small form factor STM32 boards ...

Ozone · ‎2025-10-21

Doing a short search, I did not find a board that conveniently fits my criteria for some future projects.
These criteria are the following :
- small form factor (not bigger than a Rasperry Pico, preferably smaller (Seed XIAO);
- MCU preferably ranging from C0, F0...F3, F40x, L0 or L1; (not an exclusive list)
- reasonable commercial availability in Europe;

I intend to use these board as a kind of sensor extension for Linux SBCs, with the Raspberry Pi Zero (II) as favourite. Thus the Pi Zero / Pi Pico format as upper size limit.

I can't specify more IO details yet, but the average peripherals of above mentioned MCU variants suffices for most purposes. But at least 8 or more IO lines should be available. Peak performance and low-power capabilities are not a criterium either.

If someone here knows such a board, I would welcome any suggestion.
Thanks !

mƎALLEm · ‎2025-10-21

Hello,

Nucleo-32 format?

Or STM32C0116-DK:

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Ozone · ‎2025-10-21

Thanks, I didn't notice that the Nucleo-32 format is that small !
I have a few discovery Nucleo-64 and Nucleo-144 boards, which are huge in comparison.
If I am not mistaken, this is the form factor of a DIL-40 package (like e.g. the Z80).

As an additional bonus, the Nucleo's have debug access and an onboard debugger, which many "Arduino" boards lack.

On a temporally related note, it took me a while to log in for an answer, as ST forced my to change my password.
A practice I am not at all happy about. But that is a topic for another thread ...

mƎALLEm · ‎2025-10-21

@Ozone wrote:

If I am not mistaken, this is the form factor of a DIL-40 package (like e.g. the Z80).

This is the real size on a bread board:

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