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Split keyboard

MohamadAminGhanoum·Split-keyboard·KiCAD&PCB/Split Keyboard.kicad_pcb

Split keyboard PCB layout, top view — open source Nordic nRF board by MohamadAminGhanoum

About the Split keyboard PCB

Split keyboard is an open source Nordic nRF PCB design by MohamadAminGhanoum, published on GitHub. It is a 2-layer board measuring 293.5 × 114.5 mm, with 48 components from 7 distinct parts.

Its main chip is the XIAO-nRF52840-SMD, from the Nordic nRF family. Other key parts include the DM-OLED096-636. By type, the board carries 22 switches, 21 diodes, 2 ICs, 2 resistors and 1 connector.

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

From the project

A custom split keyboard that i want to replace my current old keyboard that i have.

This split keyboard uses Cherry MX Gateron switches, which i chose because i want this amazing sound. It also has rechargable Lithium batteries, which is great because the keyboard does not need to be plugged in the whole time.

Split keyboard, from the project README
From the project README

Main components on the Split keyboard

DM-OLED096-636XIAO-nRF52840-SMD

Split keyboard bill of materials (BOM)

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

QtyPartRefs
1
DM-OLED096-636
U3
1
XIAO-nRF52840-SMD
U4
1
DIP-JST-2P-2.0
J2
1
SW_SPDT
SW22
21
SW_Push
SW26, SW27, SW28, SW29, SW30, SW31, SW32, SW33 +13
21
D
D26, D27, D28, D29, D30, D31, D32, D33 +13
2
4.7K
R2, R4

Split keyboard design files

The KiCad project lives in the MohamadAminGhanoum/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 293.5 × 114.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Split keyboard?

48 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 Split keyboard design files?

From the MohamadAminGhanoum/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 MohamadAminGhanoum. 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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