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[GB] BB40


Group Buy is now closed.

Fulfillment is expected to start in May.



Acrylic Color*


Assembly Aids


Add-ons total:



The BB40 is a no-nonsense 40% minimal layout featuring an optional layout to support arrow keys and a position for an encoder in the corner below the top mounted BlackPill. The BB40 also is fully compatible with the PillBug wireless dev board as a replacement for the BlackPill, if you would like to use this board with BlueTooth. The BB40 features a position for 3 status LEDs on the right side in between the mounting positions for the acrylic guard covering the development board of your choice. The BB40 supports MX and Choc switches, both arranged with normal MX spacing.


  • MX and Choc switch support
  • BlackPill powered
  • QMK and ZMK support
  • Optional Encoder
  • Compact 40% layout

Kit Contents:

  • PCB, switch plate, bottom plate
  • Assembly hardware
  • Acrylic guard
  • Encoder & knob
  • BlackPill
  • Status LEDs