Bought two of these and they have been very nice to work with so far. Quick to setup and get going with. Not the biggest fan of circuit python but that’s not a knock on the board just personal preference and I saw that someone made an arduino core but I haven’t had a chance to try it yet. If the usb-a version comes back in stock I’m definitely buying more.
This little board is great for learning CircuitPython or for tiny USB dongle type projects. I've already thrown together some code to act as a mouse using a joystick or to type a sequence of keys when inserted into a USB port.
I needed a compact MC board that plugs directly into a USB jack - Serpente exactly fits the bill. I'm using it to "trick" a PC into thinking it's getting mouse and keyboard input. My only complaint is that the documentation is a little thin. I wanted to do a little "Hello world" test varying the color of the RGB LEDs, and it took me a while to guess how to access those pins. Thankfully, the Python names matched the schematic names - thank you! If I had looked further down in the reviews I would have seen the example and saved a few minutes.