Attributes

Brand	-
Category	Electronic Components / Maker DIY / Development Boards & Control Boards
Origin	-
Microcontroller	STM32F103C8T6
CPU Core	ARM Cortex-M3 32-bit
Max Clock Frequency	72 MHz
Flash Memory	64 KB
SRAM	20 KB
Operating Voltage	3.3V
Input Power	5V DC via Micro USB
Ethernet Controller	W5500 Hardwired TCP/IP
Communication Interfaces	USART, SPI, I2C, CAN, RS485
Board Dimensions	55mm x 23mm x 12mm

5 reviews

Anonymous

Apr 14, 2026

Rating: 4/5

Good for learning

Great board but the pinout silkscreen is a bit small. Otherwise perfect for STM32 development.

Anonymous

Apr 06, 2026

Rating: 5/5

Compact and Powerful

Fits all my needs for CAN bus testing in automotive projects. Highly recommend for engineers.

Anonymous

Mar 31, 2026

Rating: 5/5

Solid Ethernet Performance

The W5500 integration works flawlessly. Used it for a home automation hub and connectivity is stable.

Anonymous

Mar 24, 2026

Rating: 4/5

Needs ST-Link

Board is good but remember you need a separate programmer for flashing. Not included in box.

Anonymous

Jan 22, 2026

Rating: 5/5

RS485 works great

Tested Modbus RTU successfully. Very stable connection over long distances in my workshop.

5 FAQ

Q: Can I use 5V sensors directly?

A: No, GPIO pins are 3.3V logic. Please use level shifters for 5V components.

Q: Does it come with an ST-Link programmer?

A: No, the programmer is sold separately. You will need an ST-Link V2 or similar.

Q: Is this compatible with Arduino IDE?

A: Yes, this board is supported via the STM32duino core package.

Q: What library for Ethernet?

A: We recommend the Ethernet_W5500 library for best compatibility with this chip.

Q: Is CAN bus terminated?

A: No, external termination resistors are required on the bus line for proper communication.

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