Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller | STM32L431RCT6 |
| Architecture | ARM Cortex-M4 with FPU |
| Max Frequency | 80 MHz |
| Flash Memory | 256 KB |
| SRAM | 64 KB |
| Operating Voltage | 3.3V |
| Input Voltage | 5V via USB or VIN pin |
| Debug Interface | SWD (Serial Wire Debug) |
| GPIO Pins | Multiple 5V tolerant I/Os |
| Package Type | LQFP64 |
Anonymous
Mar 24, 2026
Rating: 5/5
Excellent learning platform
I bought this to transition from Arduino to professional ARM development. The L431 chip offers plenty of peripherals to experiment with, and the board layout is very beginner-friendly.
Anonymous
Mar 24, 2026
Rating: 4/5
Good board, needs external programmer
The board itself is fantastic, but remember it does not have a built-in ST-Link debugger. You will need an external programmer like the ST-Link V2 to flash code, which wasn't immediately clear to me.
Anonymous
Mar 22, 2026
Rating: 4/5
Great value, minor documentation gaps
Hardware quality is solid and the pinout is standard. I deducted one star because the included quick start guide was a bit sparse, but the online community resources filled in the blanks easily.
Anonymous
Mar 20, 2026
Rating: 5/5
Reliable for prototyping
We used several of these for initial prototyping of an industrial controller. They handled the environment well and the performance matched the datasheet specifications perfectly.
Anonymous
Mar 17, 2026
Rating: 5/5
Perfect for low-power projects
This board is exactly what I needed for my battery-operated sensor node. The sleep modes work flawlessly, and the power consumption is incredibly low. Setup with STM32CubeIDE was straightforward.
Anonymous
Mar 16, 2026
Rating: 5/5
Best in class for power efficiency
If you are building something that needs to run on a coin cell for months, this is the board to get. The ultra-low-power modes are easy to configure and very effective.
Q: Does this board come with a built-in USB-to-serial converter?
A: No, this specific core board focuses on the microcontroller itself and does not include an onboard USB-to-serial bridge. You will need an external TTL UART adapter for serial communication.
Q: Does the STM32L431RCT6 support floating-point operations?
A: Yes, the Cortex-M4 core in the STM32L431RCT6 includes a single-precision Floating Point Unit (FPU), making it suitable for applications requiring mathematical calculations.
Q: Can I power this board directly via the 5V pin?
A: Yes, you can supply 5V to the VIN or 5V pin. The onboard regulator will step this down to 3.3V for the microcontroller. Ensure your source is stable and within the recommended range.
Q: Is this board compatible with the Arduino IDE?
A: Yes, it is compatible. You can use the STM32duino board package within the Arduino IDE to program this board, though we recommend STM32CubeIDE for accessing advanced low-power features.
Q: What debugger interface does this board support?
A: The board exposes the SWD (Serial Wire Debug) interface pins, which are compatible with standard debuggers like the ST-Link V2, V3, or J-Link.
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