Meet the STM32 Breakout a tiny yet mighty module designed around the STM32F411CEU6 (Cortex-M4F) running at 100 MHz. It features a USB-C connector for power and programming, dual rows of castellated and through-holes for flexible integration, onboard Reset and Boot buttons, an RGB LED, and full compatibility with Arduino, MicroPython, CircuitPython, PlatformIO and STM32Cube-IDE.

Despite its compact size (~28 21mm), the STM32 Breakout delivers 512 KB of flash and 128 KB of SRAM, making it ideal for embedded projects, high-performance sensors, robotics, IoT and wearable applications.

Key Selling Points

• 100 MHz Cortex-M4F core with FPU

• 512 KB flash / 128 KB SRAM

• USB-C connection for power & programming

• Dual rows of castellated + through-holes (~17 GPIO pins exposed)

• On-board Boot & Reset buttons; RGB LED indicator

• Compatible with popular toolchains: Arduino, MicroPython, CircuitPython, STM32Cube, PlatformIO

• Small form-factor enables easy PCB integration or breadboard use

  Specifications
  

  Parameter	Value
  Microcontroller	STM32F411CEU6 (Cortex-M4F) @ 100 MHz
  Memory	512 KB Flash, 128 KB SRAM
  USB Interface	USB-C for power & programming
  GPIO Exposure	~17 usable I/O pins via dual rows of holes
  Board Dimensions	~28 mm ~21 mm (approx)
  On-Board Features	Boot button, Reset button, RGB LED
  Integration Style	Through-hole + castellated edge soldering
  Supported Toolchains	Arduino, MicroPython, CircuitPython, STM32Cube, PlatformIO
  Typical Applications	Embedded systems, IoT modules, robotics, wearables