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When doing hardware projects, there may be dozens or even hundreds of chips to choose from to complete a function, but we don’t know in advance which chip is the most suitable in terms of cost and per
Has anyone encountered the problem that the MCU reset circuit cannot burn the program when connected to the battery? When the PCBA is connected to the battery, it cannot be burned. You must disconnect
1. The transformer lead numbers on the transformer drawing, PCB and schematic diagram must be consistent. [/b] [/size][/font][/color][/align][align=left][color=rgb(51, 51, 51)][font=-apple-system-font