[Upgrade] Low cost and high stability, it can replace the foundation of the STM32F103C6T6 chip. (If your flash is less than 32K, RAM is less than 10K, and Timer 4 and Serial 3 are not used, you can use it instead) ST-Link V2 Programmer: supports a full range of STM32 SWD debugging interface, simple 4-wire interface (including power supply), fast and stable; interface definition scale directly marked 40-pin STM32F103C6T6 Minimum System Board: -USB connector, which can power the board and communicate with USB. Added 5V power output, and the output I/O port is , to avoid incorrect operations caused by damage to the ST-LINK V2 Color: Random color, do not accept the specified color Material: Plastic + Metal Package Contents: 1 x STM32F103C6T6 Development Board (unwelded pin header) 1 x ST-Link V2 Downloader (random color, do not accept the specified color) 1 x Line (random color, do not accept the specified color) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.