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Split-Keyboard

Arwinplayz·Split-Keyboard·PCB/Split keyboard.kicad_pcb

Split-Keyboard PCB layout, top view — open source Nordic nRF board by Arwinplayz
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About the Split-Keyboard PCB

Split-Keyboard is an open source Nordic nRF PCB design by Arwinplayz, published on GitHub. It is a 2-layer board measuring 180 × 128 mm, with 124 components from 6 distinct parts.

Its main chip is the XIAO-nRF52840-SMD, from the Nordic nRF family. By type, the board carries 60 diodes, 58 switches, 4 resistors and 2 ICs.

It belongs with the keyboards and power & battery designs in this gallery.

From the project

Full sized keyboard with a split design

This keyboard is a split design, fully programmable using KMK firmware. The goal was to design something that would provide a decent typing experience and replace my current keyboard. ---

Split-Keyboard, from the project README
From the project README

Main components on the Split-Keyboard

XIAO-nRF52840-SMD

Split-Keyboard bill of materials (BOM)

124 components, 6 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
XIAO-nRF52840-SMD
U1, U2
56
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +48
2
RotaryEncoder_Switch
SW57, SW58
60
D
D1, D2, D3, D4, D5, D6, D7, D8 +52
2
806K
R1, R2
2
2M
R3, R4

Split-Keyboard design files

The KiCad project lives in the Arwinplayz/Split-Keyboard repository on GitHub; these links point at the commit this page was built from.

Split-Keyboard: common questions

What microcontroller does the Split-Keyboard use?

The Split-Keyboard is built around the XIAO-nRF52840-SMD, from the Nordic nRF family.

How big is the Split-Keyboard PCB?

The Split-Keyboard measures 180 × 128 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Split-Keyboard?

124 components, from 6 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Split-Keyboard design files?

From the Arwinplayz/Split-Keyboard repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Split-Keyboard design in my own project?

The repository has no license, so all rights stay with Arwinplayz. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Split-Keyboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Nordic nRF firmware against it before you order a PCB.

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