HardLabs

Split Keyboard

Ari-Hetti·Split-Keyboard·Hardware/Split Keyboard.kicad_pcb

Split Keyboard PCB layout, top view — open source Nordic nRF board by Ari-Hetti

About the Split Keyboard PCB

Split Keyboard is an open source Nordic nRF PCB design by Ari-Hetti, published on GitHub under the MIT license. It is a 2-layer board measuring 203.5 × 92.5 mm, with 84 components from 16 distinct parts.

Its main chip is the XIAO-NRF52840-SMD, from the Nordic nRF family. By type, the board carries 34 switches, 32 diodes, 8 resistors, 6 capacitors, 2 ICs and 2 connectors.

It belongs with the keyboards and iot & wireless designs in this gallery.

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)

84 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO-NRF52840-SMD
XIAO-nRF52840-SMD
U1
1
XIAO-nRF52840-SMD
U2
1
C2906268
1.0-2P WT
CN1
1
1.0-2P WT
CN2
30
Switch
SW1, SW2, SW3, SW4, SW5, SW6, SW9, SW10 +22
1
EC11
SW7
2
Switch
SW8, SW25
1
EC11
SW24
32
D
D1, D2, D3, D4, D5, D6, D7, D8 +24
3
10NF
10nF
C1, C2, C5
3
10nF
C3, C4, C6
1
806K
806k
R1
2
2M
R2, R6
2
10K
10k
R3, R4
1
806k
R5
2
10k
R7, R8

Split Keyboard design files

The KiCad project lives in the Ari-Hetti/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 203.5 × 92.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Split Keyboard?

84 components, from 16 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 Ari-Hetti/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?

Yes, under the terms of its MIT license, which Ari-Hetti chose for the repository.

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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