This is a great adaptor board. I absolutely love it.
For PicoBit
I have every micro:bit form factor board that I can find. Ten in total now. This was one I was very excited about. micro:bit boards are hard to come by at a reasonable price at the moment of writing this. Using a Raspberry Pi Pico is a low-cost alternative with great resources. I plan to use standard MicroPython with this adapter, but I can plug my Pico that is flashed with CircuitPython in as well. The pin mapping is not in the GitHub repo, but Wayne was very responsive and replied to my questions less than an hour after messaging him. I have played with it for a couple of hours now, and it works perfectly. This product is highly recommended. I am planning to buy more if they are available in the near future. The actual board looks much better than the picture too. Thank you for creating this.
Edit: I added another star for the documentation. The GitHub repo was revised with the pin mapping.