Works as described. Very fast microcontroller. It has a number of different features compared to the regular Arduino. CAN bus. Multiple SPI ports. SPI DMA. However, this is not a replacement for your Arduino projects. There's significantly less library support, so I recommend those who rely on libraries check out how to modify the libraries to work with the STM32 (usually just a few fixes here and there). Also, don't let the price fool you, you'll need at least an ftdi programmer, and there are other, more expensive alternatives. If you can afford a small version of 3.2 or better, you're in much better shape for development.
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