernet port, and I would like this unit to be mobile. Thus, I need to design my power supply to handle a battery pack and then regulate the voltage so it can be used by the microcontroller. I would like to use AA batteries. Does anybody have particular tips on using batteries? Is it as simple as a bypass capacitor and a voltage regulator (like an LDO), and then I can go straight to the MCU? Thanks in advance for any help.