min34

A minimal split keyboard with 34 keys

Features

• 34 keys (inspired by Sweep)
• Support a hotswap switch both MX and Kailh low profile style (inspired by SofleKeyboard)
• Using seeed studio XIAO series microcontroller which means both wire and wireless are available
• Support a battery switch on/off if Bluetooth microcontroller is used
• The PCB is reversible
• No reset button (it's already on the microcontroller)

I don't focus on adding more features like an OLED display or a rotary encoder because I would like to keep it as simple as possible and I personally don't use them in my daily life (as a programmer).

Compnents

• 2x PCBs (for left and right)
• 2x seeed studio XIAO compatible boards.
• 34 switches of MX or Kailh low profile style
• 34 kailh switch sockets (MX or Kailh low profile)
• 34 diodes 1N4148W
• 34 keycaps
• (optional; only for battery support) 2x power switches (MSK 12C02)
• (optional; only for wire support) 2x TRRS connectors
• (optional; only for wire support) 1x TRRS cable
• 1 USB Cable

Firmware

Please refer to min34 zmk config

Thanks to

• SofleKeyboard
• crkbd
• Slice36
• Sweep
• Seeed xiao nrf52840 mcu: https://www.seeedstudio.com/Seeed-XIAO-BLE-nRF52840-p-5201.html
• Seeed Fusion PCBA service: https://www.seeedstudio.com/pcb-assembly.html
• Seeed Fusion DIY Mechanical Keyboard contest: https://www.seeedstudio.com/seeed-fusion-diy-xiao-mechanical-keyboard-contest.html

Gallery