Summary: I made a USB to charge lithium batteries, stable at 3.3V (requires 3.3V, 0.5A). See the attached schematic.Test phenomenon description:1. I found a very strange phenomenon that temperature ch...
The game is very easy, full marks!! But I forgot to take a screenshot!! Overall feeling: the board is as its name suggests: "Easy" simple! Easy to use! Quick to get started!! The introduction of the p...