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2 layers145.1 × 182.1 mmSplit keyboard Macondo, the printed circuit board in 3D

A kayboard that uses 2 independent parts to work.

Size
145.1 × 182.1 mm
Copper layers
2
Thickness
1.6 mm
Parts
90
Nets
72
Pads
352
Tracks, vias
394, 61
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
18 Jun 2026
Updated
19 Jun 2026

Overview

Split keyboard Macondo is an open-source printed circuit board by anton2785-bit, from the anton2785-bit/Split_keyboard_Macondo repository on GitHub. It is a 2-layer board of 145.1 × 182.1 mm with 90 parts on 72 nets, routed with 394 tracks and 61 vias.

It is built around the 1N4148W. Its parts include 40 switches, 38 diodes, 4 resistors, 4 connectors and 2 ICs. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.

Main components

1

README

README.md

Split_keyboard_Macondo


What is this project

  • This is a split keyboard. That means that it has 2 separarate parts that are conected to the PC via bluethooth. This allows them to have separate layouts and to have the opportunity to be in different places whiie typing.

Why i made this project

  • I wanted to have a small portable keyboard that I can still use for typing and to be compact.

Images


  • This is an image of the schematic:

    Schematic
  • This is the PCB:

PCB
  • The 3D model of the PCB:
PCB 3D model
  • This is an image of the PCB with the frame: Case with PCB

Assembly

  • First everything has to be souldered.
  • Then You can place the keys and keycaps in the hotswap sockets.
  • After that the code has to be uploaded to the XIAO.
  • Then after the coding you can place the assembly into the case and be good to go.

BOM

NamePurposeQuantityTotal Cost (USD)Distributor
nRF52840Connects to the PC and gets the signals from the switches2$33.50Seeedstudio
PCBA place for all of the components1$35.00JLCPCB
KeycapsMake it easier to type4$22.00AliExpress
DiodesStops the current in one direction1$2.10AliExpress
SwitchesA switch2$21.28Gateron
Hotswap modulesMakes the keys easier to remove1$8.80Gateron

Total Estimated Cost: ~$123


Side note

  • I will change the code for the keyboard to a not AI generated one. I generated it because I dont have the chips now to make it properly or test it.

Credits

  • Designed and built by *(Anton/ Anton-2785-bit)
  • Inspired by open‑source mechanical keyboard and hackpad communities (https://macondo.hackclub.com/).

Parts

90
QtyValueFootprintReferences
381N4148WDiode_SMD:D_SOD-123D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +22
38SW_Push_45deggateron ks33:Gateron-KS33-Hotswap-1USW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW21, SW22, SW23, SW24 +22
4Conn_01x01_PinMountingHole:MountingHole_2.2mm_M2_DIN965_PadJ1, J2, J3, J4
22MResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR2, R4
2806kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR1, R3
2MouseBitemouse-bite.pretty-main:mouse-bite-3mm-6mmB1, B2
2SW_Push_SPDTButton_Switch_THT:SW_Slide_SPDT_Straight_CK_OS102011MS2QSW20, SW40
2XIAO-nRF52840-SMDxiao nrf52840 smd:modified-XIAO-nRF52840-SMDU1, U2

Questions

How big is the Split keyboard Macondo PCB?

It measures 145.1 × 182.1 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Split keyboard Macondo use?

90 parts, built around the 1N4148W. 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 Split keyboard Macondo KiCad files?

From the anton2785-bit/Split_keyboard_Macondo repository on GitHub, at the commit this page was made from: the board is PCB/Split_keyboard_macondo.kicad_pcb and its schematic PCB/Split_keyboard_macondo.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Split keyboard Macondo design in my own project?

Its repository states no licence, so its author keeps all rights: ask anton2785-bit before reusing the design.

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