STM32F103C8T6 Blue Pill ARM Cortex-M3 Development Board

The STM32F103C8T6 "Blue Pill" is a popular and affordable ARM Cortex-M3 development board based on the STM32F103 microcontroller. With 72MHz clock speed, 64KB flash, 20KB RAM, and a rich set of peripherals, it's a powerful upgrade from Arduino for embedded systems and IoT projects. Includes yellow header pins for easy breadboard use.

Key Features

• MCU: STM32F103C8T6 ARM Cortex-M3 @ 72MHz
• Flash: 64KB | RAM: 20KB
• 8MHz onboard crystal oscillator
• Micro USB for power and programming (via ST-Link)
• BOOT0 & BOOT1 jumpers for bootloader selection
• 37 GPIO pins: PA0–PA15, PB0–PB15, PC13–PC15
• Peripherals: SPI, I2C, USART, ADC, PWM, CAN
• 3.3V operating voltage with 5V tolerant pins
• Includes yellow male header pins
• Compatible with Arduino IDE (via STM32duino) and STM32CubeIDE

Applications

Embedded systems, IoT devices, motor control, robotics, data logging, and advanced maker projects requiring more power than Arduino.