Adafruit is joining the PiCast team as our special guests for this episode to give everyone a closer look at the new KB2040 and CircuitPython features.
I saw immediately that it has a Pro Micro -compatible pinout.
Indeed, the Pro Micro pinout has become a de-facto standard for DIY keyboards.
Sparkfun already has a Pro Micro RP2040with similar features (USB-C + breakout, compatible I²C port, castellated edges, ...) but with twice the flash for a dollar more.
Some newer Pro Micro-compatible boards for the DIY keyboard community have five additional GPIO pins on the short edge. Too bad that neither of these two do.