Attributes

Brand	-
Category	Electronic Components / Maker DIY / Development Boards & Control Boards
Origin	-
Microcontroller Model	STM32F103C8T6
CPU Architecture	ARM Cortex-M3 32-bit RISC
Maximum Frequency	72 MHz
Flash Memory	64 KB
SRAM	20 KB
Operating Voltage	3.3V (Logic), 5V (Input via VIN)
USB Interface	Micro USB Type B
GPIO Pins	35 Programmable I/O Lines
Debug Interface	SWD and JTAG Compatible
Board Dimensions	53mm x 23mm x 10mm

5 reviews

Anonymous

Apr 11, 2026

Rating: 5/5

Reliable Starter Kit

Bought this for a university project. The clock speed is sufficient for most control tasks. I appreciate the clear silk screening on the PCB which makes wiring much easier.

Anonymous

Mar 28, 2026

Rating: 5/5

Perfect for RTOS Learning

This board is exactly what I needed to start learning FreeRTOS. The Wei Dongshan design notes are helpful, and the pinout is standard Blue Pill. Compiled and flashed without issues using STM32CubeIDE.

Anonymous

Mar 19, 2026

Rating: 5/5

Excellent for Embedded Systems

Very stable board. I ran it continuously for a week testing task switching in RTOS and it never crashed. The power consumption is also quite low which is good for battery projects.

Anonymous

Mar 18, 2026

Rating: 4/5

Good value but needs driver setup

The hardware is solid for the price. Just be aware you might need to install CH340 drivers depending on the USB converter batch. Once that was sorted, it worked great for my sensor project.

Anonymous

Feb 14, 2026

Rating: 3/5

Bootloader needed update

The board arrived working, but the default bootloader was a bit finicky with my ST-Link V2. After updating the bootloader via UART, it has been smooth sailing. Good hardware, just be prepared to troubleshoot.

5 FAQ

Q: Are the GPIO pins 5V tolerant?

A: Most GPIO pins are not 5V tolerant. Please ensure you use 3.3V logic levels or appropriate level shifters when connecting to 5V sensors to avoid damaging the MCU.

Q: Is this board compatible with Arduino IDE?

A: Yes, you can program this board using the Arduino IDE by selecting the generic STM32 board manager package. However, for RTOS development, we recommend STM32CubeIDE or Keil.

Q: Does it come with pre-installed RTOS software?

A: The board comes with a basic blink example. You will need to download and configure FreeRTOS or another RTOS separately according to your project requirements.

Q: What debugger do I need to purchase separately?

A: We recommend using an ST-Link V2 or V3 debugger for flashing and debugging. The board has dedicated SWD pins for this purpose.

Q: Can I power this with 5V from USB?

A: Yes, the board includes a voltage regulator. You can power it via the Micro USB port or the 5V pin. The logic level remains at 3.3V.

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