A core board compatible with STM32F103C8T6 and C6T6. It has a CH340N on the board, which can carry out serial communication through micro-usb. It also leads to a USB to TTL pin header to facilitate the use of the module for serial communication. There is a 3V3 power indicator light and a user-defined light on the board, and there is only a Reset button. The core board is equipped with 4 M2 screw holes for easy fixing. This core board does not have a one-click download circuit and cannot download programs through the serial port.
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