Adventures in Battery-L and Part 1

摘要

Microprocessor boards can be powered in a number of ways. Most boards are readily powered through the USB programming cable linking your microcontroller board to your PC during development and programming. Once your project is finished and running stand-alone, a new source of power is needed. As shown in Figure 1, line-powered schemes are easy. Many Arduino boards, for example, have a power jack onboard that an AC wall wart (7-12 VDC output) power pack can be plugged into.