Use TYPE-C for power supply and code downloading (the TYPE-C pad has been lengthened to facilitate soldering)
TYPE-C welding tutorial: type-c 16pin welding_bilibili_bilibili
PCB design process: draw a STC8G1K08 microcontroller core board_bilibili_bilibili
CH340N download circuit description:
This module can also be used as a small 51 microcontroller downloader, using SOP8 packaged CH340N
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