Is there an STM32 USB pen drive board with pin only for UART serial comms ?

[Domy_ST]

hello ST Community,

There's an STM32 board in a USB pen drive format with a small flash memory capacity and only a few pins (3-5 pins) for UART serial communication. On this STM32 board, inside the USB pen drive, I can program the dedicated software for serial communication.

If it exists, can you tell me the model and serial number? I can't find it online.

Thanks for the information.

[Peter BENSCH · Accepted solution]

You probably mean a so-called Blue Pill of an Asian manufacturer, which has, for many years now, only been produced with counterfeit MCUs. Desperate users who wanted to save a few cents regularly ask in the Community for a solution to the major problems they have with it.

There are two ways to avoid these problems:

1. Replace the counterfeit MCU with a genuine one
2. Use a NUCLEO board, e.g. one of the NUCLEO-32

A NUCLEO always comes with a debugger as well, so the apparent price advantage quickly vanishes.
And they are guaranteed to work flawlessly.

Hope that helps?

Regards
/Peter

[Pavel A.]

@Domy_ST Maybe this STM32C0 board can fit your description too. Genuine, fully supported.

[Andrew Neil]

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@Domy_ST wrote:

There's an STM32 board in a USB pen drive format with a small flash memory capacity and only a few pins (3-5 pins) for UART serial communication.

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Is that supposed to be a question ?

[Domy_ST]

@Andrew Neil 

yes, what's wrong?

[Domy_ST]

Thanks

[Andrew Neil]

You wrote it as a statement: "There is..."

So you meant a question: "Is there... ?"

[Domy_ST]

Yes, you're right, I didn't notice. It was a typo.