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2 layers134.2 × 121.1 mmMimi, the printed circuit board in 3D

my mimi split keyboard

Size
134.2 × 121.1 mm
Copper layers
2
Thickness
1.6 mm
Parts
59
Nets
76
Pads
612
Tracks, vias
3,218, 30
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
13 Mar 2025
Updated
24 Jun 2026

Overview

Mimi is an open-source printed circuit board by mdk194, from the mdk194/mimi repository on GitHub. It is a 2-layer board of 134.2 × 121.1 mm with 59 parts on 76 nets, routed with 3,218 tracks and 30 vias.

Its parts include 27 diodes and 27 switches. It belongs with the keyboards and input boards of this library.

README

README.md

mimi keyboard

54 keys split keyboard. reversible pcb and 3d printed cases

top pcb bottom pcb

ZMK

  • main branch: left side as master
  • dongle branch: include config for dongle

TODO

  • qmk firmware
  • test trrs socket

Parts

59
QtyValueFootprintReferences
27ceoloide:diode_tht_sod123D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +11
27ceoloide:switch_choc_v1_v2S1, S2, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, S20, S21, S22, S23 +11
1ceoloide:mcu_nice_nanoMCU1
1ceoloide:battery_connector_jst_ph_2JST1
1ceoloide:reset_switch_tht_topRST1
1ceoloide:power_switch_smd_sidePWR1
1ceoloide:trrs_pj320a (reversible, symmetric)TRRS1

Questions

How big is the Mimi PCB?

It measures 134.2 × 121.1 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Mimi use?

59 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Mimi KiCad files?

From the mdk194/mimi repository on GitHub, at the commit this page was made from: the board is output/pcbs/board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Mimi design in my own project?

Its repository states no licence, so its author keeps all rights: ask mdk194 before reusing the design.

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