Microcontroller boards and Keyboards

Raspberry Pi Pico

https://www.raspberrypi.com/products/raspberry-pi-pico

• PiPi Gherkin - Small and cute
• Lunakey Pico - Split-type
• Shotgun CherryPie - Macro pad with rotary encoders and LED

Sparkfun Pro Micro RP2040 (DEV-18288)

https://www.sparkfun.com/products/18288

• meishi2 - Four-keys macro pad
• CRKBD (Corne) - Split-type with LED
• Claw44 - Split-type
• Helix rev3 - Split-type with rotary encoders and LED
• Amatelus73 - Duplex matrix with LED

PICO Micro

https://booth.pm/en/items/3214808

• Runner3680 5x7 version ¹ - Split-type

XIAO RP2040

https://wiki.seeedstudio.com/XIAO-RP2040

• Tested with SU120 ²

Adafruit KB2040

https://learn.adafruit.com/adafruit-kb2040

• Tested with SU120

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1. PICO Micro is equivalent to Pro Micro regarding footprint and capability. But the profile of Pro Micro RP2040 seems too big to be installed into Runner3680.

2. SU120 is an expandable keyboard PCB with up to 120 keys. https://github.com/e3w2q/su120-keyboard

(left: Raspberry Pi Pico / right: Sparkfun Pro Micro RP2040)