When Arduino debuted, most sensors and other interfacing devices ran on 5 volts. This tutorial shows how to hack your 5 volt Arduino board to run on 3.3 volts. It is a simple procedure involving ...

上周末，我将电源和电子器件迁移到了机柜中，然而，当我用手轻按电源开关……没有动静！我拿出心爱的万用表，开始四处 ...