Where I can buy original STM32F401CEU6 model Black Pill?

[nanoant]

I want to buy STM32F401CEU6 @ 84Mhz 512KB ROM 96KB RAM Black Pill model (as listed in README), but it is not available anywhere. I can find only lot of old STM32F401CCU6 clones all around Aliexpress, but I'd prefer to buy original.

Official WeAct Studio Official Store lists only more expensive STM32F411CEU6. Is there any chance to get cheaper ($3?) STM32F401CEU6 on stock?

I need to cheap ARM board for radio communication for kids, but STM32F411 is tad too expensive. I like STM32F401 as it is cheap and provides 5V tolerant pins and enough RAM and ROM. But otherwise I'd use Rpi Pico, which however has no 5V tolerant pins.

[kmkaczor]

I think WeAct stopped making those, so you're going to have to buy one of the clone boards.

Otherwise, there is a STM32F40 Nucleo kit on digikey for about , but that's a bit different.

You could look into the Nuvoton M051, I have no experience with it, but I think it is 5v tolerant and quite cheap.

Otherwise, you could go with a RP2040 Pico board and use 3.3v nRF24 modules -- the latter can be quite cheap and you can get them for a USD buck a piece, but it might be worth soldering capacitors to the VCC and ground lines to make them actually usable (not difficult at all and might be a good learning project on soldering for kids....).