HardLabs

Left Split Keyboard

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

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

About the Left Split Keyboard PCB

Left 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 96.2 × 98 mm, with 37 components from 7 distinct parts.

Its main chip is the XIAO-NRF52840-SMD, from the Nordic nRF family. By type, the board carries 17 switches, 16 diodes, 2 resistors, 1 IC and 1 connector.

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

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

Main components on the Left Split Keyboard

XIAO-NRF52840-SMD

Left Split Keyboard bill of materials (BOM)

37 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO-NRF52840-SMD
XIAO-nRF52840-SMD
U1
1
C2906268
1.0-2P WT
CN1
16
Switch
SW1, SW2, SW3, SW4, SW5, SW6, SW8, SW9 +8
1
EC11
SW7
16
D
D1, D2, D3, D4, D5, D6, D7, D8 +8
1
806K
806k
R1
1
2M
R2

Left 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.

Left Split Keyboard: common questions

What microcontroller does the Left Split Keyboard use?

The Left Split Keyboard is built around the XIAO-NRF52840-SMD, from the Nordic nRF family.

How big is the Left Split Keyboard PCB?

The Left Split Keyboard measures 96.2 × 98 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Left Split Keyboard?

37 components, from 7 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 Left 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 Left 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 Left 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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