/********************************************************Program function: MCU keeps sending data to PC, and displaysASCII characters corresponding to 0~127 on the screen------------------------------
I received the board and I'll show it off first. I thought it was an LQFP package, but it turned out not to be. It was too hard to solder it myself, so I was a little disappointed. The board was solde
I have had some time recently and saw some interesting anecdotes. Let me first talk about the reverse recovery of diodes in power frequency rectifier and filter circuits. A group of nerds quoted from
This post will introduce in detail how to upgrade the firmware of pyboardCN V2. The MCU of pyboardCN V2 is STM32F405, and any method supported by STM32 can be used, so we can upgrade it through the fo