As an electronic enthusiast, you are not going to find a 3.3V power supply and tangled, is not the number of expansion of the power supply interface is not enough and distress? This experience, I believe that people who engage in electronic design will often encounter. In order to facilitate everyone can find a high security, easy to use, power expansion interface rich regulator module, the shop designed such a 5v to 3.3v power regulator module, the module for single-chip project design needs 3.3V power supply Electronic equipment. At the same time, you can facilitate the expansion of some electronic design power.