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Blue Pill

STM32F103C8 STM32F103C8. Cheap STM32F103C8 board. Flash it through a USB-UART adapter: BOOT0 jumper to 1, TX to A10, RX to A9.

Where to buyAliExpress1 project
Pinout drawing

Projects for this board

FreeJoyJoystick and button box controller on a Blue Pill: up to 8 axes and 128 buttons for flight and racing sims.Soldering, about 2 hBesides the board: Potentiometers, hall sensors and buttonsBlue PillBy Chipnik catalog