2.2 KiB
2.2 KiB
Officially supported microcontrollers
While most CircuitPython devices are great for hand wired keyboards, most keyboards are designed to accept a Pro Micro. The boards listed below either are, or can be adapted to that pinout to use common keyboards already on the market.
nice!nano
Features include
- Pro Micro pinout
- Both USB HID and Bluetooth support
- Can do Bluetooth split keyboards with no wires at all
- Has battery support including charging
Downsides
- $25 USD per microcontroller at most retailers
Pre-compiling KMK for nice!nano
nice!nano has limited flash memory which does not fit CircuitPython, adafruit-ble, and KMK by default. You will need to use pre-compiled KMK to get it to fit. Grab compatible mpy-cross and run make compile to generate .mpy version of KMK files before copying them over.
Common Retailers
ItsyBitsy M4 Express
Features include
- Affordable at $15 USD
- Can run most features of KMK including RGB
Downsides
- Needs adapted to work with Pro Micro pinout keyboards. Adapter can be found HERE
Common Retailers
RP2040
Features include
- Very affordable
- Very powerful for the price
Downsides
- Little support for keyboard kits
Common Retailers
Adafruit ItsyBitsy nRF52840 Express
Features include
- Both USB HID and Bluetooth support
- More affordable than the nice!nano at only $18
Downsides
- Needs adapted to work with Pro Micro pinout keyboards. Adapter can be found HERE
- No battery support without addon board found HERE
Common Retailers
Other microcontrollers
What you'll need to have at minimum
- CircuitPython
- 256KB of flash storage
- HID over USB and/or Bluetooth.