2020-10-21 21:19:42 +02:00
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# Officially supported microcontrollers
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While most Circuitpython devices are great for hand wired keyboards, most
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keyboards are designed to accept a Pro Micro. The boards listed below either
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are, or can be adapted to that pinout to use common keyboards already on the market.
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## Nice!Nano
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Features include
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- Pro Micro pinout
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- Both USB HID and Bluetooth support
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- Can do bluetooth split keyboards with no wires at all
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- Has battery support including charging
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Downsides
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- $25 USD per microcontroller at most retailers
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2021-06-25 19:53:58 +02:00
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Common Retailers
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2020-10-21 21:19:42 +02:00
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[Boardsource](https://boardsource.xyz/store/5f4a1733bbaa5c635b83ed67)
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[NiceKeyboards](https://nicekeyboards.com/collections/group-buy/products/nice-nano-v1-0).
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## ItsyBitsy M4 Express
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Features include
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- Affordable at $15 USD
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- Can run most features of KMK including RGB
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Downsides
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- Needs adapted to work with Pro Micro pinout keyboards. Adapter can be found
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[HERE](https://github.com/KMKfw/kmk_firmware/tree/master/hardware)
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2021-06-25 19:53:58 +02:00
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Common Retailers
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2020-10-21 21:19:42 +02:00
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[Adafruit](https://www.adafruit.com/product/3800)
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2021-06-25 19:53:58 +02:00
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## RP2040
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Features include
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- Very affordable
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- Very powerful for the price
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Downsides
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- Little support for keyboard kits
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Common Retailers
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[Adafruit](https://www.adafruit.com/pico?src=raspberrypi)
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[Sparkfun](https://www.sparkfun.com/products/17829?src=raspberrypi)
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2020-10-21 21:19:42 +02:00
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## Adafruit ItsyBitsy nRF52840 Express
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Features include
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- Both USB HID and Bluetooth support
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- More affordable than the Nice!Nano at only $18
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Downsides
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- Needs adapted to work with Pro Micro pinout keyboards. Adapter can be found
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[HERE](https://github.com/KMKfw/kmk_firmware/tree/master/hardware)
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- No battery support without addon board found
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[HERE](https://www.adafruit.com/product/2124)
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2021-06-25 19:53:58 +02:00
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Common Retailers
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[Adafruit](https://www.adafruit.com/product/4481)
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2020-10-21 21:19:42 +02:00
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## Other microcontrollers
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What you'll need to have at minimum
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- CircuitPython/KMKpython
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- 256KB of flash storage
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- HID over USB and/or Bluetooth.
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