The STM32F103C8T6 Blue Pill is a powerful ARM Cortex-M3 development board offering superior performance to Arduino boards at a fraction of the cost. With 72MHz clock, 64KB flash, and rich peripherals, it is ideal for advanced embedded systems.
Key features
- ARM Cortex-M3 32-bit processor at 72MHz
- 64KB flash memory and 20KB SRAM
- 37 GPIO pins with multiple alternate functions
- Rich peripherals including 3 USART, 2 I2C, 2 SPI, CAN, USB
- 12-bit ADC with 10 channels
- 4 timers with PWM, input capture, and output compare
- Low cost with professional-grade performance
Good to know
- Operates at 3.3V – use level shifters for 5V sensors
- Install STM32 core in Arduino IDE or use STM32CubeIDE
- USB bootloader may need initial flash via ST-Link or serial
- Some boards have incorrect USB pull-up resistor – check schematic
- ST-Link V2 recommended for debugging